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Old 07-14-2021, 11:08 AM   #8
sick472
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Join Date: Jul 2015
Location: Sedalia Mo.
Posts: 1,130
Re: '76 350 into an '85 3/4 ton 4x4

Thanks for everyone's help...it turns out the 76 motor had some issues (one scarred crank bearing and one booger'd piston). I found this while breaking it down to change the rear main seal. Good 84 400 suggested that, otherwise I'd never seen the crank bearing. So...time for rebuild. I am sure I will still be mixing and matching parts as the 76 block should be a good base to build from with the 85 block as a back-up.
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He who is without oil shall throw the first rod. Compressions 8.7:1

1972 C10
1976 C10 (parts truck)
1985 K20
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