68/69 Q-Jet Info Needed

[Roger Legge]

I have a '68 L79/M21 and the Q-Jet that is on it now is 7029207 which I believe is a '69 350/350 MT carb. I also believe the carb that is supposed to be on it is a 7028219. The 7029207 has 37B (or 378, can't tell for sure) primary metering rods, 66 primary jets, BG secondary metering rods and a P hanger with 33797 stamped on it. I suspect it may have a '69 carb on it because someone put a rebuilt carb on it and the 7029207 was as close as they got - this is purely a guess. Can anyone tell me what jets, metering rods and hanger should be in a 7029207 and a 7028219? Or could an experienced Q-Jet person recommend what would work well? I live in Phoenix, so the winters are mild and the summers are hot, if that means anything. The car does have to pass an IM-240 emissions test. Thanks.

Roger
#36316

[Clem Z.]

Re: 68/69 Q-Jet Info Needed

7029207 1969 350/350 hp,#36 pri rods,#66 pri jets, BG sec rods. 7028219 1968 327/350 all the same internal parts.

[Joe L.]

Re: 68/69 Q-Jet Info Needed

Roger-----

For the past 20+ years, the Delco SERVICE replacement carburetor for ALL 68-69 small block applications has been GM #7046904. If I recall correctly, the carburetor supplied under this part number is stamped 7029207.

At the moment, I can't tell you what jets, rods, etc. are supplied with the 7029207 carburetor, but I would expect that it should perform perfectly for your application "out of the box".