Hey guys.

So my accelerator pump is about done and my carb needs rebuilt. It has lean burn. And it's a 1945 Holley. My dad said he was gonna look and see if he can get one through his shop or look around for one that is jetted up a bit since I don't really have any money for a super six. Maybe hei if I'm lucky. How big can I go on the jets? And what is the best single bbl?

Thanks
Cody

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Old truck: 82 D150 225, 2bbl, dutra duals, 2.5" straight pipe to dual 2.5" tail pipes. Mud tires, 4spd, old forest service truck.
Current truck: 98.5 Ram 2500 ccsb, sport, 24v cummins, 5spd, 4.5" lift, 35's, 5" straight pipe.

You only have 2 stock choices:

Holley 1920 #58 jet

Holley 1945 (pre-79) #61 jet

I wouldn't bother with a Carter BBS and your truck.

-D.Idiot

How d'you figure this one-size-fits-all business? Fact is, there were many different jet sizes used in the many different 1920s and 1945s installed on the various year-model-engine-transmission-emission package configurations.

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

I think when I had my 1920 apart it had a 54 main jet. I just added headers so now seems like a good time to play around with jetting.
Ooops, I got a lil off on a tangent there.

The subject line he was asking for was jetting up...that's the max jetting that these carbs can use without going super rich...the 1920 with a 54-55 and the 1945 with a 58 are too lean to get a stock duster to motivate safely out of it's own way...I can't imagine a truck being any better. If he retains the lean burn he won't be able to jet up anyway especially with the timing locked in.

-D.Idiot

Ahhh, gotchya.

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

Thank for the help guys! Im gonna try and do the hei sometime. Idk when though.

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Old truck: 82 D150 225, 2bbl, dutra duals, 2.5" straight pipe to dual 2.5" tail pipes. Mud tires, 4spd, old forest service truck.
Current truck: 98.5 Ram 2500 ccsb, sport, 24v cummins, 5spd, 4.5" lift, 35's, 5" straight pipe.

That being said, that would be for gasoline...you could probably go 3-4 jet sizes bigger over that if E85 was on the menu...I'm sure with E15-20...+1 size might be in order.



-D.Idiot