Go for the THM400. You will need a very short yoke to use your original drive shaft. A switch pitch (try PAE) will pep up a stock 2.56 axle. Other details later.
A 455 is great, but you might consider a 403. The small block bolts in easier, comes with valve rotators and HEI to cut maintenance, and is quite happy to run on crap gas. 17 Apr 2006 [EMAIL PROTECTED] writes: > The engine is a 350 backed by a TH350. My easiest choice > would probably be to go with a short block so I can still use > my original heads and Thorley headers. But I'm thinking > maybe drop in a 455/TH400 short tail instead. > Bruce
