exhaust hp

CaliJ1 · 10-25-2001, 08:43 PM

How much hp is expected to be gained at the fly and the rwh when adding long tube headers and a hpipe with coverters to a 99 gt with flowmasters?

1BAD89 · 10-28-2001, 05:04 AM

In my latest MM&FF mag. they dyno'd a stock Bullit, then put BBK longtubes, and H-pipe, and it added 30RWHP! So I'd expect similar gains with your car.

------------------
-1989 GT, not stock.

-2000 Camaro SS-A4,
13.4's bone stock.

-1989 Chevy S-10, EX. Cab-383(500+hp on motor), tubbed, trick flow heads, trick flow pistons, etc... autometer phantom gauges, "built" 700R4, roll cage, lexan back window, corbeau seats, R.H.S. 5 harnesses, Fuel cell, convo pro wheels, 15x14's with 29x18.5 M/T'S on back, 15x4's on front, nitrous, and so much more!

timk · 10-28-2001, 08:13 AM

but, in the mm&ff story, they were using an uncatted h, along with a computer retune.

i have those items with catted h, and no computer tune. 20hp seems more likely to me.
but maybe my car was a factory hound to begin with.

SMOKE · 10-28-2001, 11:11 AM

Well the real benefit will be seen when you add a power adder - supercharger.

10-25-2001, 08:43 PM	#1
CaliJ1 Registered Member Join Date: Aug 2001 Location: Goleta, Ca, USA Posts: 17	exhaust hp How much hp is expected to be gained at the fly and the rwh when adding long tube headers and a hpipe with coverters to a 99 gt with flowmasters?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Cobra-R Side Exhaust -- SWEEET!	SkammyManX	Modular Madness	3	04-05-2003 11:58 AM
exhaust cross-overs??	Simi Stang	Windsor Power	7	12-09-2002 01:20 PM
Speed Secret # 4	jim_howard_pdx	Windsor Power	13	11-10-2002 03:42 PM
Speed Secret # 3	jim_howard_pdx	Windsor Power	13	11-09-2002 10:35 AM
Header gaskets	Stang951	Windsor Power	18	11-01-2002 05:57 PM

10-28-2001, 05:04 AM	#2
1BAD89 Tubbed and Juiced Join Date: Mar 2001 Location: Tulsa, Oklahoma Posts: 1,861	In my latest MM&FF mag. they dyno'd a stock Bullit, then put BBK longtubes, and H-pipe, and it added 30RWHP! So I'd expect similar gains with your car. ------------------ -1989 GT, not stock. -2000 Camaro SS-A4, 13.4's bone stock. -1989 Chevy S-10, EX. Cab-383(500+hp on motor), tubbed, trick flow heads, trick flow pistons, etc... autometer phantom gauges, "built" 700R4, roll cage, lexan back window, corbeau seats, R.H.S. 5 harnesses, Fuel cell, convo pro wheels, 15x14's with 29x18.5 M/T'S on back, 15x4's on front, nitrous, and so much more!

10-28-2001, 08:13 AM	#3
timk Registered Member Join Date: Sep 2001 Location: st. charles, mo. usa Posts: 2	but, in the mm&ff story, they were using an uncatted h, along with a computer retune. i have those items with catted h, and no computer tune. 20hp seems more likely to me. but maybe my car was a factory hound to begin with.

10-28-2001, 11:11 AM	#4
SMOKE Old School ROUSH Join Date: Nov 1999 Location: Stockbridge, GA Posts: 531	Well the real benefit will be seen when you add a power adder - supercharger.