496 bbc dyno numbers. The flow looks to pick back up at .

My motor: 9. Vortecpro, how much work has been done to the 049 heads? The AFR 290 heads certainly look good on paper and even better on the dyno. Oct 24, 2018 · I’m questioning the numbers my 555 made on the dyno. At 0. CNC-496-ST1. The car will see 95% of its time on the track (quarter mile) with the occasional couple of mile road trip. of torque at 1,800 rpm and 600 ft. 615/. 250 inches of stroke and 6. 700 lift, intake flow increased 20 cfm and the exhaust increased 18 cfm. Part 1 - VortecPro 650HP 496 Big Block Chevy Dyno / Drag Test Mar 5, 2013 · Finishing things off was an MSD billet distributor and wires, and a set of 2. It was a chassis dyno. Apr 21, 2013 · Its incredible how much power a BBC can make with a set of factory Cast Iron 049 oval port heads. 350 bore not a 4. 731/. 000 to 0. searchin4a66 Discussion starter Aug 6, 2010 · More data or more detailed data is available for those interested in dyno numbers. The Jul 18, 2012 · For our street/strip 496 BBC, Dart supplied a set of its CNC-ported 335 heads. . 650 lift an duration a . I will be using a set of 188 casting rect. Over the course of a three-day test and tune session Hardcore’s Land & Sea engine dynamometer, the 565 laid down more than 500 ft. Jan 7, 2006 · Spent the day at the dyno. We were very pleased. 135" rod length and larger counter weights on the 6. it was a stockish type rebuild at 9-1 compression. 698/. 385 I beam rods, Mahle pistons, 10. Prob go solid roller from jones once i get that far. These three things should bring rpm range down to about 2,300-6,200 according to the Isky tech rep. May 16, 2016 · I wanted to bring the torque curve down a little for street driving. Don't need 7 or 800 horse. -ft. Oct 5, 2009 · I have a 496 going into a 1964 impala. Feb 3, 2015 · Starr collaborated with noted engine builder Andy Jensen of Jensen’s Engine Tech and customer Chuck Marsh to build and tune this 555 cubic inch blown pump gas big block Chevrolet engine, complete with 14-71 Mooneyham supercharger, to achieve that mythical thousand-horse number. 19/1. May 5, 2009 · HERE IS ONE OF OUR "STREET THUNDER" SERIES 496 BBC RUNNING ON THE DYNO. Up top, we now recorded 599 hp at 6,100 rpm, gaining in both output and usable rpm, however, the bump of 12 hp up top shaved 8 lb-ft from peak torque, and shifted the torque peak higher up the rev range. The flow looks to pick back up at . A 496 has to breathe. The flow numbers and dyno results of numerous head tests indicate that the best peak and average outputs are seen when the 0. Details: Mar 2, 2013 · Thanks Nitrous Supply 714 373 1986 I don't have a Chevelle, but I wish I did!! 69 Corvette Stingray 454, 6 speed, 11. 39-. BBC 427 had heads that were from Nov 20, 2007 · Two big blocks, 496 and 505 tested. 427 BBC hyd roller pump gas So my friend just had his 427 BBC on the dyno. 8 compression, 238/248/578/608/109 hyd roller, GM 049 oval port heads, Performer RPM air gap intake, 1000 HP. Keep in mind this is on his DEPAC dyno and I have no idea how this dyno compares to a SuperFlow or any other brand for that matter. best to date= 1. 2:1 CR, CPM ported 781 OEM iron oval port heads and intake, custom solid roller cam. 385" rods, vs the stock 6. 310 bore, which were significantly less than what Bordix claimed. 7-1 alum. Monty Davenport at Mooneyham was responsible for tuning up and re Aug 11, 2006 · The numbers are right where the 540 I recently did that was 10. Oct 5, 2018 · This is a stock build on a 402 BBC with one of my semi customs , . 35/2. 0 compression 37 degrees timing Isky 267/272 - . 250 bore steel shim head gaskets, factory M head bolts, 840 heads Mar 14, 2012 · Look at some of the baddest bbc heads out there. 36 gears, 3700lb raceweight Jul 23, 2015 · This test involved running the stock GM heads then replacing them with the BBX-3 332s from Brodix. Jun 3, 2010 · Adding to the library of dyno numbers. 600 lift. Out of box stock Aug 4, 2010 · Dyno Sheets 496 Iron Head BBC To all that might be interested in some dyno numbers, hand I will have to do these slowly as my server (and I) are speed challenged. Chevrolet 454 Street Torque Recipe Apr 24, 2008 · General Chevelle Tech Area. ran Jul 19, 2014 · Black 69 Chevelle SS cruiser, 468 bbc Silver '72 chevelle street/strip, was a 496 BBC 3:73 gears Best 60' - 1. 5 g-trim housing. We fee this to be the perfect street rod head and cam combination for the popular 496 engine build, and will operate on pump gas with ease. 25-inch dyno headers feeding a set of Borla XR1 race mufflers. Nov 30, 2023 · Ray Best pass 8. i. 76" 0r Jun 7, 2013 · Final dyno numbers came in at 551 horsepower at 5800 rpm and 586 lb-ft of torque at 3600 rpm – results that will plant you right back in the seat when the right foot comes callin’, and not suck your pocket completely dry at the pump, thanks to the measly 87 octane fuel requirement. Normally we run right at 10. had bone stock 049 heads with a fresh valve job. Seems like they gave pretty similar results, maybe I should've went Apr 7, 2022 · Once mounted to Westech's Superflow 902 dyno, the 496 big-block was fitted with a pair of large-tube dyno headers. stuck it in a 78 ,all steel gbody with a small set of headers, 3. 3:1 Our hp numbers would have been higher for certain had we had the compression ratio in the higher zone. Brulé still wasn't completely satisfied though, noting "The cam should have still been able to make power up to Feb 14, 2014 · 427 SBC Dyno numbers, running out of head or cam? 64 Chevelle 496 64 F100 Street Rod with BBC /Chevy trapped in a ford body . Nov 1, 2013 · The numbers I posed were from the Brodix web site of the NON CNC chambered 270 head (the CNC chamber option adds 6 CFM @ . 1 compression with oval. 7-1, Ported Sniper JR, 268 cam, under . 19 intakes and bow blend, 228/238 108 lsa Isky hyd roller, comp 1. The 496 had cnc ported Edelbrock heads, 0. May 6, 2015 · These are huge numbers for any performance BBC head, but especially considering the comparatively small port volumes. We ran 2 489" BBC's, here are the results from mine. 43 but inflated dyno numbers This 496/505 engine only had approx. 4:1 CR), Lunati Voodoo billet 60213 hyd roller, Lunati hyd roller lifters, Scorpion 1. 85 stuff with 2. 11 12 Bolt 3675lbs, 632ci BBC, N/A 1. The combo is 11:1 comp Oct 20, 2016 · After installation of the high-lift XR271HR cam (. TQ goal is ~640-660hp @ 4700-4900 RPM. After a bit of a wait for the heads ATK put my 496 stroker together and today on the dyno. Oct 2, 2008 · This meant gathering a number of different oval-port cylinder heads and putting them through their paces, both on the flow bench and the engine dyno. 88 valves Jan 30, 2010 · Finally we will have the chance to test these heads on a pump gas 496. 0 was with 335's with a little less torque 750/670. 5 to 1 (18cc dome) 489/496 BBC with AFR 305 (CNC port option) cylinder heads combos if anyone is willing to post with some dyno numbers. 676 HP 684 TQ Thanks for a KILLER 496 Mark. The 496/505 will accelerate any heavy car much better than any of the underpowered original GM bbc engines. 82/1. 712HP @6500 Dec 1, 2016 · After the break-in cycles, the tuning session included adjustments to jetting, timing, and even the oil level (very important). 9 stock street, or . The test was run in warm conditions, high 80’s in Houston Texas so humidity was around 70%. BBC 496 Stroker Engine, Dart Block Nov 6, 2013 · John Austin Katy, Texas '70 SS454 Chevelle "clone" project My combo: 496 BBC (454 +. Sold 3/2018 1970 SS 396 restoration project in progress. THIS MOTOR HAS OV Jun 19, 2017 · dyno numbers? Jump to Latest 64 Chevelle 496 64 F100 Street Rod with BBC /Chevy trapped in a ford body . Any way, I am building a 496, planning on 10. Those numbers are from the tires. 631hp at 5800 and 637torque at 4100. The cam is yet to be determined, but will probably be in the the high 250s @ . 1972 Datsun 240Z 496 BBC Pump Gas-ish the same dyno and just move the mark dont pay much attn to the numbers Aug 23, 2010 · We transform a rather bland Chevy 454 block into a mean 496 big block using an Eagle stroker kit, Edelbrock dual-plane intake, COMP cams, lifters and rockers, and more - Popular Hot Rodding Magazine Jan 2, 2013 · After a bit of a wait for the heads ATK put my 496 stroker together and today on the dyno. 385" combo make the whole deal easier to clearance and balance,Ive always preferred a tall deck 427 block over a production 454 block, the problem is both in initial cost and transporting it once you find one and have it purchased in most cases, if your Feb 15, 2011 · I'm officially starting my build thread for my next BBC. With our tuning finally dialed in, the ProMaxx BBC heads demonstrated their worth on the 572 stroker by producing peak numbers of 850 hp at 6,800 rpm and 719 lb-ft of torque at 5,500 rpm. 655 Jun 20, 2023 · They did a dyno test some OEM square port open chamber heads the best 1971 had to offer versus some simple cast iron Summit BBC heads nothing special out the box on both. Off-Road Staff Writer Jun 24, 2003. 711 net lift 112 sep, Isky Red Zone lifters T&D shaft rockers Dec 20, 2016 · On the dyno, the Victor Jr. @ 5100 Tremec TKO 600 Strange S60 W/ 4. Show more replies. big block GM style stroker crate engine - longblock. Though flow numbers are only an indicator of the power potential, it is always nice to correlate the airflow data with the changes in power. Recommended Stall Converter: 2000-2400 rpm Apr 23, 2021 · Westech Dyno Tested a 496-Inch solid-roller big-block Chevy that was built to run on pump gas on the street as well as the strip. we put together a 454 years ago. 715/108, GM 781 heads, Victor Jr intake, 1000 CFM AED/Pro Systems 4150 carb, 1 inch open spacer, Milodon oil pan, LAT oil, tested on VP C-12. Jan 7, 2016 · A few weeks ago I had a couple of BBC's on the dyno and tested a set of 1966 Corvette manifolds with 2. 540 BBC + 15psi Boost via Single Garrett GTX Mufflers are probably contributing some to the low numbers Mar 16, 2009 · Here are the numbers: Clb-ft CHp 5900 442 496 6000 437 499 The motor liked a one inch open spacer. , Possible Brodix RR or Canfields. Bought 5/2018 May 13, 2010 · AFR 290 /496 Hyd Roller Dyno test Jump to Latest 56K views 126 replies 53 participants last post by wildman926 May 19, 2010 496 BBC with CPM ported 781 iron port heads and intake. 50 is 272 or 282 ill have to check that again. -AFR 335 cnc heads. Not too shabby for a set of poor little 265cc oval heads RIGHT OUT OF THE BOX, ABSOLUTELY NO EXTRA WORK. 42 Posi, SEE DYNO VIDEO https: Jul 28, 2010 · Here is the Dyno Data and a pic on the AFR Oval Port heads on a 496 BBC. Tq peaked at the same rpm, hp you were 200 rpm above me . Jan 3, 2012 · 496 BBC Dyno results. Thought we were going to talk about the dyno numbers, but if it shifts to bumpsticks Jan 27, 2011 · I can answer some of your questions. This is the winner. 15-50 or 20-50 Jul 25, 2005 · AFR 315, Vic Jr, 1"spacer 850 Demon, Comp roller 254/260- . We also tightened the lash on the intake valves from 0. Over 500 ft lbs from 2900. The intake relatively the same size and the intake flow (like 320 or 330 cfm) on the Summit head was similar but better in lower lift by a little. Apr 4, 2021 · "505 BBC. head part number, etc. 7 comp pro magnum rockers Dart 4500 single plane oval port intake 1050 dominator Head flow BBC Open Chamber Large Oval Port #049 Feb 21, 2011 · A good dyno operator ought to be able to do it for you. May 12, 2014 · my friend ask me to post my build and dyno results on here so here we go. Pump Gas Results: With a single plane intake and special custom grind cam (575 lift), these heads produced 762 HP on a pump gas 572 engine with 10. HP goal is ~740-760hp @ 6800-7100 RPM. 91 Best mph 132 All Motor. Includes 30 month / 50,000 warranty & BPE Dyno Promise. 1 hp. 76 comp, comp 248/253 110, 106 solid roller, scorpion rocker arms, Scat 4340 crank, 6. 10's 9" tire. Eric posted his first set of numbers of the 270 head using a 4. Look at this combo and tell me what ya think or if something could be changed or improved. 87 @ 124 mph (full street trim) all motor, only trip to the track Those are both combos I have ran through my engine program but were coming up way short of your actual dyno numbers. Mar 8, 2021 · Really good morning when you can show up at 8:00, do your business, and be off the dyno by noon. of torque. 578/. Have had 3 BBC guys with 496's tell me to keep it at least 50. 760 stroke std, 4. This will be an on going thread showing progression from beginning to end results on the engine dyno. 1 pro race)}/33,000 Not exact but usually pretty damn close to corrected dyno numbers. Under 10 to 1 compression, dual plane intake and the venerable Holley 4150. 5-1 496/AFR 305's/Voodoo 60234 Solid Roller/TH400 4000 Stall/4. 25-inch dyno headers, and the Dooley wet-sump pan was filled with Lucas oil in preparation to run. The engine is going into a 1969 non- tubbed Chevelle with the goal of getting the car to run in the low to mid 10 second range. 921 150. 331 60' & 6. 300/1. 7psi)x(stroke inches/12 inches)x(cam power peak RPM/2)x(number of cylinders)x("choose one factor" . 8 comp ratio. Oct 13, 2006 · -468 BBC-steel GM crank 4700 555. May 10, 2008 · 496 BBC-617 HP @ 6100 587 ft/lbs. The 4150 is a 750-cfm, double pumper (two accelerator pumps) with mechanical secondaries. 134 bore, Speedpro L78 pistons, sealed power moly rings, resized 3/8 dimple rods, factory L78 oil pump, factory oil pan, factory GM card board tube L78 L72 cam, installed @ 108, isky lifters, factory pushrods, factory rocker arms. Blueprint Big Block Chevy Engines are a great choice for drivable and reliable high-performance engines. Mar 31, 2010 · Crankshaft HP = {(bore area, inches^2)x(Static Comp Ratio x 14. 600 according to Brodix). roller or solid flat, for the 496. Part #: BP49611CT Feb 25, 2016 · The peak power numbers don’t tell the whole story. , 4:11 posi. Victor Jr. 060), Muncie 4 spd, Centerforce dual fric clutch, "781" heads 2. 250 bore steel shim head gaskets, factory M head bolts, 840 heads Jan 21, 2007 · Dyno FlogTest 1 was run with two steps leaner jets than stock in the Demon 850 carburetor with timing set at 34 degrees total. Using a cheap Gen-V 454 core from the junkyard, we built a Multi-Purpose 496 stroker. May 1, 2024 · These are huge numbers for any performance BBC head, but especially considering the comparatively small port volumes. Aug 2, 2022 · The 1932 Ford pickup features a 496 cubic inch big block Chevy engine, which is essentially the truck’s entire front end. AFR's 335cc BBC Enforcer Cylinder heads feature our Permanent Mold “As-Cast” Technology surfaces on the intake runners, exhaust runners and combustion chambers that allows for extremely accurate and repeatable port location/performance. 496 BBC 3:73 gears Best 60' - 1. I agree a 950 HP is a 750 HP with a bigger base plate, I did flow his carb and I believe it was in the 830 CFM range. 060-over 454 equipped with a forged crank and forged rods from Procomp Electronics matched to a set of forged pistons from Probe Racing. Jun 28, 2014 · CPMotorworks of Janesville, Wi built 496 BBC. This is going to be a 496" pump gas BBC. 2 -10. 1 496. 700 Anyhow, the heads are being fitted to a 496 as I type. Feb 15, 2011 · I'm officially starting my build thread for my next BBC. To recap, Mark built me a 9. Jun 16, 2017 · this is the first dyno pull on a new 496 Big block going in my 1972 Nova. Blueprint Engines are dyno tested and include dyno sheets. I think for your application the 325+cc would be a bit lazy with the 10. “It weighs almost 2,900 lbs. You gotta get it in first before you get it out. Sep 17, 2008 · the 496 BBC is basically the BBC 454 version of the 350 SBC, being stroked to 383, in a SBC, you bore the block . After reviewing the results, the 496ci gained torque and horsepower. 4k lbs prob. 7 rockers, airgap, Holley 850, 2" headers and 3" pipes. Jul 20, 2012 · Oh, and for any of those that might suggest that he has a "happy" Dyno, Harold Bettes (retired from Superflow) was there and calibrated the Dyno, so these are real numbers-I would show you a video, but trying to post pictures or video on this site is impossible- Sep 1, 2009 · Patriot’s Freedom Series heads meet the demands of the BBC world, while keeping the quality high and the price reasonable. The 454 definitely benefited from the high-lift cam, but a close look at the dyno curves (see graph) reveals that the low-lift cam actually offered (slightly) more Jun 3, 2023 · I give real dyno numbers comparing Promaxx 317cc BBC heads to AFR Enforcer BBC heads. Jul 30, 2009 · “Old school” solid FT 427 BBC vs. Mar 24, 2006 · Building a new 496, after all the plans for changing cams, etc in the 468, I sold it. First up is the pic of the engine. This budget friendly head is perfect for your 509 to 540 Cubic Inch operating below 6500 RPM. Although you might see better flow numbers, it certainly won’t be with intake ports that are smaller than 305 cc. 2:1 COMPRESSION, STRAUB CUSTOM CAM, 850 QUICKFUEL CARB and an AIR GAP INTAKE. Thanks -13. 98 1. Jan 20, 2021 · It is built for cruising and brute acceleration for the freeway and open road. “It’s for cruising…” Jeff confirms. Chevy High Performance used these to build their 675 hp 496. The combo is MARK IV 496 BBC, AFR 290 HEADS ,10. 700 lift, 1050 QF carb 743@5300 and 851@7300 "Don't forget a 505 is just a 496 that use a 4. Performance Dec 27, 2010 · Anyone running edelbrocks BBC roller cam #2261 and the retro lifters #97443. IVE built at least a dozen 489-496 bbc strokers and the longer 6. But my ? Is should I run single or dual plane intake? May 2, 2012 · The Ultimate budget build!!Ford makes it, Chevy shakes it86 Coupe S/S, BBC Powered 10 to1 489ci very mild. 310 bore X 4. 5:1 short block. With big valves, ported masterfully by hand. 4 to compression with fully forged internals. Before installation of the 8-71 blower, we made sure to run the 496 BBC in naturally aspirated trim to establish a baseline. You should ask your guy to verify Dec 1, 2003 · This 496 cid stroker rat engine pulls 700 hp and over 640 ft lb of torque was built by Hye Tech Performance with off the shelf parts-Super Chevy Magazine expectations can easily go awry in Jan 1, 2009 · We build a good powered and excellent street mannered 469 Chevy big block from a 454 Chevy block and top it off with a stroker kit from Eagle - Super Chevy Magazine Mar 28, 2020 · 505 dyno pull - ProFlo 4 readout what size injectors and what were the HP/TQ numbers? 64 Chevelle 496 64 F100 Street Rod with BBC /Chevy trapped in a ford body . 030 and stroke the standard 350 from 3. Thanks, Bill Mar 4, 2016 · Planning a 496 build. The engine was a 496. at 3,000 rpm. 666-111 sep, Isky Red Zones, 9. On the dyno, the peak numbers rose to 783 ft-lbs and 825 hp. 80 compression, 2" dyno headers 670HP@ 6300 @ 610ft lbs @ about 45-4600. Mar 2, 2020 · FULL DYNO RESULTS on this POWER ADDER BBC Stroker. Head companys fudge with those numbers just to sell product. I was a little disappointed in the results as I expected about 25-30 more HP and torque. 0 506. First up, we needed a suitable test motor. That is one awesome 496!! 489 BBC 620hp/620tq w/ AFR Jun 24, 2003 · Dyno-Tuning the 496. 705 HP in the car going down the track (138 MPH @ 3500 lbs) Combo 468 13:1 AFR 305’s. Specifications: . 060 over 289 casting block, 10. If I were you I would try to seek a pro to help guide you on the build. 591/. 315cc FloTec heads. Aug 23, 2013 · The day has finally come. This engine has the OEM Iron 390HP 427 Holley intake, 781 heads with minor work, only 9. 3. . 25 stroke 6. Port GM castings that have a good valve job and that's about it. Should have dyno results hopefully next month. 72 Chevelle. 500-. BB Chevy 496 Stroker Crate Engine - 550+ Horsepower. The build: 396 (out of my 69 longhorn) . 734 lift 1. " 69 Jul 4, 2022 · I have not gotten it on the Chassis dyno yet to brag about numbers, but it DOES pull past 6000 RPM rather quickly, and it DOES NOT fall on it's face and hit a wall at 5000 RPM. Jan 9, 2011 · 468 bbc 174 B&M Blower Dyno numbers. Dyno was Superflow 902. 36 Best 1/4 et - 9. Car will be street strip an has a muncie m22 tranny an ford 9" with 4. 663 IN . The combo is 468 ci, 9. com, the official website for Chevy High Performance Magazine. 1 lb-ft of torque at 687. Motor info is 496 will be around 11. Was wondering if any of you guys are using this cam in a 489, 496 or have used it in the past. I think its important to note if the car is going to run at the track you have to consider how the engine carries power past peak HP, very important for track performance. Should be able to lay both of our graphs on top of each other and it look like the same dyno run. Like. 385 rod SRP Pistons 11. Molnar forged crank, and forged Molnar H beam Rods. Dec 26, 2011 · I couldn't get the sheet with the BSFC numbers to scan right for some reason but they started at . The result is a mill that makes a ton of torque all Nov 11, 2010 · KC asked me to post the results for his pump gas 496 with the AFR 265cc CNC chamber heads, Chris Straub hybrid solid roller, Victor Jr & Pro Systems SV1. i am building a low buck 496 build and have bought some 781 heads. Mark Jones built me an outstanding example of just such an engine. great numbers :thumbsup: VortecPro 496" T400, Tight 10" converter Nov 6, 2012 · 283 dyno numbers. Dec 29, 2020 · there are tons of sound clips of these cams online. 2:1 compression ratio and 736 HP on a pump gas 555 engine with 10. But not sure good to put $2000 or more in the 781 to get new valves and some porting done. Another guy (Walt on ttf) has a TV8101 mounted this way on his bbc in his 70 Chevelle street car, Ive got a bbc and an 88mm S400(got it from Dave) in my Nova mounted this way and its a street car too. calies crank,scat rods,20cc dome pistons, new combo parts list is. This is with 2" headers & you know how my dyno is with regards to "stingy",,, 540 pump gas street engine with AFR 335's 10. Seems to have been a glitch of some sort and I'm not sure if it were the heads or his bench. Scat internals. 200 flow numbers are high, and the reason seems to be the short rod/stroke ratio. I tested a ton and moved some of my parts around to see what configuration made the most power. ,” Fisher told us. dart pro 1 275 oval ports worked over by slick rick racing heads,straub custom grind hydraulic roller cam 261/265 @50. I do have solid lifters in my combo and a port matched Vic Jr. 2:1 compression, dynoed on 91 octane BP gas, July of 2014. 650/. 496 bbc w/eagle rotating assembly Lightly Ported 781 oval port heads with 2. Nov 23, 2015 · 1969 Chevelle 540 BBC 746 HP 692 TQ Straub Hyd Roller VortecPro 496, Hughes TH400, ATI converter, GM 12 Bolt, 3. put up the best numbers yet with the Brodix as-cast cylinder heads, punching out 684. The heads are now used in all our 496/505, 540/555, and 572 BBC engines, delivering amazing dyno results. Last Friday we dyno'd the 496 with AFR 315cc, custom CSTRAUB cam, and the good old 10. 212 60'. 5 cr 063 closed chamber oval port heads, 2. to Weiand Track Warrior Intake Brodix Nov 28, 2020 · Mark the dyno operator said as he put the engine on the dyno "a 496 like this makes about 630 HP" they made 3 pulls with zero changes from my shop. 59 8. BluePrint Engines 496 c. The engine build will be based off a production block, sporting a Scat rotating assembly with a 10. 053 @ 112mph 1/8th, Has been 9. 050 108 LSA installed at 104 (same cam) Victor Jr. On JGM’s dyno, the 454 made 410 horsepower and 545 lbs. 68 to 1 Comp solid roller 263 @ . 673 121. 266 5. 880 valves, 13. Before heading to the dyno, we took the liberty of comparing the two sets of heads on the flow bench. Supercharged Comparison Testing. Mar 7, 2015 · Thought I'd share my 496 build, 959 block, Scat 4340 crank, Scat 6. The exhaust note from this big block engine is much deeper than that of the typical stock GM big block engines. Pump gas. We started swinging for the fences by running 110 race fuel. May 21, 2010 · The new AFR 290 CNC ported head was tested on the 496 today. 610 lift split and wider 112-degree lsa), the peak numbers rose to 446 hp at 5,300 rpm and 511 lb-ft of torque at 3,700 rpm. 0 I would like to see numbers off of another dyno. Aug 29, 2017 · While a 496 is a common displacement, ProCharged 496-inch big-block dyno test 1,144 hp! we were rewarded with peak numbers of 677 hp at 6,400 rpm and 591 lb-ft of torque at 5,300 rpm. Tags dyno results. After a little over a dozen pulls, we stopped at 737hp/639tq :hurray: with a very flat torque curve. 670, remember this has to drive on the street. I'm building a 496 or 511ci street strip motor for my 70 SS and would like some feedback on street manners, its got big numbers for a street driven cam but i want the performance side, and have always liked edelbrock stuff, i currently have the rpm flat tappet and i'm very happy with it. 2. 030 over rebuilder cast pistons, the ones with the funny looking little domes, 148 head castings, I think I put a 2. 42 at the beginning of the pull, dropped to . Sep 30, 2015 · Thought some might be interested in this build: factory 1969 L78 396 375HP. chevyhiperformance. Maybe even a Aug 3, 2017 · I tested both the customers QFT 850 VS and QFT 1050 AN with 1” open spacer, 35° total timing on BP 93 octane with 10% Ethanol, 2” x 3. Mar 4, 2012 · Building 496 BBC Working on restoration! My Daily Drivers: I'll have chassis dyno numbers in another week or so and 1/4 mile slips in late April! 70 Chevelle Mar 1, 2008 · Check out this 496 Chevy Big Block Engine get tested with Edelbrock Performer RPM Cylinder Heads and Dart Cylinder Heads other cylinder heads are TFS, Brodix, GM and Pushrod, Featured in Car Craft Jan 28, 2023 · Looking for thoughts on my 496's recent dyno session. The total timing was 35 degrees. Jump to Latest Nice dyno numbers for such a mild build. Same GM short block with all the goods. 48" to 3. 88, 12-bolt 3. As of now it will be 10. May 27, 2016 · Just got the new 468 tuned up on the dyno. 578 221/235 on a 109. Jump to Latest *65 Elky, Gen VI 496 BBC, TH400 *59 Vette, 283/270 hp. 10's but inflated dyno numbers make it tough for honest engine builders to compete. I got a set of stock 781s. Idled about 850, don't remember the vacuum This was on a dyno considered pretty conservative,,, Mine May 3, 2021 · On Westech's Superflow 902 dyno, the blown and injected big-block Chevy was fitted with a set of 2. 5 more compression, a significantly larger camshaft of the same type (solid roller), a larger carburetor, the same manifold I believe, and made slightly less horsepower and significantly less torque across the board than the 505 with out of the box Patriot heads. 73 rear, and a b&m 10" converter. Here are a few good reasons why we think the 496/505 engine is a better choice than the stock GM bbc engine. He later stated the heads were NON CNC chambered. Part #: BP4967CT Aug 17, 2006 · It is advertised from them at 500 HP and word from the owner (Gail Trent) is that an avergae one makes 505 a "good" one makes 508, and occasionally a few come in right at 500-502 HP. Custom solid roller cam, 10. 0 mild race, or 1. THIS COMBINATION MAKES 700HP @6300 RPMS AND 653 FT/LBS @ 4800 RPMS. 5 compression, 049 heads, big valves, etc. Patriot’s BBC heads come as cast with a 320cc intake runner, US made bronze guides, and a 5 angle valve job. air like the east coast and a small BBC not a lot of dyno Apr 5, 2015 · I am starting a 496 BBC build and would like some idea on cam selection. Wondering if anyone used any promaxx 317 yet. 50 on the intake and exhaust . 050 with a net valve lift around . 1:1 compression ratio. 11 posi. Kindly note the oddball pan which is for fitment into an early Chev. 5" headers on a mild 496ci build. 73 Eaton posi, Scat forged rot assm (21cc Wiseco slugs for 10. 95 performance street, or 1. 0 Jun 12, 2010 · The only thing I can say blasttime is flow numbers and dyno numbers are all from a tool, one that can be manipulated. It made 728@5600, but it peaked at 808@6600. (For street Nov 20, 2009 · Owens has the reputation of the accurate dyno in town and their numbers ALWAYS are backed up at the local racetrack which is Houston Raceway Park. I think you may have made a mistake already. HP 1000 with 1" spacer 2” headers GZ Motorsports vacuum pump Below are the peak HP and torque numbers from the day of testing. May 6, 2012 · i read a car craft article where they were doing an aftermarket five head comparission on a 496 bbc and used a stock set of peanut port iron heads for comparrission. the stock peanut port still made over 500 hp and was about 50hp off the aftermarket aluminum heads. This dyno test was done for the customer by another shop separate from mine, although I also dyno tested it in my shop. Same engine same dyno same day. HP goal is ~740-760hp @ 6800-7100 RPM TQ goal is ~640-660hp @ 4700-4900 RPM Details: - 1976 2-bolt main block. 016 inch to 0. BBC 2 bolt Probe forged pistons . Throats sized and SSR polished, 2. 87 at 150. 75" on the BBC you bore the 427 BBC or 454 BBC block . 738/. This is the same dyno that my motor was on this spring. Pretty much Owens is THE dyno to use for ACCURATE numbers. performer rpm intake and stock 800 holley dp. NA vs. Only at www. 90's In the quarter but have not run the quarter since figuring out some issues, Car & motor built by me, Build cost of entire car Just under Apr 14, 2011 · Re: build sheet for 468 or 496 bbc that works i have a budget drag motor 468--12. The build will go in a 3600ish lbs (with driver) street car and see both street and strip use. Save Share. 7 final compression ratio, Comp solid roller 268/278/. 7 4800 554. Kjett was pretty close with his 720HP guess. 496 Short block features Molnar Technologies forged crank, h-beam rods with ARP2000 rod bolts, Straub Technologies custom hyd roller camshaft 258/260 @ . Port aluminum head solid roller isky cam . To do so, we installed an Edelbrock 454R intake, Holley 950 HP carburetor and MSD ignition. I really thought It would come in higher than it did. Jul 28, 2013 · You might even want to invest in a good performance shop to dyno tune it. The goal was 630 and they hit it. I will post the results in this thread. 620 flat tapped cam,(Procomp heads)850 alky carb, Powerglide, 4. 91 Mar 10, 2009 · I have been slowing putting together a 496 and finally set it in the car tonight. 85:1 compression ratio. but not many dyno results or cars that have 1/4 mile times. 200-inch-lift flow figures. 385 I beam rods, Milodon 66 chevelle oil pan, M77 oil pump blue spring, ported RPM air gap intake, holley HP1000 carb, open 1 inch plastic spacer, 2 inch hooker headers, 3 inch magna flow mufflers my official Race Week mill is ready. I will admit that with bigger heads that flow more and a larger cam, possibly solid roller, I could easily have a 700-800 HP motor which some members on here have. Timing was set at 37 degrees and we ran the engine Dec 29, 2015 · Run with the Dart tunnel ram and Ultra Dominator carburetors, the 540 BBC produced peak numbers of 806 hp at 6,700 rpm and 694 lbs/ft at 5,500 rpm. 5” dyno headers. What’s more, it will turn these numbers all day long on pump gas. 1. 070 . We were pretty happy with how it ran, we made 44 dyno pulls and it ran flawlessly the entire time. The result is a mill that makes over 800 lb-ft of torque all across the rpm band and Jul 12, 2011 · Great numbers man, I know how it feels, great job Chris. May 24, 2021 · Westech Dyno Tested a 496-Inch Big-Block Chevy that made over 1,000 HP with a Roots 8-71 blower and e85 fuel. MAHLE PowerPak 18cc Dome pistons. 40 through the middle, climbed to . Better money spent to go Mar 12, 2016 · vortecpro wrote:496 9. big block GM style power adder ready stroker crate engine - longblock. But remember, big-blocks are starved for air, so any increase in flow is valuable. 4 519. We decided on a 0. T5 5 spd. Pretty interesting day to say the least. Feb 11, 2014 · The dyno numbers showed a textbook example of what is gained and what is lost as the cam timing is increased. 050, mid 600 lift, Autotec forged pistons Session specific Jan 18, 2016 · If that is the questions. 88 valves 750 holley Edl Air Gap hydraulic roller cam from cstraub, 242/254; . 629 EX and springs to match,new roller lifters off the shelf 854-S, a Nov 1, 2018 · With 496 ci of displacement on hand coupled with 4. 6:1 CR, and a small Howards HR that makes 14" vac @ 850 rpm. 8-1 comp, mild HYD roller 496", RPM air gap and 850 DP holley. 2 4900 556. Bogie Nov 17, 2016 · Of course what immediately jumps out were the intake port numbers at the . 310 bore. *Harley - 06 Street Bob *Life Member - Team Chevelle Although helpful, it is more meaningful to consider high-lift flow in conjunction with the 0. pro comp heads -700 lift solid roller 710hp 663tq--does well but the pro comps dont breath enough for racing but i think budget street motor 1000 for the heads flat tops would leave enough money for street roller and give descent numbers- a 496 10-1 with Sep 29, 2015 · Thought some might be interested in this build: factory 1969 L78 396 375HP. -lbs. 060 and stroke it an additional 1/4 or 1/2 inch from the stock 427s 3. 7 #SCP1014 roller rockers, Edelbrock Performer RPM, Holly 850 Dbl Pmpr (1" spa Nov 16, 2006 · This week I was able to tune my new 496 on an engine dyno. 42 by 5500 and then climbed to . they pull great numbers. 5" x 36" head pipes vs 2" x 3. Oct 2, 2010 · I did not dyno test the engine previously but it showed approx. It’s an interesting comparison. Before running the Weiand supercharger, we took the liberty of running the 496 in normally aspirated trim to establish a baseline. 4. 64 Chevelle 496 64 F100 Street Rod with BBC /Chevy trapped in a ford body . 400 stuff. It did all of this at well under 6,000 rpm. def like that low end torq-i built a 496 with an F1A, milder hyd flat blower cam, hoping for good low end torq, only running Nov 26, 2007 · 10. Jan 1, 2008 · Check out our 496 Big Block Chevy Stroker engine build with 585 Lb-Ft & 672 Hp. Jan 1, 2008 · I am currently building a 496 bbc. All rotating assemblies are balanced within 2 grams on a computerized balancer. Dec 2, 2012 · Still looking for 10. Despite the pickup truck being relatively small compared to many of those on the road today, owner Mark Fisher pointed out that it actually isn’t super lightweight. Feb 14, 2020 · I was fortunate to swap intakes and carbs while on a dyno recently. 47 by the end of the pull. The car will weigh in the neighborhood of 3700 pounds with me in it. 108 lobe sep. on the 781's im gonna be working onif i can get the csa big enoughim gonna put a 2. Best of all they feature a 30 month/50,000 mile warranty. 385-inch-long rods for generous dwell time are the bones necessary to make a classic Chevelle, Camaro, or Nova rock. The carb features Order Big Block Chevy 496 Pump Gas Crate Engine Part Number. 190 intake valve in there, 1. If so, what kind of hp/tq did your motor make on dyno and what heads did you use Jun 8, 2022 · Hey guys, Recently built a 496 stroker and had it placed on the engine dyno! The details: 289 - 2 bolt block. 738 269/276 @ . 720 exhuast, no porting. Jul 16, 2022 · mistakes were made! do i need good cylinder heads when i run boost? does more head flow equal more power? what heads should i use on my blown 496? does a boo Feb 4, 2010 · You could fit a huge single mounted crossways in a Chevelle in front of the engine, like a PT106 with 1. 300 intake valve in it. Engine idles at 950rpm with 11-12” of vacuum. Have been running a solid roller in old engine but I have been thinking about a Hyd. 9. Jul 9, 2011 · 496 Big block dyno numbers and converter issues. 0:1 555 bbc, Dart block, Scat crank, Manley rods, Wiseco forged pistons. 91 octane, 10. As the dyno operator pulled the engine off the RM dyno, he said "this makes more power than our pump gas 540" 717 HP @ RM. 45-. With flow numbers that reached nearly 400 cfm, the Dart Pro 1s were another set of 800-hp heads in search of a motor. Sep 27, 2008 · The engine was tested with 2 1/8 dyno headers and had 30* of timing Dr J's Pump Gas 496 4. Feb 1, 2010 · Dyno Test 3. )THumbsUp . 7 compression ratio. 125 dome VortecPro 496" T400, Tight 10" converter 3. Dec 27, 2009 · Saturday we dyno tested a 396 I built about ten years ago. 7:1, 781 heads w/2. Measured peak to peak, the Dart tunnel ram improved the power output by 29 hp and 13 lbs/ft of torque, but the gains were as high as 51 hp at 7,000 rpm. qbkiwk ibe kugysf sqzw dgrisyq zxh sjdnzulg toy lbiu hnl