is 2.5 big enough from the manifolds

[97firev6]

The local muffler shop can only bend pipe as large as 2.5 inches. I was thinking of having it made right from the manifold, no cat, right back to the rear section. The rear section I have is a flowmaster 80 series that was on my bros trans am. I have his 3 inch intermediate pipe, but I have read that a bunch of people have had problems with it rubbing around the rear axle, and just don't want the hassle. So is the 2.5 big enough???

[TwoTealTerrors]

2.5 inches is more than enough. Alot of guys on here like the 3 inch exhaust but thats not to say that its needed. To each his own. If you were running over 400 horses then you might be concerned but I highly doubt you are so you will be fine. Also is the pipe the shop is bending going to be mandrel bent ? That will make a difference in both sound and performance. And if youre completely removing the cat I hope you like to hear her pop, because it will be doing alot of it.And last but not least youre going to be going from the y pipe back not the manifold.

Later,
Mike

[Paul Collins]

I know several V8 guys running 4" pipes with out issues.