Anyone here know if one of these is worth rebuilding? I'm trying to help a young guy that has one of these on a 250 CI brand X six. I searched some of the Chevy sites to no avail. Could I just replace with a rochester 2g?

Scott

The 2SE isn't bad to work with. Don't know that the 2g would fit. The 2SE progressive has two radically different throttle plate bores. The primary is pretty small. I haven't seen the 250 ci manifold, so can't answer the question.

Just make sure you don't have an E2SE. I pulled one of those off my Jeep powered by brand X, and set the way back machine by installing a vac advance distributor to run a 2SE. Works just fine. It's progressive, so can deliver OK economy when ones foot isn't planted. Rochester makes some pretty good carburetors, as long as we aren't considering the "B." The E2SE needs a computer to run the fuel mixture and dizzy. Run away screaming. I think brand X went to the electronic version around '82 or '83. They can be rebuilt, sure enough, but it's a pain in the patukus.

My 250 CI brand X has a Carter YF on it now. The Leakchester "B" caught fire for the PO, so I received it lightly toasted. I picked up a Clifford intake, and will be planting my old 390 Holley on it later this summer along with a distributor recurve.

CJ

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Part of Tyrde-Browne Racing

The Rochester 2se I had on a 250 was an excellent carb in its stock form. Its half a QuadraJet. If you like Qjets then yer in.

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Yeah....Im the one who destroyed this rare, vintage automobile.....

I know almost nothing about Rochester carburetors. What years was the 2SE used in?

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

From what I have been able to learn so far; the 2SE was a staged 2BL used on mid '80 GM 4 and six cylinders including the 250 used in trucks and some 4 and 6 cyl jeeps. It has really tiny primaries and a large secondary. The chevy guys tell me the non-feedback version wasn't too bad a carb, but the parts are hard to find, ie expensive, and this kid is on a low budget. I've been told its a good size for a small V6 like the 2.8, but is rather undersized for the 250. It would probably give great mileage on a 170 slant. The kid tells me he is into the secondary most all the time to have any chance of keeping up with traffic. If the bolt pattern is the same, I was thinking a rochester 2G, non staged 2bll would be a better choice and cheap to pull from the junkyard.

Scott.

The carb I had was on a 110hp version of the 250 as used on Chev PUs circa 1980-81. This six had dual exhaust and the 2SE ....to add 15hp over the 1 barrel version.

I ran this motor in a 3/4 ton 4x4 75 Suburban with a four speed in the mid 80s.
I used to scream the thing over passes in 3rd gear.

I now run a 330hp Vortec headed ,roller cammed ,EFI 5.7L and get the same mileage.......

The difficulty with the 2SE is that it was tuned for a very specific application (light duty, 2wd 1/2ton truck with auto and high gears) and gobbles fuel when you get your foot in it due to the large secondary.

I think it would make a great carb in a very light car where you could drive on the primaries most of the time.

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Yeah....Im the one who destroyed this rare, vintage automobile.....

1971 Barracuda with 318s had a rochester 2g or 2gc. I have one.

Had one on my 82 GMC. Durn good carb.

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If it was easy, everybody would be doing it.

Never knew there was such a thing!

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