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5.0 crank work in early 302 block?

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1.3K views 2 replies 3 participants last post by  Mark O'Neal  
#1 ·
Ok, got a 69 Mexican block and was wondering if a late model 5.0 crank will work in it. I know the journals are the same diameter, my concern is the one piece rear main seal over the two piece in the block. I have a spare 5.0 crank. I just don't have an early 302 crank to look at.

I may later stroke the block, but for now, since the stock bores are still in specs, I want to keep it a 302 with a power adder for a project.

Thanks
 
#2 ·
The 5.0 crank doesn't have the oil slinger (lip) at the rear main, it may cause an oil leak when using a 2-piece seal as required for that block.