motor mounts for a 37 pickup

[37 truck]

My 37 pickup came with a 1940 flathead installed in it. It had the stock rubber biscuit motor mounts. I see where many older frames need the u shaped after market spacers to install a later motor. What years need the additional spacers for clearance?

[TJ]

1949-1953 motors using the truck or Mercury Water pumps. Your '40 motor should not need the spacers.

[blucar]

The '49-53 8BA/8CM engines need the '49-50 Merc spacers to allow for the shorter ears on the truck/Merc pumps. The U adapter corrects the bolt off-set.. **This viable only applies to the '48 and earlier vehicles. Any '32-48 V8 engine is a direct swap, with some limitations, such as exhaust manifold clearances, oil pans, etc., into any '48 and earlier vehicle.
See attached pix..

[scooder]

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You also use some kind of offset spacer on earlier stuff when swapping engines (pump in head frame of some year, with pre 48 truck/pre 49 car engines and I think)
A 37 with a 40 engine, no issues or spacers needed.
Martin.