Thread: 1964 GMC Model 1002 build journal
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Old November 30th, 2022, 12:28 AM
tbucketnut tbucketnut is offline
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Join Date: Oct 2019
Location: GIG HARBOR, WA
Truck: 64 1/2 ton
Age: 65
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Default Re: 1964 GMC Model 1002 build journal
Moving right along on the V6 assembly. Block ended up .040 over on the cylinders, crank turned .010/.010 on the mains and rod journals. Cam freshened up at Delta cams along with the lifters were resurfaced. Mains came in at .0025 oil clearance, rods were in at .003 oil clearance. These pistons have the three compression rings, gaps are in at .020. Skirts were a little tighter than I liked but the machinist said it will be fine .003.
Notice the picture of the chain hoist used to lower the crank into the main bearings, these cranks are so friggen heavy.
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File Type: jpg rear1.jpg (2.96 MB, Multiple views, 10 clicks)
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Steve Stock
Gig Harbor, Wa

1953 Chevrolet 3100
261 cu inch, SM420
Finished Cab off restoration

1964 GMC 1000
305 V6, SM 420
Restoration is now started, still looking for an oldsmobile style power steering pump
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