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rear end code?

635 Views 4 Replies 3 Participants Last post by  Mike
i have a 69 elcamino just bought ,tryed to figer out the numbers on it..the rear reads GCC 364 and a 1 or an L,looks to be upsidown num 1 ,,what would the ratio be and what year if it has been changed??????????
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Looked up gc codes in my
"chevy by the numbers" book the only gc code i found was 6 metallic brakes posi 273:1
passenger car.

Don't know if that helps or not jay
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