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Old October 8th, 2021, 05:25 AM
63gmc305e 63gmc305e is offline
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Join Date: Feb 2016
Location: rainier, oregon
Truck: two 63s ,1/2 ton and 3/4 and a 64 3/4 ton
Age: 58
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Default Re: Plaid Valve Covers....straight from the west coast Factory Rep.

The Eaton third member swap was very common at the dealership. Later in 1972 some 3/4 ton trucks with the automatic came with 3:73 gears. 20 minutes and my 68 C30 dually flatbed dump with 5:11 gears went from 40 top speed to 70 top speed and from 5 MPG to 15 MPG.
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