BEFORE BLACK - Carburetors

The following table lists the number of the carburetors used on the Buick Turbo V6. All used the Rochester Quadrajet , with the exception of handful of the 1978 Sport Coupes, which used a Rochester 2-barrel. Numbers come from Buick Parts Catalogs. If you have questions about anything listed, please use the MESSAGE BOARD. Information sources listed at bottom. Note: While I have proof read the numbers, please confirm them before making decisions regarding your car. Also, the books are NOT always 100% correct!

Year	Body	Type	Production#	Service#	Model *
1978	A,B	2 barrel (231-G)	17058192	17055868	2GE
	A,B	Federal	17058240	17055841	M4ME
	A,B	CA	17058540	17055841	M4ME
	A,B	Altitude	17058246	17055842	M4ME
1979	A	Federal	17059243	17079688	M4ME
		CA	17059543	17079688	M4ME
		CA	17059547	17066314	M4ME
	B	Federal	17059240	17079272	M4ME
		CA	17059540	17065546	M4ME
		w/ SV Eng. (exc. Fed.)	17059544	17059272	M4ME
	E	Federal	17059242	17065542	M4ME
		CA	17059548	17066974	M4ME
		Altitude	17059546	17066974	M4ME
1980	A	Federal	17080243	17066505	M4ME
		CA	17080543	17066471	E4ME
	B	Federal	17080240	17066503	M4ME
		CA	17066473	17066473	E4ME
	E	Federal, EV Engine	17080242	17066504	M4ME
		Federal, MC Engine	17080247	17066968	M4ME
		CA, may be 17066470	17066480	17066480	E4ME
1981	A	All	17081243	17067190	E4ME
	E	w/ Closed Loop (NB1)	17081242	17067188	E4ME
		Export Canada (NM4)	17081295	17068021	M4ME
1982	G	1st design	17082244	17079006	E4ME
		2nd design	17082260	17068921	E4ME
	E	All	17082249	17068935	E4ME
1983	G	All	17083244	17079419	E4ME
	E	All	17083242	17079412	E4ME

Body - A = Regal/Century/Monte Carlo, B = LeSabre, E = Riviera, G = Regal
Production # - Number listed on left side of carburetor bowl. This is the number that the original carb should have.
Service # - GM part number for a replacement carb. Service carb with have production number cast into it.

The first digit of the carb number, "1", signifies that these carburetors meet emission standards introduced in 1975. Some parts, including metering rods, are not interchangeable with pre- 75 designs. In 1981, (1980 in CA), electronic metering control was introduced as part of the CCC system. The car's ECM reads the oxygen sensor and then controls the air/fuel mixture.**

With exception of a few California Emission Carbs, all 1970's carbs have "5" as a forth digit and '80's have "8". The fifth digit denotes the model year ("9" for '79, "2" for '82, etc).

Final three digits may have significance, but inspection of the above table shows no consistency.

The first "E" in the carburetor model number means the carburetor is part of the CCC system. The second digit "4" refers to the number of barrels. The final "E" refers to the electric choke.

Sources:
BUICK 1976 through 1981 Chassis and Body Parts Catalog, #41
BUICK Parts and Illustration Catalog, #44W
* Standard Catalog of Buick 1903-1990; Krause Publications.
** Rochester Carburetors by Doug Roe, HPBooks, 1981.