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Old 05-11-2011, 08:28 PM   #1
Blue Rat
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What do you think it will run?

1971 chevrolet SWB (3800 lbs) 325-50-15's
4.10's with 3500 to 4000 converter
350 TH built
BBC 433 (Balanced)
049's 2.19/1.88's Gasket matched with intake (Hurricane 3000-7500)
Solid roller 264/272 @.050 .680/.683 lift Matching componets (2800-7000)
10.6 CR
2 " tubes with 3.5 collectors
MSD system componets.

I know alot rides on the suspension. That will be worked too. I am just looking for you thoughts.

Last edited by Blue Rat; 05-12-2011 at 07:47 PM.
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Old 05-11-2011, 09:31 PM   #2
kpeztruck
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Re: What do you think it will run?

If your engine has good forged components, it will love the bottle. We have found that we run faster with lower compression than is traditional for a nitrous engine. On engine only, I would guess low 12's. Paul Baxter
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Old 05-12-2011, 10:58 AM   #3
99-LS1-SS
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Re: What do you think it will run?

I'm going to be a hair more optimistic than kpeztruck and say you might hit mid 11's. It really depends on traction, air quality and how well your setup works together. Have you had it dyno'd?
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Old 05-12-2011, 12:06 PM   #4
69trk
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Re: What do you think it will run?

doesn't sound to much different than mine.
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Old 05-12-2011, 12:29 PM   #5
swb85
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Re: What do you think it will run?

Reverse split cam huh? Any particular reason?

I'd say if you get some decent air, it should mph in the 114-116 range. I'd say in a big truck that's good for high elevens if you can sixty foot the thing. Bottom 12s for sure though.
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'85 Silverado swb: 383 stroker, 10.5:1, vortec heads, 232/238 roller cam, RPM air gap, performer 750 carb, stainless longtubes, 3" duals/super 44's, T56/4.11 383ci build / exterior refresh thread
'98 Camaro z28: 370ci twin turbo 370ci build
'01 Tahoe LT 4x4: 5.3, longtubes/ory, magnaflow duals, custom tune....wife's DD
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Old 05-12-2011, 07:17 PM   #6
Blue Rat
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Re: What do you think it will run?

[QUOTE=swb85;4676354]Reverse split cam huh? Any particular reason?/QUOTE]


Let me get the cam spec card out an get the info from the card.
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Old 05-12-2011, 07:42 PM   #7
Blue Rat
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Re: What do you think it will run?

It is not together right now. But, do have all the major parts. The heads will be done in the next couple weeks. The pockets in the heads are being worked a little. The block is done. All I have to do is get it balanced an start putting it together. Forged pistons, Callies rods an GM forged steel crank. Engine should be together in about month an half. Here is the cam specs. Thanks for the comments. I had a chevelle with a little less engine than what this is an of course it was lighter it ran 11.60's. I am trying to at least match that time with this combo. I will keep making changes till I get it where I think it is doing its best it is going to do.

264 @ .050 .680
272 @ .050 .683 EXH.
4/7 swap.

I am considering Nitrous but I do not know anything about tuning it. Any directions from someone that runs it would be appreciated. You can pm me or lead me in a good direction.

Last edited by Blue Rat; 05-12-2011 at 07:54 PM.
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Old 05-12-2011, 10:23 PM   #8
swb85
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Re: What do you think it will run?

Ah, much more logical cam choice. That motor would love some spray, but decide on it soon because you'll need to gap your rings accordingly. If you want to learn nitrous, learn to read spark plugs. Once you're comfy reading them, tuning nitrous is easy. If you decide to go that route I'd be happy to get ya on the right path.....my camaro is bottle fed.
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'85 Silverado swb: 383 stroker, 10.5:1, vortec heads, 232/238 roller cam, RPM air gap, performer 750 carb, stainless longtubes, 3" duals/super 44's, T56/4.11 383ci build / exterior refresh thread
'98 Camaro z28: 370ci twin turbo 370ci build
'01 Tahoe LT 4x4: 5.3, longtubes/ory, magnaflow duals, custom tune....wife's DD

Last edited by swb85; 05-12-2011 at 10:25 PM.
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