BlkGTStang

My friend says hes getting $300 headers for his 5.0 1990 LX, he says its gonna add a lot of horsepower. I was just wondering how much it would add?

Madskillz306

15-30 would be my guess depending if ya get a decent set.

92hatchLX

He's probably getting long tubes, they'll add I'm guessing what Mad said, about 15-30.

wildstang87

you guys crack me up. maybe 5-8 with good shorties, and 10-12 with longtubes.

92hatchLX

Seriously? Wow was I wrong, I thought that they would add more power than that on a stock engine, damn me...

sc94gt

Headers definitely open up more HP on a forced inducted engine.
I believe I gained quite a bit by opening up the whole exhaust though, maybe 35-40 at the motor.

posnick

if your running a stock engine 12-15 sounds right. if you have decent mods it could be as high as 35

Quik

going by peak they dont offer that much of a gain LTS vs SHorties. now overall they do have a good chart buts extremely close to the shorites and with unequals shorites flowing very well on topend. a few more ponies over teh LTS

this is why LTs arent needed for a stock or near stock motor.

91stang

what's on the setup on the stang? if it's stock or close to it LT's will actually hinder performance and take away your low end tq. b/c it's designed for higher hp's for over 350-400

vfast

headers give you 8-20hp depends on mods...going from a 2.25" to 2.5" will give you more....