Quote:
Originally Posted by flatheadkid1
Can someone outline what all is required to install a 4" merc crank into a 36LB block? All I know for certain about this conversion is that the counterweight O.D. needs to be turned down to clear the block and the snout needs re-machined to the early configuration. Any help is greatly appreciated.
|
Well, the crank needs some work. The mains ground down .100 to 2.400, the rods must be ground down to 2.000 so the LB rods will go through the bore, I wouldn't bore the LB block .125, Max .060, The block is thinner than the 37 up blocks. Get an aluminum rear seal retainer for the cap and block. Looks like you have the rest of the machine work figured out. It's a lot of work. If I was going use a 4in. in a 21 stud I'd use a 37-38 block. You can bore them .125 and use the 36 heads. Walt