When I had a 6.5 Detroit Deisel on the stand, I used a long bar between the stand-off legs at the rear of the engine, pretty good control and the ability to lock the bar against the floor.
1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy
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