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#1544922 04/24/2024 2:49 PM
Joined: Jan 2023
Posts: 110
C
'Bolter
'Bolter
C Offline
Joined: Jan 2023
Posts: 110
Anyone familiar with a 250 Chevy motor? Did it come with a rochester carburetor 1 barrel, if so does anyone know the actual carburetor part number?
Thanks
Jim


1950 chevy shortbed 3100, 216 with a 3 on the tree.
Joined: Mar 2014
Posts: 4,209
J
Moderator, Electrical Bay
Moderator, Electrical Bay
J Offline
Joined: Mar 2014
Posts: 4,209
It was indeed a Rochester 1bbl but fortunately it was NOT a Rochester B or BC model. As I recall it could have been manual choke or auto choke. I also think it was the Rochester R-1 and there would have been an additional number for man/auto choke. I've seen some of these with Carter carburetors on them and one I had for a brief while had a Carter but I can't remember...want to say 4339 was the number? It was man choke.


~ Jon
1952 1/2 ton with 1959 235 | T5 with 3.07 rear end
Joined: Sep 2011
Posts: 1,363
B
'Bolter
'Bolter
B Offline
Joined: Sep 2011
Posts: 1,363
It would have come with a Rochester Mono-Jet.
As for # I don't have that info.


BC
1960 Chevy C10 driver 261 T5 4.10 dana 44 power loc
1949 GMC 250 project in waiting
1960 C60 pasture art
Retired GM dealer tech. 1980 - 2022
Joined: Jan 2019
Posts: 75
T
'Bolter
'Bolter
T Offline
Joined: Jan 2019
Posts: 75
My 69 Nova L 6 , 250ci engine ; YES , it came with a "Rochester Mono-Jet carb" = 1 bbl .

Look here (I just "searched Mono-jet carb" :

https://www.ebay.com/itm/1759917897...p;campaignid=20856436953&mkgroupid=1

I'm now using the Holley # 8007 , 4bbl , 390 cfm carb & OFFY intake . My car runs - - really good (using this set-up) ; still using my L 6 stock exhaust (here in Arizona) . . so,I still have stock "carb heat" .

jim

Joined: Feb 2004
Posts: 28,674
H
Kettle Custodian (pot stirrer)
Kettle Custodian (pot stirrer)
H Offline
Joined: Feb 2004
Posts: 28,674
That Rochester Monojet was sort of like a Dyson vacuum cleaner- - - -it "inhales vigorously"! I'd suggest using a Carter YF calibrated for a 258 cubic inch AMC/Jeep engine. It should bolt onto the original intake manifold, but you might have to do a little tweaking to get the throttle linkage working properly.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
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