Thanks for all the reply's. The valves are new from S. C. The springs are new also. I wanted to use the same spring the cam was run on. The heads may have been milled I'll check with the shop on that. The bottom cup maybe the answer. I'll call show cars and see if they mite have sent me...
When I built the engine 9 years or so ago the Crane springs where recommended. Now the shop said they where to short and will not work on the 690. They are to short. I would have thought the 333s, 817 and 690 would take the same height spring.
I'm changing 333 heads to 690's and I need to know what springs to run. The springs in the 333 are Crane 99838's and the shop says they will not work with the 690's. The cam is S.C.s 920 Isky 515 lift with 234 dur. The engine is a 409 with Ross 11 to 1 and H beam rods in a '62 Biscayne with a...
I ordered seat foam from Ciadella's I sent it back, cost me $90. Just foam, no contours to it, just blocks of foam. You may have have better luck, but buyer be were.