Re: L72 Big Cars
QQGSS, Yes, I believe your right on both comments. It is a Q on the trim tag that indications close ration 4 spd, and L72 (not an X). Also, the L72 carb List # is 3246 for big cars as you state. Sorry about my typos!
My car was built in St. Louis, S in the Vin #. It came from the factory with a 3.36 posi and M21.
Paul
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PaulD
'64 R-Code Mercury
'62 421 SD Catalina
'66 L72 Impala SS
'66 R-Code Fairlane
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