'Pop's Engine' another 440 on the dyno.

dukeboy_318 said

Would you guess that the RPM heads would do about the same?

Click to expand...

These were ported Indy EZ heads.

Who is preparing the RPM heads? Ask them.

I really don't like to guess and so try to only report on what I have actually done. As I have not tested any RPM heads under similar circumstances, I do not know their capability here. Now having been there.....I do know that super prepped RPM heads will make 787 HP on a normally aspirated, single 4-bbl 451 with 91 octane pump gas.