I put a lot of miles on 318's (8V-71) and 307's (6V-92), all class 8. We had 9,10, and 13 speeds. 'Course we could only load to 80,000 due to Ohio limits, hauled Budweiser from Columbus to Ann Arbor 6 nights a week.

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