351M rear main seal replacement
 

Is a 78 351M rear main seal one or two piece, any special tools? My engine is already out. :confused:

351M rear main seal replacement
 

Two piece. No special tools required.

351M rear main seal replacement
 

do i have to drop the crank out? i've heard you can replace them without droping it .:-X01

351M rear main seal replacement
 

Nope, No need to remove the crank. The rear main is a 2 piece. You might want to check your bearings while your in there

351M rear main seal replacement
 

I replaced one on a friends 76 - 351M back around 1980 and the rear main seal was a rope or wick type. We couldn't get the top half out. Did ford use rubber seals sometimes also? Can you put a rubber in place of a wick style? I was just wondering.