How much power are headers,ud pullies worth on my (stock) motor?

[OrangeMustangGt]

as you can see in my sig, my car is almost bons stock except for the exhaust, etc anyhow, how much power can i expect from changine the kinked stock headers and some underdrive pulleys? will i be able to feel seat of the pants wise? i hope so, this will complement my nitrous that i will be putting on soon.....my friend gets his 97' z28 next week, so i gotta rock some parts!!!!

 

[OrangeMustangGt]

oh, flow teck headers, and bbk underdrives, steel

 

[urban96]

im gonna say 10-15 youll definatly notice a difference with just the pullies

 

[1105]

I noticed a difference with my headers, but I replaced the whole exhaust all at the same time.

 

[stunner6910]

get the ceramic coated longtube headers with ASP aluminum pullies. and for NOS there's nothing better than ZEX Dry System.

 

[red94fiveo]

The pulleys will give you a good increase. At this point with your mods I would say wait on the headers. I would save up a little extra money and get a good used Cobra or Edelbrock intake.

 

[stang_gt_1994]

I think that is a opinion. It is one of the easiest systems to hook up, I will give it that.

 

[stunner6910]

correct, my opinion, what would you recommend? fmi

 

[OrangeMustangGt]

oh yeah? the headers wont add much huh? ok than how about is it worth it because i am changing my clutch?....i mean, are they hard to put on after...?

 

[Pstatic]

both the pullies and the headers are worth 5-10hp. Note the pinch at the top of the stock headers. this alone chokes the rest of the exhaust system. I have never seen a dyno shoot out where a header was worth less than 5. So adding the two together you get 10-20hp. Saving for a good manifold is always a good idea, they will get you anywhere from 10-40 wheel hp, but also cost more money as well. But either will make good power.