Originally posted by XAHardtop
Anyone done any work with Yates heads??? These are used in NASCAR and drag racing and are VERY HEXY, but apparently are the business. (though in NASCAR's etc i think they use Clevo based blocks). The flow figures on the heads look damn good, but apparently they need ridiculous work on them. anyone enlighten me????
Yes the Yates head is pretty much the ultimate small Ford head and is basically what the Touring car guys use. The Brodix Neal and Edelbrock/Billy Glidden Victors are also up there. They have very small combustion chambers(39cc ish) for very high compression.
They do need lot's of work because they come bare in every respect(often they don't even have valve seats).
For a complete set of them it will set you back around $14 000!
They'll fit any small block Ford. But, require a special intake because of their raised intake ports.
The NASCAR blocks are "Cleavors" if you like; Cleveland deck height 9.2", Cleveland main bearing size 2.749" as opposed to 3.00" for 351W blocks, Windsor oiling, Windsor type front/removable timing cover.