Need info on engine 3970044

trike4mel

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Feb 24, 2013
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custom trike
Hi, new to forum. Building a trike. Have a CSB #3970044. Need all info I can get. Such as year, 2 or 4 bolt main, what model and year this came out of for parts. Thanks so much.
trike4mel
 

ChevyHiPro

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1976 Chevy Cheyenne 1500 P/U
Hello and welcome to the forum!
The Block Casting Number you posted, 3970044 is not a very common casting!
The 3970044 block casting was a short run casting (low volume) through the Tonawanda engine plant and was not to well documented.
So, it's tough to come up with exact information on it, as this Casting Number does not turn up.

If you would look on the Passengers side, front of the engine block, just below where the head mounts to the block, there should be a raised pad that will have to rows of numbers hand stamped on it.
Please clean that pad well and record the numbers (due to paint, dirt, grease build up, they may be hard to read) and post the numbers in this thread.
From those numbers I should be able to find the information you requested.
 

Trapper

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Feb 28, 2019
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I have a block with the same number. I all so have the number off the front pad.1002CMJ15z9202 nothing else.
 

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