| |
Click on image for the lowdown. 
====
| | | Forums66 Topics128,018 Posts1,055,339 Members48,419 | | 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!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Apr 2016 Posts: 22 'Bolter | | 'Bolter Joined: Apr 2016 Posts: 22 | What carbs are used on a dual set up? I currently have Rochester b.
I would like to purchase zenith or carters. Which zeniths to use? Or carters? I know it's preference but what models to use? Thank you in advance. I have offenhauser intake on a 235 stock engine with Fenton headers. | | | | | Joined: May 2001 Posts: 7,438 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,438 | This comes up about once a week. There has been plenty of discussion about it. Did you try a search? | | | | | Joined: Apr 2016 Posts: 22 'Bolter | | 'Bolter Joined: Apr 2016 Posts: 22 | Yes I searched. Some say zenith some say carter. Which carter or zenith. They have diff ones available. Thank you. | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | Maybe Carters from Chevrolet 216s or Zeniths from GMC 228s.
There might be variable main jets available for the Zeniths. | | | | | Joined: Feb 2000 Posts: 5,193 'Bolter | | 'Bolter Joined: Feb 2000 Posts: 5,193 | Carter W-1's #483 and #574. See bottom of page, http://www.thecarburetorshop.com/CarterChevroletW1.htmThey are not cheap, the kits are not cheap, but they work very well, are adjustable, and look right. | | | | | Joined: Apr 2016 Posts: 22 'Bolter | | 'Bolter Joined: Apr 2016 Posts: 22 | Thank you so much. At this point I'm trying and trying with the Rochesters I have but they are to far gone. I really appreciate the info. | | | | | Joined: Apr 2016 Posts: 22 'Bolter | | 'Bolter Joined: Apr 2016 Posts: 22 | Could they still be bought new? If so from where?
I found on eBay a couple but I would like matching carbs. , searched and found a place. Carbsonly.com
Last edited by Silenpro; 11/11/2016 6:04 PM.
| | | | | Joined: Feb 2000 Posts: 5,193 'Bolter | | 'Bolter Joined: Feb 2000 Posts: 5,193 | They must match, exactly, right down to the smallest detail.
You will find rebuilders who sell carburetors as remanufactured, stay away from these. They take carburetors from the same group and throw all the parts in one pile, they use that pile to make similar type carburetors. They will look alike, but the internals could be anything. There were a lot of carburetors made with different metering and sizes of openings and port. That was for a reason and for specific engines. Once you start mixing parts, all bets are off on whether it will run right or not.
Your best bet is to by cores and rebuild them yourself.
Last edited by Joe H; 11/13/2016 4:05 PM.
| | | | | Joined: Dec 2008 Posts: 1,922 'Bolter | | 'Bolter Joined: Dec 2008 Posts: 1,922 | There are 2 Offenhauser dual-1 bbl. intakes.
The smaller one (#1034 for the 216 and oldest 235) is 2-11/16" between bolt centers.
The larger one (#1035 for the late 235 and 261) may be marked "PG", as in "for the Powerglide engine" is 2-15/16" between bolt centers.
Relocating the bolt pattern is annoying, easier to use the smaller manifold with 216-size carburetors. | | |
|
|
| |
