Does anybody know the standard valve seat dimensions for a 68 thunderbolt head? Or where to purchase valve seats?? I'm not having any luck finding the dimensions.. Thanks
Another option is '71-'74 2.0L Vin X Ford Pinto valves, intake 1.654", 0.3163" stem, 4.376" long. That would eliminate replacing the guide, you just have to shorten it. "Racing" Pinto valves are far cheaper than Kibblewhite.
I have not replaced A65 seats but if they are cast in like the triples they have a reverse taper. You could leave part of the seat in and press in a narrow new seat.
+1. Yes, cast in the head with a larger tapered shape at bottom.
