I would like a few opinions on what you guys are running on stock big blocks. I am going to get the 40 series flowmaster mufflers and I want to get full length exhaust from the manifolds back and of course it will be in the form of duals. What I want to know is what size pipe to run? Thanks

 

2 1/2" all the way back to 3" chrome tips. Scope it out at:

beedzncomputers.com/truck/engine/rearleft.jpg ---- purrs like a kitten when I want it to, roars like a lion when I want to impress the neighbors at 2AM....

 

i had 2 1/4 on one stock 460, same on a stock 429, and 2 1/2 on another stock 460....they all ran about the same....i couldnt tell much difference