[Bob Carriere]

Combines are seasonal machines....... only used when the crops are ready. But even with high hours on the clock they tend to be run on a governor at a set speed similar to a tractor....... none of the street stop and go and flooring it a a green light. The industrial flat head was also used in air compressor, irrigation pumps, welders, etc.

The long block, typically referred to as the Canadian block around here is the 237, 251, 265 c.i. and its strength is torque at low RPM its weakness the long connecting rod that will let go at high rpm and come out the side of the block. The shorter block 207 and 230, the American block, has shorter connecting rod and more suitable for street driving with sustained higher rpm.

With your truck gearing the low revving long block is ideal.


Cheers and good luck.