MustangWorks.com : Ford Forums - View Single Post - is there a hp diffrence with tailpipes vs. turndowns

Nixon1 · 01-18-2003, 08:54 AM

Well if you've got a 4.10 posi rear, you should have plenty of low end....that extra low-end torque might actually be a hinderance to you, in terms of traction issues. But I would expect the loss to be upwards of 10 ft lbs down low...but that depends on how much power you're pushing. It cuts bottom end torque down and changes the power curve around a bit, but MIGHT add a little on the top end...but don't quote me on that. What kind of diameter are we talking about here on your pipes...do you have 2.5 in. or 3 in.? 2.5 should be right about perfect for power.

01-18-2003, 08:54 AM	#2
Nixon1 Registered Member Join Date: Jan 2003 Location: Palm Bay, FL Posts: 432	Well if you've got a 4.10 posi rear, you should have plenty of low end....that extra low-end torque might actually be a hinderance to you, in terms of traction issues. But I would expect the loss to be upwards of 10 ft lbs down low...but that depends on how much power you're pushing. It cuts bottom end torque down and changes the power curve around a bit, but MIGHT add a little on the top end...but don't quote me on that. What kind of diameter are we talking about here on your pipes...do you have 2.5 in. or 3 in.? 2.5 should be right about perfect for power. __________________ '91 Mustang GT 5.0 AOD Daily Driver Current stats: NEW 302 short block, E-303 cam (@.050, 220/220, .498/.498, 110 degrees), 1.6 roller rockers, Performer RPM heads (aluminum, 1.9/1.6, 60cc chambers), Cobra intake, Granatelli 75mm MAF, Billet AFPR, Equal-Length Shorty Headers, Off-Road X Pipe, Flowmasters, 4.10 POSI 13.73 at 103.8, ~2.2 60'