2.5 to 3.0 Exhaust

33IMP said
I have large exhausts on my cars, (3 and 3 1/2), but for your low compression 360, 2 1/2 is just about perfect. Going to a three in your case will gain nothing but loud, and maybe hurt.
Engine masters have done 2.5 vs 3 on both a stout big block, and a mild 350/383 .
Big benefit on a 600 hp big block, nothing but louder on the small block.

I did see that episode of Engine Masters but I knew their 600 hp setup is going to have drastically different results than my setup. I primarily have a stock 360 with Sniper EFI & Hyperspark setup. So I have a tad bit of performance added, but no changes have been made to the cam, heads, etc...