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

HP and 1/4 predictions

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Old 06-19-2011, 01:20 AM
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Default HP and 1/4 predictions

I got a hold of Lloyd Elliot and my heads and cam should be here in a week or so and the short block should be done soon.. I'm getting super antsy and was just wondering what everyone thinks the HP/TQ and 1/4 times should be. I'm hoping for ~400rwhp and have no idea about the 1/4 times. tried searching for people with similar setups but couldn't really find anything.

set up
Short block: 355, probe pistons +4.00cc flat tops, polished stock crank, shot peened stock rods.

Heads: LE heads with 2.00/1.56 valves

Cam: 227/230 .573/.568 w/ ultra pro mags SA 1.6 rockers

Exhaust: mid lengths, no cat, cut out

PCM: tuned by Madz28

Clutch: CC stage 2

Fuel: 30# SVO injectors, Walbro 255

suspension: SFC, LCA, LCA brackets, 315 tires, BMR springs, bilstein shocks

I want to say mid 12's in the 1/4 around 109?? I have no idea.. I just want to drive the damn car again. You guys think 400rwhp is doable?
Old 06-19-2011, 03:06 AM
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What the ****? It damn we'll better trap 117 + in good air minimum.

That's plenty for high / mid 11s.
Old 06-19-2011, 03:10 AM
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A lot of the guys running LE2 heads 223-224/230 style cams are running in the 380-400rwhp area and running as fast as 11.5x. I'm ruuning his 223/230 with a set of ported afrs and ill be up around the 400 mark once I get my tunning dialed in.
Old 06-19-2011, 07:58 AM
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I would shoot for a 12.0 in your shoes. Anything better is great, anything slower and its probably going to be a traction issue. Car deffinetly should have 11's in it. Horespower, who cares, it doesnt meant crap when it turns into smoke off the line.
Old 06-19-2011, 08:17 AM
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It should defiantly do better then 109. LE told me the LE2 set ups should trap 116+ in good air. That was over three years ago I don't know if things have changed since then.
Old 06-19-2011, 09:00 AM
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cant wait
Old 06-19-2011, 09:05 AM
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You shouldn't have any trouble finding dyno/quarter ETs for that combo, being that it's the most frequently replicated engine combo on this site.
Old 06-19-2011, 02:45 PM
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these lifters should drop right in, correct?

http://sdparts.com/details/gm-perfor...parts/12499225
Old 06-19-2011, 03:44 PM
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should ya. i got ls7 lifters for my build
Old 06-19-2011, 03:51 PM
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You say 315 tires, if those aren't dr's don't expect much traction at the track. With street tires I run mid-high 12's, with dr's low 12's. Launching an m6 is much trickier than an A4, way tougher with street tires.

Last edited by GREGG 97Z; 06-19-2011 at 05:43 PM.
Old 06-19-2011, 03:54 PM
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Originally Posted by GREGG 97Z
I read this post twice and didn't see you mention, A4 or M6? That will make a big difference in expected 1/4 mph and et estimates. Also you say 315 tires, if those aren't dr's don't expect much traction at the track. With street tires I run mid-high 12's, with dr's low 12's.
I put down CC stage 2 clutch, but I forgot to mention its a M6.
I also have a question about timing sets, will a stock replacement cloyes timing set be fine for my set up? I DD this thing, racing is usually stop light action and I might hit the track 8 times a year.. maybe.
Old 06-19-2011, 05:48 PM
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I missed the clutch description. Many people stick with a stock type timing set, you don't hear of many failures. I went with a cloyes double roller because it was a lot cheaper and much stronger, and I just run a small cam. It did require switching to an EWP and losing the CPS. If you are looking to add an EWP it's an easy change.



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