Thread: which direction on carbs?
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12-04-2004 09:48 AM #1
which direction on carbs?
Just a question that was brought up in discussion. I've seen 3 duece set ups with the carb bowls facing both frontward and backwards. Is there a correct way? I can see mounting them forward so they would clear the distributor, but backwards looks better. Just an interesting question.Keep smiling, it only hurts when you think it does!
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12-04-2004 02:25 PM #2
While changing the orientation of the carbs may make slight performance changes, the primary concern (at least in OEM setups) has been a matter of clearance and ease of linkage hookup. The only factory setups that come to mind with the fuel bowls to the rear are the FE Fords and small block Fords. In those cases it is physically impossible to clear the distributor with a forward facing Holley without relocating the carbs to the rear away from the intake ports. While the rear facing carbs cleared the distributor, it also resulted in a rather complicated and awkward looking linkage setup. The other popular applications using Holley carbs that come to mind are the Big and Small block Six-Pac and 427 Chevy setups which in both cases have no problem with clearance and had the fuel bowls oriented forward.
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12-04-2004 02:53 PM #3
Re: which direction on carbs?
Originally posted by chevy 37
Just a question that was brought up in discussion. I've seen 3 duece set ups with the carb bowls facing both frontward and backwards. Is there a correct way? I can see mounting them forward so they would clear the distributor, but backwards looks better. Just an interesting question.Mike
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12-04-2004 03:52 PM #4
Thanks for the answers. There were about 10 of us discussing this and we all agree that using rochester carbs on a chevy block, they wouldn't work because of the distributor in the way. The ford block using hollys would seem practical but as far as what this would do for the bowl set up for getting enough gas I don't know.Keep smiling, it only hurts when you think it does!
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12-04-2004 03:55 PM #5
My Rochesters on the Edelbrock intake on my 390 had to be mounted facing rewards for the same reason the Holley's did in the stock application. Interfered with the distributor. Works out okay.Duane S
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On a quiet night you can hear a Chevy rust
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12-04-2004 05:05 PM #6
I'm running Rochester 2 BBLs (large base center/small base outboards) on my modified 63 T-Bird FE intake. The bowls are foward, but I have to use a mallory small base distributor (currently a dual point soon to be changed to the electronic version). There is no way with any distributor that a Holley will fit facing foward.
As far as Holleys they really don't seem to mind which which direction they go, as I said before both Chrysler and Chevy used them facing foward and Ford had them rearward. The main differences between the Ford tri-power carbs and Chryslers were that the Chrysler used metering plates (resulting an a slightly shorter carb) and no accelerator pumps in the outboard carbs with vacume linkage. The Ford set up used a metering block and bowls with an accelerator pump with mechanical linkage.
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12-05-2004 01:54 AM #7
Or just bolt on a TBI, run slightly larger jets and re-program your computer for a richer mixture at lower Rpms. And it'll start easy tooRight engine, Wrong Wheels
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12-05-2004 12:02 PM #8
Nice looking ford tri-power. WhenI get a chance I'll take a picture of my chevy tri-power and post it.Keep smiling, it only hurts when you think it does!
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12-05-2004 12:29 PM #9
This is the way mine looks with Edelbrock manifold and Rochester Carbs. And yes I know I need to rethink my fuel lines, but hey they work for now. Oops, that was before I redid the carbs with the speedway kit and new linkage on the other side. Sorry.Duane S
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On a quiet night you can hear a Chevy rust
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12-05-2004 12:50 PM #10
Originally posted by DennyW
That's true to, but, if you read back on all of this, that's what Henry was saying about using a accelerator pump, and hydro-carbons, hahaha. Money wise, a carb or predator, plus the mechanical challenge of a carb, is more fun to me. You know, like on mine, I would have to buy ALL the stuff to change it over. So, a carb is way cheaper. I don't even run electronic ignition. I like the dual point distributor. I have no problem with rpm's either. Plus, the cost is less.
I think injection is better because of the trim of fuel, and computer control, just the cost, and the fun is not there for me.
I guess I like to tinker more.
ps... i guess i got tired of tinkeringLast edited by lt1s10; 12-05-2004 at 01:00 PM.
Mike
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12-05-2004 12:53 PM #11
Just took this picture. Darned cheap camera and overcast skies.Duane S
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On a quiet night you can hear a Chevy rust
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12-05-2004 12:58 PM #12
Originally posted by Oldf100fordman
Just took this picture. Darned cheap camera and overcast skies.Mike
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12-05-2004 01:04 PM #13
Originally posted by DennyW
Below is a picture I was looking for. This is also a nice setup.Mike
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12-05-2004 01:27 PM #14
Originally posted by DennyW
I know what you mean. I ended up using a Judson Magneto, and the original points for the dual point distributor, much better than after markets, and added an o-ring around the distributor cap, and that pretty much curred it. I like the Judson, because points last twice as long. (passes half the amps through the points).It has a transistor trigger.Mike
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12-05-2004 01:38 PM #15
Old100fordman Can't believe the room youhave in that ford. Which I had more room in my 37. Nice looking intake.Keep smiling, it only hurts when you think it does!
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