asifmustanggy

On my 89 5.0 i just put in a motorsport E303 and folw tech long tube headers with 1and 5/8 tubes and 3 inch colectors. Should i use 3" or 2.5" pipe to my mufflers. I have flomaster mufflers with 2.5 in's and out's. The mufflers are stainless so i plan on keeping them. So do i reduce the pipe at the header or at the muffler. Or cut the muffler to fit the 3". What are my gains or losses. thanks

luckythirteen13

why did you get headers with a 3" collector? just reduce it where ever its easiest because i doubt you have the hp to need 3" exhaust.

dimebag

get a reducer right after the headers... h pipe(might need custom now, because of the reducer lenght) mufflers... 2.5

decipha

what kind of power you running?? 3" isgood for the500+ range

asifmustanggy

So there are no torque or hp gains to 3'. What about X pipe vs H

asifmustanggy

331hp with a 125 shot of nos and 207 without.Using stock cam and headrs and 2.5 H pipe.

LesteR723

im getting a 408 with 550hp and 510 tq and the BBK LT headers i have have a 2.5" collector... is this gonna be a problem? should i cut off the collector and put on a 3"? im making my exhaust from the headers back...

ooticamitica

use 3", you will loose a bit of low end torque.

ruger311

if you plan on doing anything else go with the 3" so you don thave ot buy exhaust again later