My truck has a single speed rear end with 7.20:1 gears, 283 and SM420. Engine braking is real good. GVWR is 16000 lbs. I've had only 5000 lbs. payload on it but I can tell it wouldn't have trouble with more.
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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