Thread: 280-340 HP build

i have a lot of those mods w/pcm and i am thinking maybe high-mid 14's as of now maybe low 14's with a 3.5 pulley

i also beat a stage 1 roush on the freeway unless he didnt know how to drive ? i also barely got beat by a late 90's vette (LS1) unless he didnt know how to drive either (lost by : h is rear bumper was at my front)

Dropping pulley's is a touchy subject, drop the pulley after you get something to scan knock with. Some people are fine with doing very few mods and then a 3.4". It depends on your car, fuel used, climate and factory freaks. You also don't want to check once for knock and then think you will be fine. Depending on the weather that knock might come back or get worse. You really need either headers or Front P-log/pem + Downpipe to go to a 3.4" after you get a pcm, intake and whatever else you feel will help.

To get to 280/300 shouldn't take too much depends on how you want to get there really.

Starters:
1. Intake- highly recommended wizair or make your own
2. PCM- buy a HP tuner if you are tuner savvy or go with a custom pcm/tune from overkill/zzp/trannyman
3. Exhaust- Headers recommended or you can try to get by with a Front powerlog + Downpipe, although I think near 300hp headers is a must.
3. A full size intercooler or XP cam, xp cam will lope at idle and may hurt gas mpg.
4. OR a short stack intercooler and 1.9 roller rockers.
5. OR buy a $2800 turbo kit from zzp and call it good! (sell your m90)
6. Save up for a tranny rebuild if you beat it!

^not gonna get close to 300 with those mods. Most cars with 300 have a cam and intercooler.

i thought we come stock with close to 240hp ? making an extra 60hp shouldnt be that hard . you figure 5hp u-bend delete , 10hp 3" downpipe , 5-10hp PLOG . right there is 20-25 hp . plus you add a pcm , colder t-stat , colder plugs , air intake of some kind you can figure at least 30-40hp gains then do a smaller pulley (if KR allows) you can see close to 300hp . right ?????? seems right to me anyways .

Originally Posted by bayareagtp

i thought we come stock with close to 240hp ? making an extra 60hp shouldnt be that hard . you figure 5hp u-bend delete , 10hp 3" downpipe , 5-10hp PLOG . right there is 20-25 hp . plus you add a pcm , colder t-stat , colder plugs , air intake of some kind you can figure at least 30-40hp gains then do a smaller pulley (if KR allows) you can see close to 300hp . right ?????? seems right to me anyways .

wow kid, you need to read up on your mods. half that stuff wont add even 1/4 of the advertised horsepower.

to hit 300 hp with these cars you will more than likely be cammed with a fullsize intercooler as preotic said. that said, these cars are the ones most likely to be running in the 12s with a good tune. people run 12s with rockers on a nice free flowing setup, but it just doesnt have the overall powerband a cam would.

for a quick car to have fun driving id do:

header/plog and downpipe (preferences/money), 1.9 modded rockers, a 3.4 pulley, and all the other supporting mods (intake, t-stat, etc.). adding a ported blower and throttle body on top of this only helps to reduce kr. i wouldnt see anyone being able to daily drive a 3.2 pulley on this as it would require low timing and the car will run overall worse.

for a fast car that youre going to drive on the street:

list above, but headers for sure and some sort of intercooler. short stack youd be able to run around a 3.2, fullsize youll be able to run anywhere from a 3.2 down to a 2.8 depending upon tune.

for a balls out fast car:

instead of rockers you need a cam. upon this would come into the area of heads as well, expensive as fawk.


so really..make up your mind on what you want your car to do and how you want to drive it before you ask what you can put on your car. also, with all these parts, installing them may be a problem if youre not mechanically inclined. in this case, dont mod your car any more than bolt ons and dont ever drop a pulley.

Originally Posted by bayareagtp

i thought we come stock with close to 240hp ? making an extra 60hp shouldnt be that hard . you figure 5hp u-bend delete , 10hp 3" downpipe , 5-10hp PLOG . right there is 20-25 hp . plus you add a pcm , colder t-stat , colder plugs , air intake of some kind you can figure at least 30-40hp gains then do a smaller pulley (if KR allows) you can see close to 300hp . right ?????? seems right to me anyways .

That is kinda ricer math. We've all done it at one time or another but it doesn't just add up that way. Also as some have pointed out 240 stock is misleading its more like 200 ish for stock GTP at the wheels.

Originally Posted by bumpingtp

My car (99 gtp) laid down 278hp and 321ft-lbs on a mustang dyno with a 3in DP, wizair, 1.9 rockers, 160* tstat, 3.4 pulley, and a tune. I guess I don't understand how a lot of people are saying most cars need a cam and IC to achieve 300whp.

because 98% of the time it is true. besides, 278 is not even close to 300.