Nitrous'd LS non-vtec. or LS turbo'd..lmk
02-21-2009, 09:46 PM
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Nitrous'd LS non-vtec. or LS turbo'd..lmk
ok people need some advice im either going to go top mount twin scroll gt4088r or do a stock bore/sleeve ls with block guard 11:1 cp pistons eagle rods and ls p75 head with full crower valvetrain and 404 cams skunk 2 intake and rmf header on 200shot wet direct port... which way to go.. lmk, I know boost is better but im just looking for some coersion, right now im looking at biggest bang for the buck i already have the ls head with cams etc and intake all i'd have to buy is the spray(know a kit for $200) and rods and pistons.. car will be dyno tuned and street driven in a 99 teg.. im really indecisive right now but just post up what you think. Normally i'd be all about boost but I have seen wrath's nitrous eg in action along with others and the damn things scoot... just lmk..
02-21-2009, 10:38 PM
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Re: Nitrous'd LS non-vtec. or LS turbo'd..lmk
A Gt40 (or 200shot) for a street car? Are you nucking futs? Please step into the door marked "REALITY", its really not a bad place.
You need to worry more about being indecisive about your actual goal, rather than about what F.I. method to use. A 500whp street car with FWD that has a torque ramp a GT40 (or 200shot) gives you will be much slower because you won't have control over wheel spin. Staged boost control or nitrous will help, but at a price: you'll still have terrible response/lag due to such an oversized turbo, and a staged n2o setup will add tons of complexity, price, and points of failure.
The problems you face using that turbo with the LS head, even if its a spectacular example of porting, is the unimpressive way it will spool the turbo VS a vtec head for a similar power level. You also have the inate problems of the non-vtec head at very high RPM's, mainly how the rockers love to go fishing in the oil pan.
If you plan on a fast street car, a larger GT30-sized turbo is more than enough. You'll be able to spin drag radials in 4th at full boost, except with twice the powerband [on a non-vtec head] of any GT40.
If your intended goal is to build a dyno queen that will make 14yr old boys wet at the local gas station/bar, well forget everything I've said. That's exactly what your proposed parts will do for you.
You need to worry more about being indecisive about your actual goal, rather than about what F.I. method to use. A 500whp street car with FWD that has a torque ramp a GT40 (or 200shot) gives you will be much slower because you won't have control over wheel spin. Staged boost control or nitrous will help, but at a price: you'll still have terrible response/lag due to such an oversized turbo, and a staged n2o setup will add tons of complexity, price, and points of failure.
The problems you face using that turbo with the LS head, even if its a spectacular example of porting, is the unimpressive way it will spool the turbo VS a vtec head for a similar power level. You also have the inate problems of the non-vtec head at very high RPM's, mainly how the rockers love to go fishing in the oil pan.
If you plan on a fast street car, a larger GT30-sized turbo is more than enough. You'll be able to spin drag radials in 4th at full boost, except with twice the powerband [on a non-vtec head] of any GT40.
If your intended goal is to build a dyno queen that will make 14yr old boys wet at the local gas station/bar, well forget everything I've said. That's exactly what your proposed parts will do for you.
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