Big Block Swap For Trailer Towing

[Skull Bucket]

Thinking about putting a big block in place of the 283 in my 1966 Suburban. Been towing a 27 foot dbl axle camper trailer and feeling the limitations of the 283 small block - "it's time to put a bigger motor".

Looking for comments regarding ease of fitment, references to example threads that may be out there, suggested motor/auto-tranny combo.

Not looking for the Corvette super motor, just a good old fashioned big block with carburetor.