Crankshaft or timing cover seal 1962 305
 

Looking for a timing cover seal for my 1962 GMC Suburban 305 and after ordering two using the number on Rockauto that were incorrect. I thought I was having trouble with CR vs SKF part numbers, but I think rockauto listed the part number for a straight 6 under the 305 listing.

I found the Felpro timing set part number, called Felpro and they said it was a dead number but I had them give me the seal number from that set, and it was a dead number also, but he crossed it to National Seal. The National number is 480574H OD 3.256, ID 2.375.

The obsolete Felpro timing set number is TCS 12937, and the crank seal in that set is P90931.

Re: Crankshaft or timing cover seal 1962 305
 

The National number crosses over to a NAPA Seals NOS 23685, shows the same dimensions. Plenty available. The timing cover gasket might be a little tough, NAPA shows the Fel-Pro kit but none currently available. The gasket is thin paper, you could use silicone. Might try Olson's:

www.olsonsgaskets.com

Re: Crankshaft or timing cover seal 1962 305
 

I found 2 SKF seals in their catalog for a 2.375 shaft and a 3.251 bore

23685
https://www.skf.com/us/products/indu...roductid-23685

and

23678
https://www.skf.com/us/products/indu...roductid-23678