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Old 09-10-2006, 12:56 PM   #1
mtnrat
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What engine in a 71 3/4ton 4x4

I cannot see the casting number of the block. The numbers on the tab at the front of the engine are C61149415 K03 05 TKB.
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Old 09-10-2006, 01:36 PM   #2
hogrocket
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Re: What engine in a 71 3/4ton 4x4

My chevy engine chart shows a TKB as a 1976 model sb 350 used for a C10/1500 or a 1979 model used for a C30/3500. Your engine may have been swapped from the original, which was most likely also a 350. Hope this helps. M
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Old 09-10-2006, 03:24 PM   #3
Blazer1970
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Re: What engine in a 71 3/4ton 4x4

Yup, '76, '77 or '79 350.
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Old 09-10-2006, 10:00 PM   #4
mtnrat
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Re: What engine in a 71 3/4ton 4x4

I thought it was swapped in. I kind od remember that the fellow I bought it from 10+ years ago said he and his dad had rebuilt the engine.
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