Holley has the new 900 cfm Xflow out so we got one to test. Ran it on a 505 inch big block and made right at 700 hp. This is a pump gas engine with Trick Flow 270 heads, a Comp street roller cam and a ported Indy intake. View attachment 1715393776
Andy , how big a street roller,"specs" ? Do u know the head flow ? What comp. ratio ?
I know ur intake is a big help.------------------------------- Just curious , bob
