Reply to "Cylinder head choices"

That was'nt even much more than a chapter Jack. I was hoping for more from you.........
So I'll take the liberty if i may to quote Pat Ganahl on the subject:".....Ford had learned by then that cylinder hds. make an engine.And short of an all out hemi-head, the Clevelands are just about the ultimate in factory production configerations.....the Cleveland head is the ultimate refinement of the 'poly-angle" chamber design as well as the ultimate in " bigger is bettter" thinking for portsize and shape....they're all good......" - this from his very readable Ford Performance Book,-going on to point out the superiorities of the 351C over the Chevy he goes on to say that; " ..for anything short of Pro Stock compition, you cant improve on the performance of the 4V hds.(porting & polishing is actually discouraged).."
As an aside,I spent many months tracking down the right heads for my purposes,(finishing up a Gr4 replica)and eventually had to buy a complete motor just to get the heads;4V closed-chambered (62.4cc).I was determined to find a set of these ellusive beauties having read Pat Ganahl's lyrical description of them; ".....the quence- chamber is so named because it tends to actually extinguish the flame-front as it travels to the corners of the chanber because the quence area remains relatively cool.This helps reduce detonation or "pinging" in the cylinder.." and a greater advantage even than that, he mentions later ; ".....creates turbulence in the chamber, which improves mixing of air & feul,especially at lower rpms. This in turn yeilds more complete combustion and greater low- and mid range torque....."

The other great advantage of course over the Chevy is the equal length runner intakes compared to the Chevy 's un-equal length, siamised intakes...( At a Cobra Shoot-Out day here recently I was astonishde to see only 2 out of the over 30 Cobra's there had Ford power...........) Enjoy, tai