Quote Originally Posted by Hotboat View Post
I'll probably get schooled, but isn't ps/ss 340cu max?
You are only off by 100 cubic inches.
No. SS is limited to .060 over bore 440(427 + .060 over bore) and is a lot of spec parts like block, heads, pistons, crankshaft etc. Spec gasoline

PS is limited to 500 inches, and unlimited modifcations. UNBLOWN, methanol fuel is OK

The Nascar engines are only PS legal.