The Ford Barn - View Single Post

fordor41 · 01-22-2023, 11:09 PM

I haven't worked on 4100 carbs since the 70's or so but I have had a ton of 2100 2 blr carbs and venturi sizes from 1.02 to 1.21. all had the same sized main jets. I tried all sizes on our 302 and couldn't see any difference in idle, performance or richness in any of them.
maybe if I went to the dragstrip I would have seen a difference in performance but normal street driving I saw no difference.

01-22-2023, 11:09 PM	#7
fordor41 Senior Member Join Date: Oct 2011 Location: elmira,ny Posts: 1,526	Re: 4100 Carb for 1957 312 I haven't worked on 4100 carbs since the 70's or so but I have had a ton of 2100 2 blr carbs and venturi sizes from 1.02 to 1.21. all had the same sized main jets. I tried all sizes on our 302 and couldn't see any difference in idle, performance or richness in any of them. maybe if I went to the dragstrip I would have seen a difference in performance but normal street driving I saw no difference.