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Discussion Starter #1
the code on my block is 3970010 which comes up as 350 or 327 how do i know the difference???
 

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I'm not sure if this is right. The code that you gave us, doesn't seem right.

MA 1967 327 manual trans. 210 2 Camaro

Nope: the 3970010 's were not made until 1969
 

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Discussion Starter #7
thanks 4 the help i rechecked #s back driver side reads 3970100 and front pass. behind alt. reads ma30800 but it has 4bbl

head reads 3998993
 

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Info for the head casting:

1968-76 3998993 350 1.72 1.5 - truck

The block sounds like an over the counter replacement 350. I seem to recall running across the MA designation before. If it was an OE engine installed in a GM vehicle, the assembly stamp would be Vxxxxyy(y) or something similar, and there would be a partial VIN either on the pad or on the flange above the oil filter.

A check of the block date code should confirm it is not a 68 327, and the casting number off the crank would confirm. The bore is the same.
 
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