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GMC V6 and V12 Engines Engine repair and rebuilding |
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#11
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From the Archives Previous Forum Posts...
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1961 GMC Suburban 305A Overdrive 1962 GMC Utility 305D |
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A lot of good historical information there... thank you!
After checking out the web and the 6066 site in particular, I excitedly purchased a 432 about three years ago from a truck parts yard. This particular motor was "rebuilt" and sat for many years on a shelf indoors. When I got it, a roof leak sent water into one of the cylinders. Anyhow, the motor has been completely gone through needing only a power-hone in one cylinder, rings, cam bearings, valve surfacing, and all the gaskets. I had issues with the flywheel as stated in a previous thread and purchased what I thought was a 401 wheel. Currently, I am using a 351 flywheel-housing, and a 5-speed transmission. I may or may not use a splitter, bit it is all going into a 1962 one-ton unit with 18-inch wheels. The intake manifold has a date stamp of 1971, but manifolds can easily be swapped out. With all the great help I am getting from the 6066 brothers and sisters (THANK YOU ALL), it sounds quite bit like what I thought was a 401 flywheel is actually some other 8 bolt GMC V6 wheel. In either case, the wheel, front counterbalance, and the crank have all been balanced as one unit. The motor sits in a cradle waiting to come to life soon. Just a couple of things left to do when time permits. In the meantime, the kids here at the high school are eyeballing the motor and asking many questions. They frequently stop by the 5-sp and shift through the gears. It doesn't take much to enthuse the kids.... they are as excited as I am. Last edited by Mulana; October 14th, 2023 at 04:41 PM. Reason: I wanted to thank my 6066 brothers and sisters for all their help thus far. |
#13
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Jim:
Yes 305 and 351 flywheel is interchangeable. I reused my 305 flywheel when I upgraded to a 351e via a rebuilt long block that I purchased. Hope that helps. Regards Steve New Orleans |
#14
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In my 305, I know that these lock tabs and slightly different is center of hole dimensions, they will only fit on one way. I happen to have a shot of mine when I was reassembling the old hydramatic.
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#15
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Steve: Thanks for your response... this saves me a bunch of time!
My next step now is to finalize a Fusion-360 drawing and send it to Send-Cut-Send, and have them laser cut me some new flywheel tabs. I am planning to have some six-and eight-hole tabs made and hand them out at cost if anyone is interested. Stay-tuned |
#16
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Jbgroby: Thanks for the picture. Nice motor by the way! I can clearly see the ring-tab and the identifier hole. This helps me out.
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