The 1970 Autolite 2100 series carburetor was used on the 250, 302 and 351 cubic inch engine. It was used through 1974 across the entire Ford Lincoln and Mercury car and truck line. The carburetor was first used in 1954 so it had a life span of many years. Most small block carburetors are very similar however if you are going to the junk yard to get one, try to get one off a similar year vehicle and do not try to install a big block 2100 on a small block engine or visa-versa. Once you have your carb, generally if you purchase a quality rebuild kit you can rebuild the carb and use the specs for your year.
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