The twin shoe drum on my drive line will lock up the rears when it's empty, I never tried when I had it loaded with 110 bales of hay. I'm real happy with the original single master/Hydro-Vac system on this truck, now that I rebuilt the whole system including the Hydro-Vac, it does a great job. If it ain't broke-don't fix it!
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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