The Ford Barn - View Single Post - 1936 pickup changing motor to a mercury motor

rotorwrench · 01-18-2020, 05:29 PM

The 99A was 239 but the 8CM is 255. I've seen one old 21-stud that was sleeved for 3 3/16" pistons and machined to take the 8CM crankshaft. It was a lot of work but they had a motor for a 35 ford that "looked" original and ran the whole Great American Race with no major problems. I bet it cost a fortune though.

If I was going to try and use the 8CM motor in a 36, I'd change all the frontal components over to the early style frontal accessories so that I could use a generator fan. That would be less work but it would require special build up of the engine to include an early type cam so the cam gear thrust would be correct for a crab type distributor. it's still a fair amount of work but mostly bolt on. The late to early motor adapters would have to be used to fit the engine mounts. I think Bob Drake still carries those. The 49 through early 51 Merc flywheel and clutch will work with the early 3-speed transmissions.

01-18-2020, 05:29 PM	#3
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,417	Re: 1936 pickup changing motor to a mercury motor The 99A was 239 but the 8CM is 255. I've seen one old 21-stud that was sleeved for 3 3/16" pistons and machined to take the 8CM crankshaft. It was a lot of work but they had a motor for a 35 ford that "looked" original and ran the whole Great American Race with no major problems. I bet it cost a fortune though. If I was going to try and use the 8CM motor in a 36, I'd change all the frontal components over to the early style frontal accessories so that I could use a generator fan. That would be less work but it would require special build up of the engine to include an early type cam so the cam gear thrust would be correct for a crab type distributor. it's still a fair amount of work but mostly bolt on. The late to early motor adapters would have to be used to fit the engine mounts. I think Bob Drake still carries those. The 49 through early 51 Merc flywheel and clutch will work with the early 3-speed transmissions.