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Old 07-18-2017, 11:53 PM   #5
60-66 Nut

Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 21,375
Re: 8 lug to 6 lug 64 GMC, also V6 to V8 swap

All GM 1/2 tons from '55-'70 were 6 lug. There was no such thing as a heavy 1/2 ton back then.

To change a '60-'66 3/4 ton to a 1/2 ton, you will have to change the entire front suspension including the crossmember from a '71-'86 C10 or a '87-'91 R1500. Then you will need the aftermarket 6 lug rotors.
Power Steering Box Adapter Plates For Sale HERE
Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE
Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE
Hydroboost Mounting Plates HERE
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