bulletguy

i got a 383 stroker LT1 with a 76 mm turbonetics...the motor has stock casting heads ported and polished,comp cams 236/242 595/595 on 114 ls
eagle crank,h-beam rods/wiesco pistons....
made 486 rwhp and 594 rwtq. does this sound right ???? this was with 11 lbs of boost with a 12.0 a/f ratio
the motor is 10.1 comp..i thought it would be more hp.the car made 419 rwhp
and 408 rwtq N/A.....any help????

scottyd2506

why did you have a 10;1 motor biult, if you planned to boost it?
Sounds like a sweet setup, none the less..

I've heard of guys having well over 400 rwhp with only like 5-7 lb boost on LS1, might be a tune issue, over heating intake (do U have inter-cooler?)
I'll bet it is a tune issue.. 11's lbs can bring big power...
wish I had the setup

scott

bulletguy

it was built as an all motor car,after 2 years decided to put a turbo on it
does timing play a big factor in hp gains on turbo cars,think i may have to much pulled out

BADMOON

timing plays a big factor in anything

RyderTA

iTrader: (3)

There's a local guy with a 385 LT1 with a STS turbo setup running 7 lbs I think and he made 520ish in Vegas. So your a little low it sounds like, but it sounds like you have an idea on what it is.

LS1Z28-00

iTrader: (8)

sounds pretty low, my 03 cobra makes close to that power with just 11 pounds boost on a stock 281 CI, stock blower as well. id say a good dyno tune are in order.

SELLSZ06

iTrader: (12)

check the little things first ic pipes, boost leaks, wastegate spring, but it sounds like a tuner problem. Sounds like a pretty efficient motor it should make a lot more with turbo. Do you have a good intercooler without a lot of funky bends? LT1 manifold heatsoak a lot, you can try putting a carb style manifold it also might be chocked, or meth to counter manifold getting hot. but you are making good torque tho

whatever it is one thing is foe sure you should post pics!

VIPERKLR

iTrader: (11)

yeah my boy ryans car 97 camaro lt1 with just a ohio turbo kit 76mm made 409rwhp 428rwtq with a stock motor and cam with 10lbs boost

FASTFATBOY

iTrader: (23)

CED my boy, sorry I havent called you back. It is a tuning issue I am sure. you need to let Jeff in Baton Rouge tune it. Gaurantee it has a good bit of timing retard.

dre2013

iTrader: (7)

thats a pretty large cam for a turbo setup...is that the cc306?

speed_demon24

iTrader: (6)

Can you post the graph? What kind of drivetrain is it going through?

LS1powered09

iTrader: (13)

post the graph please

bulletguy

sorry guys,been away a while....well i think i got it figured out, i had 2 more deg of timming added and put it back on thr dyno, it made 537 rwhp and 607 rwtq........then i decided to cut the spintech muffler off and make a pull
AND it made 591 rwhp and 637 rwtq