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LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Critique this setup for me

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Old Jan 21, 2011 | 12:43 PM
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Default Critique this setup for me
For upgrade in the spring, I'm planning the following:
(94 formula A4)

AI 190cc heads w/ 54cc chambers
Stock rotating assembly
Comp 280XFI cam, with 1.55 Scorpion rockers (SCP1007BL)
gives 230-236 duration (will have a slight shave on duration due to decreased lift, lift on 1.55s will be .558/.552)
3.73 gears for 2-series carrier
Circle-D 245mm 3200 stall
Moroso CAI (already done)
True duals- Pacesetter 2239s, X pipe 3" > 2.5" dumped Flowtech Afterburners before the axle (already done)
Stock TB
Stock intake
SVO 30#
255 pump/ upgraded harness
PCMforless tune

Looking to make my power between 2200 & 6300. Mostly looking for feedback of the cam/ rockers choice.

Thanks-
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Old Jan 21, 2011 | 01:14 PM
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i ran 1.52 RR's till i could afford the 1.6's. you'll want the extra lift. it all around ran better with the 1.6's
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Old Jan 21, 2011 | 01:16 PM
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Originally Posted by joshh123
i ran 1.52 RR's till i could afford the 1.6's. you'll want the extra lift. it all around ran better with the 1.6's
What cam/ heads? What was your setup like?
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Old Jan 21, 2011 | 01:19 PM
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I see your running a 3"-2.5" exhaust but using the stock TB...These cars love to breath which equates to more power..That's the only problem I see in your set up the TB.
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Old Jan 21, 2011 | 01:25 PM
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Slightly crisper throttle response, perhaps, but the stock 48mm TB doesn't become a restriction until somewhere around 500HP, IIRC...
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Old Jan 21, 2011 | 01:35 PM
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Originally Posted by Gojira94
Slightly crisper throttle response, perhaps, but the stock 48mm TB doesn't become a restriction until somewhere around 500HP, IIRC...
That's true but most of AI's stuff make between 420-430RWHP which right around the 500HP in the motor...some people say it's 17 to 20% drive train loss...I'm just saying..take my advice with a grain of salt. .
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Old Jan 21, 2011 | 01:57 PM
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Originally Posted by jlpz
That's true but most of AI's stuff make between 420-430RWHP which right around the 500HP in the motor...some people say it's 17 to 20% drive train loss...I'm just saying..take my advice with a grain of salt. .
Sure, I got you. Stock bore, stroke so I'd think probably more like 390-405 at the wheels, more like 480 at the crank. TPIS has a nice 52mm for around $200.00, so no big deal to change that if it seems to be a restriction down the road. Easier than changing my mind about a cam.
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Old Jan 21, 2011 | 01:58 PM
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Id ditch the cam and the rockers. I'd go with whatever AI would recommend you. That would get you the most power, with what you have.
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Old Jan 21, 2011 | 02:22 PM
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Originally Posted by flyinZ
Id ditch the cam and the rockers. I'd go with whatever AI would recommend you. That would get you the most power, with what you have.
Thanks- I've seen that AI advises against excessive lift, as their heads are efficient enough they don't require a lot. I recently heard them raise eybrows at .575-.570 for a 220s-230s cam. 1.5s would give me .540/.534, 1.52s would do .547/.542. I wanted something a little more than a 503 and slightly improved valve open/close events and the 467 fits the bill there.
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