I have a 1954 3600 that has a 68 307 in it. it was installed in the 80s with the the original SM 420 transmission ( 235 block cracked ).
been playing whack a mole with 307 and have very limited time to work on it, isolated a rod knock on #1 cylinder and decided that its time for a new motor .
a new chevy 350 crate is here with assorted parts , front end of truck is off and engine parts are disconnected .
the question is should I pull engine and transmission together? which looks quite tight given the the way the SM420 sets behind that crossmember or pull engine and leave the sm 420 in place ( with extra support of a transmission Jack ) ? or remove sm 420 then lift engine out ?
any hard won experience to share here
Brice
