carburetor 70-72

[lyndon sharpton]

could some one tell me why there were so many different carbs for corvette? you had one for 350 then one for 454, one with A/T then M/T ect.. then horse power. other than jets what is different inside the carb for say a 350 270 base. to a 454 LS-5

[Joe L.]

Re: carburetor 70-72

lyndon-----

The difference in the jets (and, metering rods for Q-Jets) which you acknowledge is enough, alone, to generate a difference in part numbers. However, there were other differences, too. For 1970, for example, you have different carburetors across the board for EEC (California) and non-EEC applications.

Basically, the Q-Jets over this period were the same. It was just a matter of different internal components to make them specific for a certain engine application. Each difference, regardless of how minor, generates the need for a different part number. This is not a phenomenon unique to 70-72, though. Throughout the history of carburetors on cars, Corvettes and otherwise, there were a large variation of a relatively small number of basic model carburetors to accomodate different, specific applications. The "universe" of such differences expanded greatly when emissions control came into the picture.

[lyndon sharpton]

Re: carburetor 70-72

ok can you take a 71 carb for a 350 M/T an then convert it for a 454 M/T?

[William C.]

Re: carburetor 70-72

Sort of, You can change the main jets and meteing rods, but some of the factory changes deal with jets pressed into passages inside the carb. They are not generally available for replacement purposes, nor easily identified as to the proper configuration for your intended use.

[lyndon sharpton]

Re: carburetor 70-72

thanks bill!