still wanting more

dh04 red gt · 05-13-2008, 12:44 PM

wel even after havig xpipe and cat back with a cai, and 3.73 gears with a sct tune. I still want more the car is alot funner to drive now and pulls hard specialy in 2nd gear. but would like to see another 25 hp and 20 ftpds of torque. thinking of plenium and throttlebody upgrade with spacers. and maybee under drive pulleys. But I've heard that underdrive pulls will not produce enough for the alternator or water pump. and that aftermarket thotle bodys sometimes stick open. is any of this true. and if i did do the pullies or thotlebody which ones to use. and will it get me the 25 extra hp im looking for or even close. and what would. with out nitros or supercharger. just want a little more and keep the n/a. al off this just so i can stay with my buddies 2005 gto when i first got the car he babyed his car but still beat me. after i found out he babied it he sayed he did not want me to get disapointed. so then we retried with just the exhaust and cai on mine he slautered me. so i did the gears big diffrence but he still puled away but not as bad. then i did the sct tuner and from a dig he only pulled ahead by a 3/4 car length but by 3rd gear and 75 mile an hour he started to pull away more. from a rolling start about 35 mile an hour. we stayed pretty close but at 80 he pulled away. so i figure 25hp and 20ftpds of torque would make a closer race. even it up a little

lubrizolsfinest · 05-13-2008, 12:52 PM

I know what you mean. I raced a GTO a few days ago and got pwned. I can't figure how to put my cars pic on my post. But I have a few aftermarket things but nothing much to brag about. The guy driving the GTO said he was just playing with me. I know his car had 400 horses and 13's in 1/4 mile. I think I will by a s/c nxt.

GStam66 · 05-13-2008, 12:54 PM

Well an intake spacer is good for up to and including 0hp, so im sure that will help you see how helpful that mod is.

TB and plenum is more for looks and throttle response, and helps flow at higher rpms. Honestly you might see 5rwhp from it.

Underdrives make it so that your car isnt wasting power by overspinning the waterpump and alternator. You're not exactly adding power, you're freeing power up. Expect anywhere from 5-10rwhp from underdrives.

Basically those mods wont get you the power you're looking for. I say trade in your x pipe for a shorty X, and get yourself some longtube headers. With full exhaust, you might see about 25-30rwhp gain. Exactly what you were looking for.

GStam66 · 05-13-2008, 01:00 PM

Our motors wont see much from bolt ons. Our 2V heads dont flow well enough. If you want big power, you're better off with nitrous or FI. Or you could just save up for a better motor.

My friend has stage 2 heads and cams. As well as full exhaust. Odds are hell be at about 300rwhp just from that setup. And any other bolt on he does will net more power than on a stang with stock heads, because the stage 2 heads flow better.

avlon06 · 05-13-2008, 01:06 PM

i'd go for a electric water pump before UDPs and supposdly with full exhaust its more like 10-15hp

GStam66 · 05-13-2008, 01:10 PM

Quote:

ORIGINAL: avlon06

i'd go for a electric water pump before UDPs and supposdly with full exhaust its more like 10-15hp

Ive heard as low as 15 and as high as 30, so the numbers are all over.

If you have a stock intake setup, and better flowing exhaust, then you arent taking in enough air to make good use of the freer flowing exhaust. Now if you had combined a CAI, tb and plenum, maybe a better intake manifold, with the full exhaust, youd see a better gain. But all that air still has to go through those ****ty heads. [&:]

Electric water pump is kinda expensive for the little power youd get tho, wouldnt you say?

10inch Terror · 05-13-2008, 01:11 PM

Cams will do the trick!

Stage 1's if you wanna keep stock valvesprings, Stage 2's if you don't mind upgrading valvesprings.

GStam66 · 05-13-2008, 01:16 PM

^I like the way that guy thinks.

But if you DO go stage 2 and you have to upgrade the valvesprings, you're better off buying better heads that already have all that done. My personal opinion is that heads and cams are a package deal. You do em together to save time and money and get the most power at once. Do it once, do it right.

dh04 red gt · 05-13-2008, 01:26 PM

Ive been thinking of heads and cam combo but realy did not want to start messing with the inside of the engine. since its my daily driver. and want to keep it reliable. and if i do the heads. what is the diffrence from are 2v engine and the new 3v engine can i just swap out and go with a 3valve head and new intake manifold or is it more than that

MU71L4710N · 05-13-2008, 01:28 PM

+1 for longtubes. cams or heads if u dont mind tearing into the motor a bit. remember with heads and/or cams your gonnawant a dyno tune (i'd rather get heads before cams anyways)

tb+plen and pulleys are a waste of money. youll probably see 5-10rwhp from 600$ worth of boltons like someone else said.