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1964 Corvette engine horsepower

by Brett
(North Carolina)

I have a '64 corvette and have always thought that the engine was the 327 300 hp version, but after recently having some service work done, the mechanic told me that it has the 250 hp engine instead. The engine code that I found on rt front of the head is:

4111001 FOI28RD

From what research I have done, the RD indicates 300 hp version. How can I confirm which engine I have?

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