250-400wrhp
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Joined: Sep 2002
Posts: 180
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From: long island NY
250-400wrhp
i want 350-400 RWHP and i was thinkin about starting with a ZZ4 short block. what would be the best and safest way gettin those numbers out of it. i would like to keep some sort of fuel injection and i would rather have no power adders but def. no nitrous. i was thinkin that it might be cheaper, safer and easier to do a LS1 swap and get around those numbers instead well probally the same price maybe a little more for the LS1 swap
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Joined: Dec 2001
Posts: 209
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From: Dallas, TX
Car: 89 IROC-Z
Engine: L03
Transmission: T-5
Axle/Gears: 4th Gen/3.42
a stock ls1 would probobally net you just shy of 300 rwhp.
With the zz4 you could achieve 350+ with a good set of heads, cam, and a stealth ram or a healthy tbi setup.
With the zz4 you could achieve 350+ with a good set of heads, cam, and a stealth ram or a healthy tbi setup.
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Joined: Sep 2001
Posts: 968
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From: Montreal\Quebec|Canada
Car: Camaro Z281991 Engine: 5.7L/350 TPI Transmission: TH700R4 ··································· Car: Acura CL 1998
Engine: 3.0L/183
Transmission: 4 spd auto/OD
A 400 cu.in sbc with 200+ cc heads and a 230+ duration cam
could get you there.
could get you there.
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Joined: May 2004
Posts: 169
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From: Lyndonville, VT
Car: 89 Firebird Formula
Engine: Custom Forged 402ci LS2 w/STS Turbo
Transmission: T56 6-speed
Axle/Gears: Moser 9" with 4.11
An LS1 mated to an auto tranny will be just shy of 300rwhp stock. Mated to a manual, it will be just over 300rwhp.
Add bolts-ons, heads, and a moderate cam, and 400rwhp is EASILY obtainable. Add aggressive cam and headers and you'll see mid-400's. This is without nitrous OR forced induction.
There are even a couple of cam-only setups making 400rwhp, with VERY aggressive cams.
I had to make a choice between the ZZ4 and the LS1, and decided on the LS1. Although we still have a lot of work to do before the car is back on the road, I'm still happy with my decision.
Add bolts-ons, heads, and a moderate cam, and 400rwhp is EASILY obtainable. Add aggressive cam and headers and you'll see mid-400's. This is without nitrous OR forced induction.
There are even a couple of cam-only setups making 400rwhp, with VERY aggressive cams.
I had to make a choice between the ZZ4 and the LS1, and decided on the LS1. Although we still have a lot of work to do before the car is back on the road, I'm still happy with my decision.
