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I believe industrial 413s had an 8n bolt flywheel flange and a lot of the front end would not be used in a light truck or car application . The heads are diff and the cam spins opposite to the crank. Some other things are diff too like distributor etc.



Sir, you are wrong about the crank in this case. The ind engines in MHs use the normal 6 bolt crank. If they were mounted on pumps or whatever it would be a 8 bolt extended crank. The dist is a normal unit. The water pump, heads, intake and exmanifolds are the funky 1s.
I had 1 in a 72 class A Winnie Indian..

I am truckless..