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10-19-2016, 03:48 PM | #1 |
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39 motor which 4 barrel?
I'm setting up a 39 motor and have a 49-53 Offy 4bbl intake I would like to use up top. Which carb to use, and what about center outlet water neck interference with the carb body? I am sure someone has worked this out in the past.
Thanks Barn! |
10-19-2016, 03:52 PM | #2 |
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Re: 39 motor which 4 barrel?
i run a 54 Buick WCFB. it is small base and narrow enough to clear everything. They were the carb of choice in the 50's. It even has a rear fuel inlet so right by the pump.
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10-19-2016, 04:03 PM | #3 |
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Re: 39 motor which 4 barrel?
138,
I'm with Andy. I happily use a '52 Old Rochester 4 brl with the rear inlet, very tidy. The Carter WCBF is a more sophisticated carb than the Roch but after 4 years and zero issues I'm happy. Both have that vintage look....know waddi mean ? Charlie ny |
10-19-2016, 07:14 PM | #4 |
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Re: 39 motor which 4 barrel?
I agree. The Rochester is easier to work on and works well.
Sal |
10-19-2016, 10:10 PM | #5 |
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Re: 39 motor which 4 barrel?
I used the Holley Teapot 4 bbl.
Worked good for me for over 25 years. No interference at all. Easy hookup. |
10-19-2016, 10:49 PM | #6 |
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Re: 39 motor which 4 barrel?
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Now 1403 (500 CFM) Edlebrock 1403, runs great.
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10-20-2016, 10:32 AM | #7 |
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Re: 39 motor which 4 barrel?
41LjH? did you have to change ( go smaller ) the secondary jets and metering rods? I run the same carb and when the secondaries kicked in I'd get a bog from too much fuel dump. went on size smaller on both and it works fine now.
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10-20-2016, 11:26 AM | #8 |
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Re: 39 motor which 4 barrel?
Normally only the secondary jets control fuel supply, they do not have metering rods.
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10-20-2016, 05:14 PM | #9 | |
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Re: 39 motor which 4 barrel?
Quote:
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10-20-2016, 05:54 PM | #10 |
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Re: 39 motor which 4 barrel?
Will the Edelbrock 1403 clear the center outlet water necks, or would I need a riser?
manual or electric choke? What specific mods to the carb (jets,metering rod changes) necessary for a stock motor without any speed/performance upgrades? |
10-20-2016, 06:42 PM | #11 |
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Re: 39 motor which 4 barrel?
I have the Holley 4160 with a 1" spacer on my '40 with the same engine. Other than having to replace a leaking power valve several years ago, no problems.
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10-20-2016, 07:55 PM | #12 | |
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Re: 39 motor which 4 barrel?
Quote:
The Edelbrock carbs (old Carter AFB) are about the widest 4 barrel carbs out there. Can't say they will interfere, but if any would hit the water outlets, it would be the Edelbrock carb. Sal |
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10-20-2016, 10:10 PM | #13 |
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Re: 39 motor which 4 barrel?
Not sure but hope the pics help. Looks like with the center water outlets it won't. As for the choke I ordered my '49 from builder with the Edelbrock 4 barrel with manual choke. Works fine but wish I'd have gotten the auto-choke now.
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10-20-2016, 10:18 PM | #14 |
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Re: 39 motor which 4 barrel?
I went with a Holley 4160 for my '39 also. Had to go with a 4" riser to clear the linkage and mounted the carb backwards. While it ran right out of the box, it was a bit rich. I'm still dinking around with the mains (dropped 4 jet sizes) and secondary springs. If I had any sense, I'd just leave it alone and drive it but alas, I don't so I'm making myself crazy but it sure is fun!
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10-20-2016, 10:23 PM | #15 |
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Re: 39 motor which 4 barrel?
I use a 1 and a 1/2 inch spacer in my 37 pickup with edelbrock carb to clear centre outlet heads. I'm not sure what car you're putting this in, but 39 top hoses exit with a sharp right angle bend just above the heads so a low spacer may work. Edelbrock 500 carbs are great very easy to tune and no fuel gets spilled making changes. I use a manual choke which I hooked up to the original choke knob.
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