Originally Posted by elmor353
Looking to buy main bearings for a 68 440 and have run into some confusion as to what fits what year. Keep seeing will not fit 3.555/3.675 or will not fit 3.930 flange. I know that they changed the main flange size around 74, but which fits which?

Early, pre 1974 is smaller O.D. flange than the larger ones after 1973 scope
Look at the casting date on your block to make sure what it is scope

Last edited by Cab_Burge; 10/21/19 02:09 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)