70rocketpilot

Hi, I searched a bit and didn't see the answer I was looking for. I am wanting to eliminate the rope crankshaft rear main seal and install a Viton seal in my Olds. Will the Ford 460 cu. in. Viton seal that fits Oldsmobile 400, 425, and 455 cu. in. engines also fit a 394 cu. in. Olds? The crankshaft diameter is the same, I believe.

Oldskeeper

The Ford gasket is to narrow and what I did was bend up a spring spacer. Forget about the Ford gasket, Best gasket now make the split viton rear main for this engine. I use them and make sure that the grooves in the seal slot that are machined in to hold the rope gasket are sealed with a small amount of silicone.
The Beast gasket is about 40 bucks from Falcon engine supply and I found them on evil bay.
Steve

graysuper88

I used a Victor JV604 2 piece on my '57 371. I think it is for a MOPAR. Fit was exact. No leaks so far. I think I found that info on H.A.M.B. , maybe on here. Had all kinds of interchange info on upgrading to later model parts.