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L-head · 11-20-2020, 08:44 AM

37-39 60hp blocks use the same size main brgs. 40 60hp blocks use a larger size main brgs. You may be able to identify the year of the block by the number on the rods as they are larger also. I think the rods are marked 92-XXXX. Without the main caps, the block would probably need to be line bored, if the correct caps could be located.

11-20-2020, 08:44 AM	#4
L-head Senior Member Join Date: May 2010 Posts: 163	Re: 60hp engine 37-39 60hp blocks use the same size main brgs. 40 60hp blocks use a larger size main brgs. You may be able to identify the year of the block by the number on the rods as they are larger also. I think the rods are marked 92-XXXX. Without the main caps, the block would probably need to be line bored, if the correct caps could be located.