Very Clean '69 Mach 1 #s 351/4-sp, Orig Paint Survivor

[Lynn]

For 1970, the 2v was 250 hp.

4v was 300

Boss Cleveland (R code) was 330 IIRC. But a hard to manage (on today's fuels) 11.7:1 compression ratio.

The R Code engine suffers from having intake ports that are too large. Friend of mine runs those heads on his Pantera track car, and uses "port stuffers" that make the intake ports smaller.... but they flow better.

That is about it for my knowledge of Ford V8s, other than EVERY 289 or 302 Windsor I ever disassembled had cracked piston skirts, which I always attributed to the horrible rod ratio.

[olredalert]

Originally Posted by Lynn

For 1970, the 2v was 250 hp.

4v was 300

Boss Cleveland (R code) was 330 IIRC. But a hard to manage (on today's fuels) 11.7:1 compression ratio.

The R Code engine suffers from having intake ports that are too large. Friend of mine runs those heads on his Pantera track car, and uses "port stuffers" that make the intake ports smaller.... but they flow better.

That is about it for my knowledge of Ford V8s, other than EVERY 289 or 302 Windsor I ever disassembled had cracked piston skirts, which I always attributed to the horrible rod ratio.

----Lynn,,,Your friend was wise as what he did builds velocity if done correctly. Kind of rams the air in!.....Bill S

[tom406]

Black Jade, like Burnished Brown, is pretty damn nice looking when applied well, esp in BC/CC, and to me is green in cast, not in how it presents.. The '70 4V ports are too big (from everything I've read) but I think the best way to deal with that is to throw the biggest stroker crank inside that will fit. I wouldn't build a Cleveland with 4V heads, as there are now better options, but I don't think that they're problematic enough to stuff the ports for street engine.