what horse power do u think it makes

[solows10]

have a 91 s10 2.8 and here is the list of shit ive done so far
bored 30 over
comp cam
JE forged alm. pistons
cold air intake
headmen headers with true duals
eliminated 2 or 3 pullies total

and what im doing now
5.7 t.b. swap
roller rockers
porting the intake manafold
machining the heads to match the intake runners (port n polish)


this is all that i can think of if there is any thing else i might be able to do let me know i would like to have the highest h.p. 2.8!! naturaly asperated of corse


I WANT TO KNOW WHAT U GUYS THINK H.P. IS GOING TO BE IM GONNA HAVE IT DYNOED AT MY LOCAL CAR SHOW ON MAY 23RD

[bszopi]

Need more info than just a Comp Cam... specs?

I'd guess you are adding maybe 20hp... Given a stock 2.8 makes ~130hp at the crank, I'll be kind and say you're probably at ~155hp at the crank. After driveline loss (~15%), I'd say you are looking at around ~130hp to the wheels.

[solows10]

Description-Hydraulic-Good performance cam for 2.8L engine. Lope at idle with extremely good top end power.

rpm range-1000 to 5000

valve timing-0.006

lobe center angle-110

intake center line-106

intake exhaust
valve lash 260 260
duration 212 212
valve lift 0.44 0.44
lobe lift 0.293 0.293

thats what i could find on cam info

[geoffinbc]

Yea thats the standard Comp cam of choice. What is your compression ratio with those pistons?

[Superdave]

yep, i'd say 110-130 WHP range...

[34blazer]

how much P&P work is going into those heads? how are you tuning it?

[solows10]

how much P&P work is going into those heads? how are you tuning it?

what do u mean how much port n polish and the tune is uncertian as of right now since it is not complete do u have any suggestions

[solows10]

things to add to the list hypertech chip which says it 23 hp increase, ultimate tbi mod (port n plolish pretty much) thats all ive found so far

[BillS]

things to add to the list hypertech chip which says it 23 hp increase, ultimate tbi mod (port n plolish pretty much) thats all ive found so far

Hahhahahahahah....in their dreams - or did you mean to type 2-3 BHP instead of 23..?

The stock throttle body shows no restriction on a 2.8, so you won't gain anything there. The head and intake mods are worthwhile, but won't eliminate some serous bottlenecks in the upper intake.

Best bet would have been to convert using a 3.1 crank and pistons - a very useful bump in torque, but I guess you are past that point now.

[34blazer]

Hahhahahahahah....in their dreams - or did you mean to type 2-3 BHP instead of 23..?

The stock throttle body shows no restriction on a 2.8, so you won't gain anything there. The head and intake mods are worthwhile, but won't eliminate some serous bottlenecks in the upper intake.

Best bet would have been to convert using a 3.1 crank and pistons - a very useful bump in torque, but I guess you are past that point now.

i beg to differ. the larger 4.3 tb significantly bolstered the powerband, especially the low end throttle response. port n polishing the heads WILL greatly improve the powerband if done correctly. at the very least get a bowl blend, that alone increases flow roughly 30 cfm on the intake/exhaust. if you have a few bucks to burn, the heads to the machine shop and tell them what you want. it take roughly 3 hours for a bowl blend @ whatever their shop rate is.

[BillS]

port n polishing the heads WILL greatly improve the powerband if done correctly.

And if you reread what I wrote you'll find that is also what I said.

[34blazer]

yeah i know, solows ask what it was and i told him in a nutshell. i only disagreed with you about the 2.8 tb