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Old 09-15-2009, 02:33 PM
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Possible if they had a pile of 010 blocks left over- they quit casting then in '79 or '80, so to be in an '81 (Dec. '80 cast date), it would be a left over.

OP- do you have a carb? If yes, find the carb number stamped onto the body. If the intake is there, see what the cast date is on it, too. If there were exhaust manifolds, were they rams horns or logs?

The deal w/that CLY suffix is prolly that the engine is from a 1-ton or larger truck. The bigger trucks are not very well represented in the casting info from Mor Tec, etc. That could also explain why it was a 4-bolt 2-bbl.

I'd like to see what valves were in the heads- could be those big, 3/8" exhaust stems and might also have 1.72 intakes if they are correct for that engine and it was a truck.

Big trucks can have steel cranks so you might want to take a look to see what the parting line looks like- thin = cast, wide = forged, or look for a casting number on it.
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