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Mod | | | Forums66 Topics128,035 Posts1,055,443 Members48,422 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Feb 2012 Posts: 112 'Bolter | | 'Bolter Joined: Feb 2012 Posts: 112 | I am looking for a source for a rebuilt zenith 228 carb for a 1957 gmc 270. Does anyone make a rebuilt or remanufactured version of this carb? I am looking for one with a #3 base (the larger size) and a vacuum port on the lower throttle body section. preferrably with adjustable main jet but originals would not have this option from what I can find out
I have read articles that these were being remanufactured but havent had any luck actually finding one...any help would be appreciated
Old Truck addict
1950 chevy 1 ton napco
1956 gmc 1 ton dually napco
1954 chevy 3/4 ton napco
1957 gmc civil defense napco panel
| | | | | Joined: Dec 2008 Posts: 899 'Bolter | | 'Bolter Joined: Dec 2008 Posts: 899 |
Brian
1955.2 3100 Truck
The older I get the more dangerous I am!!!!! | | | | | Joined: Feb 2012 Posts: 112 'Bolter | | 'Bolter Joined: Feb 2012 Posts: 112 | I read an article about them (zenith fuel systems)and that is what started my look for new or remanufactured zeniths... but when I called them they said they do not make those anymore.. guess Ill just rebuild mine
Old Truck addict
1950 chevy 1 ton napco
1956 gmc 1 ton dually napco
1954 chevy 3/4 ton napco
1957 gmc civil defense napco panel
| | | | | Joined: Nov 2002 Posts: 2,763 Carburetion specialist | | Carburetion specialist Joined: Nov 2002 Posts: 2,763 | The S.A.E. size 3 Zeniths (and Strombergs) are sufficiently scarce that the commercial rebuilders cannot find cores; thus don't generally offer rebuilts.
These have been extremely popular with the antique car enthusiasts for several years to replace O.E. carbs from the early 1930's.
The carbs are available; but not in the price range most wish to spend when they are used to Rochester pricing.
As far as rebuilding yours: do it! Kits are readily available, and the carbs are MUCH easier to rebuild than the Rochesters. There are a couple of possible issues concerning both stuck accelerator pumps or the pressed in check valves; but both are easily overcome.
Jon.
Good carburetion is fuelish hot airThe most expensive carburetor is the wrong one you attempt to modify. If you truly believe "one size fits all," try walking a mile in your spouse's shoes!The Carburetor Shop | | |
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