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

Newbie with a question

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Old Jan 12, 2011 | 08:25 PM
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Default Newbie with a question

Ok, so first off, I'm new to american muscle, I was a subaru guy for the last few years . I'm currently attending school at wyotech in PA, and I picked up a 97 z28 m6 in trade for my dakota. It already has an SLP intake and exhaust, some mystery injectors, and maybe tuning. I love the car but now that I'm in hi-po, I'm taking the chance to modify it a little bit.

My current build is:

New opti/tune up
Headers
LE2 Heads
cc503
Comp pushrods/lifters/rockers
Tuning
Ported intake mani
58mm tb

I've checked my afr's and fuel trim and the "mystery" injectors are providing plenty of fuel.

My question comes from some dyno runs I made today. I made 3 runs at 294hp/ 330ftlbs. It was done on a dynojet at room temperature. We also ran 3 other cars, and they made about what we expected (04 GTO, 300hp/310ftlbs-ish). Now to me, this seems high for a mostly stock car, so I wanted to know what everybody else thought. It is a 97, so I was wondering if chevy did the ol' mix and match with parts. Any input on my build or the dyno runs?
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Old Jan 12, 2011 | 08:34 PM
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lt1-xjs's Avatar
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Define mostly stock.
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Old Jan 12, 2011 | 08:35 PM
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Sounds like you got a slow car for the mods. Mine made 415rwhp but with a custom cam on a dyno jet.
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Old Jan 12, 2011 | 08:38 PM
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i would think a cc503 and decent heads should be good for ~350+ rwhp.
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Old Jan 12, 2011 | 08:38 PM
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Let me correct myself, as of today, the car just has SLP intake/exhaust, mystery injectors, and maybe a tune, but I doubt it. Everything else is what is going in in the next 3 months.
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Old Jan 12, 2011 | 08:40 PM
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in that case its running great.
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Old Jan 12, 2011 | 09:51 PM
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^ what he said... 294 is pretty decent for just an exhaust and intake
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Old Jan 12, 2011 | 09:53 PM
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CC503 is pretty small
Get a custom grind will make closer to 400 HP with the LE2 heads
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