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How fast are you big block guys running?


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30 replies to this topic

#21 Guest__*

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Posted 24 May 2005 - 06:25 AM

Boy,where did this old thing come from ? Update:Went 8.39 @ 164 MPH Saturday night at Union Grove.Qualified #3 in a 16 car field.Still bench seats and all.We have to weigh the cars after every pass to make sure we're legal,I'm #3720 with driver.That makes me legal by 360lbs.

#22 72 LS5

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Posted 24 May 2005 - 08:35 AM

Went 12.90s with stickies with this mild combo:

454, 9.5 to 1
Oval ports with 2.19 valves
Erson 230 @ 050, .538" lift
HEI, 38 degrees total
Strip Dominator
800 Holley DP
Open Exhaust
2200 convertor
3:31 gears
4000lbs without me

Heart Transplant 07/2011-> Tired 454 yanked and ZZ502 installed

#23 shawn

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Posted 24 May 2005 - 11:44 AM

Quote:
454, 9.5 to 1
Mike, can you run 87 octane by chance? Just curious.

#24 72 LS5

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Posted 24 May 2005 - 02:47 PM

Shawn,

I may be a little conservative, it may be closer to 10:1 cuz I had the 116 cc heads shaved .030".

Anyway, to answer your question, yes I must run premium all the time or it pings.

Heart Transplant 07/2011-> Tired 454 yanked and ZZ502 installed

#25 Guest__*

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Posted 24 May 2005 - 03:24 PM

Just posting some food for thought, cause I know that the question was regarding big block performace. However just to add some fire to the small block - big block war. My 72 monte ran 12.30 at 109 with the following motor setup. Just to let you know this was with only a 2000 stall converter and a bad valve body that I had to shift at 5400 and it would end up freewheeling until it hit 6000rpm. I unhooked the exhaust and ran thorugh the headers on M/T ET Streets. The car has a totally stock suspension with a narrowed 12 bolt and 3:73's. Interior is all stock seats etc. and I did take out the air-cond. and heater core and am running weld drag-lites all the way around. The gas tank was more than 3/4 full and I am a 180 pound dirver so I'm guess that puts my car at right around 3850 or so.

383 SBC
10:1 CR
Edelbrock E-Tec 200 Heads
Edel. RPM Air Gap Intake
Holley 780 Vaccum Sec.
All MSD Ignition
Fordged Bottom End

Turbo 350
2000 Stall
Manual Vavlve body (Sort of) mad

This should renew the rilvary

#26 72 LS5

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Posted 25 May 2005 - 09:26 AM

Sdl72Monte:

Those are impressive numbers indeed. I think that's great, but I also think it can easily be explained. You have to be saving 200lbs alone with a small block with aluminum heads. I think the heads are the most key element in producing power. I didn't see your choice of cam, but it sounds like all the parts are working together for strong midrange power - perfect for a heavy car. So good heads, lighter weight, and less friction with the TH350 plus draglites, no AC all add up to good times at resonable cost.

For me, I think aluminum heads will cut .2 off with just the weight savings (BBC iron heads are HEAVY). laugh

Heart Transplant 07/2011-> Tired 454 yanked and ZZ502 installed

#27 Guest__*

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Posted 28 May 2005 - 09:02 PM

Yes I agree fully. I am just partial to small blocks, well actully just horsepower. LOL. However I like the big block torque numbers I am gettin out of a small block with the weight savings and a resonable cost. FYI my dad runs only big blocks and swears by the adage that there is no sub. to cubic inches. Good luck with your efforts.

Steve

#28 Heckeng

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Posted 12 November 2005 - 05:52 PM

12.75 with. . .

454HO unmodified
Holley 750 vac sec
MSD ignition with 11 deg initial and 36 deg total advance
Th-350 with B&M 2400 stall
3.55 gears with 275-60-R15 (28") tires

this year I changed to an RPM air gap intake, 750 Speed Demon Double Pumper,MSD distributor with 16 deg initial 37 deg total, 502/502 cam (224/234 @ 0.050"), Comp magnum rollers, Head bowl and intake/exhaust porting...

Hope it wasn't wasted effort.

502ci, AFR 265's, Demon 750, Air gap intake, Straub custom cam, TH350, 3800 Edge converter, 3.55 12 bolt.

#29 jrb70454

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Posted 12 November 2005 - 08:11 PM

12.41 @ 110.1...
with a 10.1 .060-over 454, cast iron merlin oval ports, B&M 2400 converter, stock turbo 350 w/B&M shift kit, 3:31 gear, BFG drag radials, cast iron exhaust manifolds, 2.5" Torque Tech exhaust w/h-pipe, 20" dynomax mufflers, "LS6" cam, RPM intake, Holley 800 dp, 6A MSD ignition / MSD distributor. Word to the wise: if you try to run without an air cleaner and have hood insulation, bad things can happen! smile
Life just keeps getting better and better.
Did you ever notice that when you buy aftermarket stuff, you have to buy more aftermarket stuff to make it all work?
70 Monte in the 11s
68 Camaro in the 10s
Fast and quiet is more fun!

#30 Guest__*

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Posted 19 December 2005 - 09:23 PM

Low to mid 10's for mine.

#31 Sam (Bones)

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Posted 20 December 2005 - 05:44 PM

my best is 11.58 w/1.49 60 ft, 114 M.P.H.
BB
Sam


70 & 71 montes




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