trying to find out what is the code which starts with the letter C on a 1971 Lt 1 C 115101607 the last 6 digits match the VIN number, what is the letter C at the begining mean..Andy help would be very appreciated.
C3 engine code
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'71 engine code
Andy,
According to my NCRS Pocket Spec guide, a 1971 LT-1 engine has a 3 letter code of "CGZ". You may find this code on a rocker arm cover at the rear of the cover, adjacent to the firewall. The letter if stamped on the engine number pad could indicate the engine manufacturing plant. I hope this helps some.
David Nims #19639- Top
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Re: C3 engine code
The C means Chevrolet, 1 is for the numeral of the Chevrolet car line and the next 1 is for 1971. Your 5 is really a S which stands for St. Louis. This comes right out of the NCRS judging manual for 1970 to 1972 vettes. I have a older edition and it really good to have.- Top
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