Inliners International Forums General Discussion Engines One barrel carbs ?

Which is the best brand of one barrel to use on my stock 292 I-6 . 2 Speed Glide . 1/2 ton stepside .
I have been looking & bidding on E-Pay trying to get A rochester , I currently have A holley 1 bl .
I dont really like the holley , seems too small . Also cant adjust it too well . Think its A dodge carb .

why dont you get that single injector holley tbi projection unit. they mad eit for the 258 jeep so with a few mods u could get that to wrok pretty well with the stcok 292. itd expensie though around 800 new

Check out Bob Malin's 40 coupe/292 in the rides section. Running Holley-Webers from Langdons. Those carbs are really inexpensive and 'NEW' vs. antigues that are difficult to find parts for.
The H-Ws are actually progressive two barrels that with an adaptor will fit the one barrel manifolds. Also go to Langdon's site and check them out there.

Oh yeah . I forgot to mention that I am doing all my repairing the neglected parts on A POOR-MAN's Budget .
I have to be conservative with all my applications . I would love to modify the motor but I will stay stock for right now .

Look for an early (68 may have been the first year)Rochester Monojet. I've been running one on my 63 for the 2-3 years, other than my tendency to run it too lean it's been a good carb. It has variable jet that you can tweak. I've seen new ones for $75 but you can get the progressive 2 from Langdon for almost that.


Larry
68 C20 327 daily driver
63 C20 292 Camper truck
65 C10 ? Custom Cab AC,PB,PS,$flasher

Rochester monojets are usually very easy to find and cheap. On average I've paid as low as 5 bucks at salvage and as high as 20 for a rebuilt on EBay. The nice things about them is that they are pretty simple in design, easy to work on,interchangeable thru many models,jet adjustable within reason and complete rebuild kits cost under 15 bucks.

Try to get something from an engine of similar size to your 292. The H-W carbs are fine if you run more than one, but I think they're a little small to run just one on a 292. If you find a Rochester to use, make sure it's for a 292, not a 194 for example. You may have more luck finding a Ford 300 than a 292 Chevy at the salvage yards, not sure what the 300 used for a carb, but since it's of similar displacement, I would think its a possible alternative.

Just a thought from my past experience. You may want to record the carb mounting stud spacing on your current intake manifold to make sure a replacement carb base will bolt right on especially if you cross makes;ie,Ford,Dodge,GM.
You can elongate the carb base mounting holes if you have to.

I just Bought A rochester carb from E-pay . It came off A 69 chevy inline 292 . I will rebuild it & install it asap . A 1 barrel shouldnt be too hard to rebuild . Though it will be my FIRST shot at it . if I go wrong in the process - atleast I wont be out too much for another Kit .

Listed here (FROM THE AUCTION)
GM Rochester Carburator. Number that is in the mounting flange is 7003538, other numbers he can found in other places on the carb are 9G and 7004497-0-88.
http://cgi.ebay.com/ebaymotors/ws/eBayIS...MEBBI%3AIT&rd=1

When you buy your rebuild kit also buy enough carb cleaner to soak the carb parts clean. There can be a large amount of fuel gum built up inside
the carb. You really only need 3 tools to strip a
Rochester;Phillips head & flat blade screw drivers
and needle nose pliers.The kit instructions are usually very clear. Lay out the parts in order of disassembly on a tray so small parts don't get lost and match the new parts to the old. You'll likely have extras as most kits do several variations of the same carb. You also will have a small L-shaped paper ruler in the kit to adjust the float levels. Do this as carefully as you can. It's important.Follow the schematic and take your time. It's really not hard at all.

Comes with instructions !?
So I dont have to get A manual huh ? i was searching for A good walkthrough online , havent found on . I tried JOLLY's website with no luck . Maybe i could ask if he has one , it would be easier .

If anyone has found An ONLINE rebuild manual for These rochester Monojets , Could you please post A Link for me ? Just think A little info while tearing it apart would be handy .

Can anyone decipher the numbers off this carb ?
They just do not match up to any at the parts store . I havent gotten the carb yet & was just wondering . Trying to get A kit for it .

http://cgi.ebay.com/ebaymotors/ws/eBayIS...MEBBI%3AIT&rd=1

Ran, that carburetor is for a pre '68 . It is not a monojet. The carb number you need was on an aluminum tag attached to one of the top screws. Most of those carbs were enough the same that you can get a carb kit for a mid-60s 250 or 292 pickup. The kits are universal enough that should work. Without the tag I don't think there is any way to positively identify what it came off of. Actually now that I think about it is probably off a car with a 230 or 250. The reason I say that is because it has an automatic choke. All the trucks including pickups used a manual choke with maybe the exception of the '67s. But I think even they did. I think the first 6 cylinder automatic choke was on the '68 monojets. Hope this helps. Joe

Randy, That Rochester could be as early as a '58
model because the throat is a little bigger then earlier models. It is a Monojet. I have one with the same number on my bench right now. The rebuild kit I bought from a local parts store is as follows: HYGRADE CARBURETOR REPAIR KIT #123A for Rochester 1 barrel Carburetor Models B,BC,BV. Perhaps this info will up you and your parts guy. Automatic chokes appear on early Chevy
cars, my '55 for example, so it's likely from a car, but you can change it over to a manual choke if you have to. If you don't have a manual choke now, buy a kit to put one on but you will have to remove the thermostat cover and take out the spring to operate the manual choke correctly.

Hate to bust your bubble but a Monojet and a Model B series is not the same thing. Yes, they all have just one main jet and one barrell but a Monojet is the name of that particular model.

As long as this thing gets rebuilt & my 292 inline runs better than it does right now with this crappy HOLLY on it . I will be happy . The auto choke will be nice . I have the manual choke right now . Its good for running really rich when someone is TAIL GATING --- LOL !! BOOM !
All Kidding aside , I will look into that Kit Number , But will be taking this carb to the parts house with me BEFORE i purchase .The Guys at BIG WHEEL AUTO here in Kent Washington are good . They dont complain one bit when they have to open the book to find my parts .
Unlike SCHMUKS .
If its not correct or I am unable to re-jet this I will sell it (with all proper info) on ebay . Only cost $10.10 . No shipping .

OK Ozark6. My misunderstanding. Thanks for your info.

There is A stamped number of 7016289 on the choke body .
It has auto choke .
it also has numbers stamped on the throttle body of - 7003538
It is missing the cross piece off the top for air filter mounting . I Am going to have to make my other one work somehow .

I just added A new folder in webshots . Complete with carburetor photos which are MUCH NICER than on ebay .
I love my new camera .
http://community.webshots.com/user/blunderbustr

Randy, Nice stepside. Really nice FISH.

I noticed that the carb didnt come with the linkage for the throttle . So I did some backyard fabricating .
The throttle on this carb is on the opposite side as my Holly .
I used some 5/8 X 1/8 aluminum flat stock .
Its going to be hidden under the air filter in the rear of the carb . tested it & it works well ! Now I have to rebuild it . Just for schidts & Giggles I started it to see what it would do & it PUKED fuel all over through the throttle body before it started but Before I could turn the key off , it fired up . so I know it works . Just going to rebuild it soon now .
Making the linkage reminded me of working on my old Oliver tractor A few years back .
Well , I will put the photos in my webshots , I couldnt find A donor carb at the wrecking yards today so I did the best I could without the proper tools (FARM STYLE).
let me know what you think . I was just bored . Will be looking for the correct linkage , but until then this wil do .
http://community.webshots.com/user/blunderbustr

I'm picking up 3 carbs for $20 & $8 ship .
sounds good , One is usable others are rebuilable & I will play with the others trying to learn A little more about these type of carbs . Possibly combine the parts from A couple making one good one .
Who knows about the 1-3/4 though . What would it even fit ?

from Joe Dial:
>>Actually now that I think about it is probably off a car with a 230 or 250. The reason I say that is because it has an automatic choke. All the trucks including pickups used a manual choke with maybe the exception of the '67s. But I think even they did. I think the first 6 cylinder automatic choke was on the '68 monojets.<<

If I understand right, then the big one barrel model "B" from a 292 only came as manual choke?
I'm trying to set one up using parts from a BV.
It happens to be a 67 292 carb w/ manual choke.
Now I find that though the top of carb seems to interchange just fine the throttle body for the 292 is lacking the mount for the choke high idle cam. My 292 "B" carb has an approx 1 3/4" throttle while all my BV's are approx 1 9/16".
Has anyone seen a large throttle body with the mount for the high idle cam?
Any place to find specs for model B or BV carbs.
My Rochester book by Doug Roe has the specs for MV's but not the earlier carbs.
Also I've noticed locally that parts books are consolidated so much that the parts guys will deny 230's and 292's might have had different carbs! Thanks.