I recently purchased an early aluminium engine case, and the vendor has offered some other parts that he has,


"a complete set of 1974 heads, ported to 39.5 intake and 35 exhaust (original porting and flow bench work done by Fumio Fakaya – Ferrari f1 master head builder)
906 Cams
930 Oil pump"


I have a set of mahle 90mm 10,4:1 P&C's and was planning on a 2.7 twin plug DC-40 build. I have not bought any cams yet, and have a stock set of '74 heads I was going to twin plug and port to match the cams I decide on.


I think i will pass on these parts, my research suggests that:


The 906 cams in a 2.7 will still be too peaky, and make no sense if i want to keep the 7300 redline for the 70.4 crank;

the 39.5 ports are too large for a DC-40 (or even slightly hotter cam);

and a 4 rib pump would be sufficient for my needs.


Is this correct?

your advice/thoughts please, what sort of build would those heads suit?

Thanks (and stay safe!)

Nathan


P.S. I have cross posted this on the Pelican engine rebuilding forum as well.