I have a 5.0 V8 and was wonderin if 2 1/2 or 3 " is better with that engine? I'm going to be running glasspacks and Side exit before tire

 

Depends On how much cackle you want. The larger the pipe the more cackle and less low end torque you will have

 

i have a 302 with 2 1/2 . little crackle and sound gr8!! go with the 2 1/2

 

I think I will go 2 1/2 then cause I love torque and dont wanna give it up over 1/2 inch thanks guys!

 

3" too big unless engine is highly modified or a diesel.

 

should I consider 2 1/4? not necissarily going for sound would rather have more torque than better sound...I belong in a diesel but cannot afford it

 

That actually may not Be a bad idea seeing as how short the pipes are going to be. If im not mistaken thats what size stock is and a cherry bomb will flow way better than the stock muffler

 

i have a 96 5.0 with some moderate motor work and headers. i have 3 in comin out of the headers and my buddy gave me a magna flow that was 2.5 comin out. i put the muffler on and the truck struggled for power. so it depends on what your truck will act like

 

thats true. i felt a loss i power with my glasspacks on so i cut them off and my truck runs smoother and feels like all the power is there.

 

Ive got 2 1/4 pipe on my windsor with a single chamber flowmaster and that sounds badass. But my 460 has dual 3 inch pipe, two single chambers, and headers. And 460 cackels alot more but its louder but the windsor has a better tone.