looking at V8 swaps for my toy. i want to run a sm420/465 for strength/price/availability, and am looking at getting a TPI 305 from a late 80's or early 90's camaro, as there are lots of these motors around and available cheap. anyways, my question is: i know in '87 chevy went to a 2 piece rear main seal, and i heard that you have to adapt the tranny input shaft if you use a pre-'87 tranny with a newer motor. is this true/ what would be needed to be done to get a 420 or 465 onto a late model TPI 305? thanks.:usa:

No, you don't need to change the input shaft on either the SM420 or 465. You do need to make sure that you have the correct flywheel (i.e., post 1987)

hey, where in oregon you from? i'm at school in corvallis. get up to TSF much?:usa: