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Fox Body · 06-05-2003, 07:52 PM

All that won't add any hp/torque. It will free some up though

. Also depends on your engine specs. What are they? On a stock stang, longtubes can hurt your powerband.

Anyways, if you're going from exhaust manifolds or factory headers and exhaust to what you have now, I'd say you'd free up anywhere from 10-15 horses.

06-05-2003, 07:52 PM	#2
Fox Body Mustang Maniac Join Date: Sep 2000 Location: GA, U.S.A Posts: 2,266	All that won't add any hp/torque. It will free some up though . Also depends on your engine specs. What are they? On a stock stang, longtubes can hurt your powerband. Anyways, if you're going from exhaust manifolds or factory headers and exhaust to what you have now, I'd say you'd free up anywhere from 10-15 horses. __________________ 351W-powered 1979 Ford Mustang Ghia notchback '79 Video @ Idle Stock 5.8L under 4" cowl 'glass hood, C4 w/ Transgo shift kit, Holley 750 cfm, Edelbrock Performer RPM intake; Fluidyne Al radiator, Flexalite 175 electric fan, 1 5/8" MAC shorty headers, FRPP Al driveshaft; S&W 6-point cage; 2.5" Off road H-pipe, 2-chamber Flowmasters, 8.8" Rear w/ 3.55s; Weld wheels (15x6;15x8), Front: 225/60/15, Rear: 275/50/15 Nitto NT 555R Drag Radials; 14 x 4” K&N X-stream air filter. '92 GT (5-speed) Small In Car Video Stock 5.0L, 2-chamber Flowmasters, MAC CAI, Tri-Ax, Al pedals... "Red, thou art my companion. Hasten now your quickened metamorphosis to Green that I may conquer all who dare abide there beside me. May they be left thither behind burnt black." ---Fox Body