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modified LO3 horsepower? potential et's?

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Old Aug 26, 2006 | 10:46 PM
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jjames455's Avatar
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Car: 88 Formula, 77 T/A, 96 Z28
Engine: LO3, W72, LT1
Transmission: 700R4, 350, 4L60E
Axle/Gears: 3.42, 3.23, 3.23
modified LO3 horsepower? potential et's?

Here's what I have in my 88 formula


91 LO3 stock rotating assembly and stock 187 heads

L98 cam #049
1.6 roller rockers(cam specs with 1.6 are about 209/215 @ 0.050, .444/.460 lift, 117lc)
underdrive crank and alternator pulleys
a/c delete pulley
no smog pump or cat
flowtech shorty headers and y-pipe(i know they suck but they were cheap)
3" intermediate pipe
flowmaster 80
edelbrock performer intake non egr
holley 600 vac secondary
HEI distributor with 50,000 volt coil 32 degrees total with 10 degrees intial advance, vacuum advance


motor feels strong and pulls hard to 5200 for 305 any estimates on n/a horsepower, I think 250 to 275 maybe. how far off am I?

also running edelbrock performer 100hp plate nitrous system


all a/c parts removed, non power window or lock car
has 700R4 with shift kit and corvette governor

next mods will be 3.42 posi and TCI saturday night special convertor


any guess on how fast it will be 1/4 mile, I would like to see mid to low 14s n/a and low 13s on spray?


I mistakingly listed the heads as 081 on original post. wishfull thinking i guess

Last edited by jjames455; Sep 28, 2006 at 08:59 PM. Reason: typo error
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