Thread: Chevy engine block ID assistance request

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Hello Andreas, the letter code CKH tells us that the motor was one of these 3 configurations....

1972....307 cubic inch....130 horsepower....2-bbl carburetor....Powerglide 2-speed transmission
1973....350 cubic inch....175 horsepower....4-bbl carburetor....4-speed manual transmission....California Emission System
1974....350 cubic inch....160 horsepower....4-bbl carburetor....3-speed or 4-speed manual transmission....California Emission System.

I know this is a little bit confusing, but Chevrolet used the same suffix codes on more than one motor.

You can narrow it down further by checking the rear of the crankshaft to see if it is fitted with a pilot bearing. If yes, the motor would have been used with a manual transmission. If no, the motor would have used an automatic transmission.

Looking at this again, I'm pretty sure it is a 350 block because of the 3970010 casting number.

Other members here may be able to tell you more.
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