Hello,

Looking to do some planning on my engine swap and want to start with the transmission. I have my original '48 SM420 in the truck behind the 216 and it needs new seals, but seems to be in great shape. I also have an SM420 out of a '56 truck or around there. I'm going to be doing a new gasket in whichever i go with, but should there be any difference between using one or the other? The original has the longer 'snout' on the back with that ball-joint thing. Does this mean my driveshaft would be too short if I went without it?

FYI, I will be dropping in a 261 and the rear has been changed to 4.10.

Thanks!

1948 Chevy Thriftmaster 3/4-Ton
Poncho "farming" in Ontario
Starting in the DITY
Continuing in the Project Journals
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