few new guy questions.

[Purple Haze]

Should be close to the same but you would have to measure the 906s to be sure. If the 906s were milled you might loose compression going to the RPM.

Big difference in flows in ported 906 heads. Have you any flow figures for the ported 906 and what a RPM does on the same bench? A good 906 could outflow an OOTB RPM. Then you would gain nothing but the weight savings unless the RPMs were ported.

I got these heads from Pro Parts (Bill Bagshaw) back in the day, they were pro done but never got any numbers with them. I do know that the chambers were cut to clear the diameter of the pistons. As far as the Eddy's go I would have them pro ported if I decide to go that way.

I own pg 2.

 

[unknownsnake]

So I would be in ball park of 450 maybe. Sounds fair. Motor will be 40 over forged crank and pistons with ly rods