Re: Six Pack Mechanical Carbs....what air cleaner?
[Re: R/T1968R/T]
#2706046
10/11/19 09:13 PM
10/11/19 09:13 PM
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Joined: Mar 2007
Posts: 3,285 West Coast, USA
jbc426
master
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master
Joined: Mar 2007
Posts: 3,285
West Coast, USA
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I run a factory steel six pack Shaker hood base plate on my mechanical carbs. No fitment issues.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: Six Pack Mechanical Carbs....what air cleaner?
[Re: R/T1968R/T]
#2706071
10/11/19 11:13 PM
10/11/19 11:13 PM
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Joined: Jan 2003
Posts: 4,733 Moved to N.E. Tennessee
GomangoCuda
master
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master
Joined: Jan 2003
Posts: 4,733
Moved to N.E. Tennessee
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I made 3/8" thick aluminum spacers that go between the carbs and the aircleaner base. Without them the front fuel line interfered with the base. That was the standard 70-71 aircleaner. I'm a little surprised to read that the shaker base clears. Anybody know if the AAR/TA base clears? I know that an A12 base clears easy.
In theory, there is no difference between theory and practice. In practice, there is.
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Re: Six Pack Mechanical Carbs....what air cleaner?
[Re: GomangoCuda]
#2706270
10/12/19 08:49 PM
10/12/19 08:49 PM
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Joined: Jan 2006
Posts: 704 USA
rftroy
super stock
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super stock
Joined: Jan 2006
Posts: 704
USA
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I made 3/8" thick aluminum spacers that go between the carbs and the aircleaner base. Without them the front fuel line interfered with the base. That was the standard 70-71 aircleaner. I'm a little surprised to read that the shaker base clears. Anybody know if the AAR/TA base clears? I know that an A12 base clears easy. No, the TA base doesn’t clear without some changes. As you said, the problem is from the front fuel line fitting. The carbs came from the factory with that straight out nipple, which runs in to the front of the air cleaner base on the TA. The way I solved it, after many attempts, was using this 90° Holley fitting. I don’t care for these because if there’s weight on them caused by fuel line or vibration of the fuel line up and down it can cause them to loosen, unless you install them very carefully. Even with this fitting I had a double gasket between the carbs and the air cleaner. The first picture, under the air cleaner, is with one gasket. The second picture is the two gaskets. You can see it’s very close, and it gets closer when you tighten down the carb stud wing nuts. Robert
Last edited by rftroy; 10/12/19 08:54 PM.
AAR 4-speed 3.91, Tor-Red; 70 440 6 pack Roadrunner 4-speed 3.54, Plum Crazy; 68 Formula S conv 383 4-speed 3.23, Electric Blue; 69 Barracuda conv Slant 6 OD4 2.94, 71 B5 Blue; 78 Lil' Red Truck, Red; 70 Challenger S/E. 505 6 pack, Passon 5-speed, 3.55, B7 Blue
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Re: Six Pack Mechanical Carbs....what air cleaner?
[Re: GomangoCuda]
#2706411
10/13/19 02:50 PM
10/13/19 02:50 PM
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Joined: Mar 2007
Posts: 3,285 West Coast, USA
jbc426
master
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master
Joined: Mar 2007
Posts: 3,285
West Coast, USA
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I made 3/8" thick aluminum spacers that go between the carbs and the aircleaner base. Without them the front fuel line interfered with the base. That was the standard 70-71 aircleaner . I'm a little surprised to read that the shaker base clears.
Anybody know if the AAR/TA base clears? I know that an A12 base clears easy. I run individual -6AN fuel lines with banjo fittings to each carb. A straight out fuel line would hit on the front carb.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: Six Pack Mechanical Carbs....what air cleaner?
[Re: jbc426]
#2706424
10/13/19 03:23 PM
10/13/19 03:23 PM
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Joined: Jan 2003
Posts: 15,424 Omaha Ne
TJP
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 15,424
Omaha Ne
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any chance of changing to the center pivot bowls ??? I run the mechanicals on my 38 but I machined and air cleaner for it .
Last edited by TJP; 10/13/19 04:43 PM.
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Re: Six Pack Mechanical Carbs....what air cleaner?
[Re: TJP]
#2706471
10/13/19 07:22 PM
10/13/19 07:22 PM
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Joined: Jan 2006
Posts: 704 USA
rftroy
super stock
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super stock
Joined: Jan 2006
Posts: 704
USA
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any chance of changing to the center pivot bowls ??? I run the mechanicals on my 38 but I machined and air cleaner for it . No, you can’t use the center pivot bowls. The problem is the rear carburetor. The center pivot bowl is longer than the side pivot bowl, and when you put on the required metering block for the rear carb, it will interfere with the center carburetor. From the pictures I’ve taken, I can almost guarantee also that a center pivot bowl on the front carburetor would hit the air cleaner and not let allow it to seat, also due to the addition of the metering block, at least on the AAR and T/A air cleaner Robert PS. I updated this on 6/7/2021 in case someone is doing research and comes across this post. I think I made it clearer. RT
Last edited by rftroy; 06/07/21 03:41 PM.
AAR 4-speed 3.91, Tor-Red; 70 440 6 pack Roadrunner 4-speed 3.54, Plum Crazy; 68 Formula S conv 383 4-speed 3.23, Electric Blue; 69 Barracuda conv Slant 6 OD4 2.94, 71 B5 Blue; 78 Lil' Red Truck, Red; 70 Challenger S/E. 505 6 pack, Passon 5-speed, 3.55, B7 Blue
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Re: Six Pack Mechanical Carbs....what air cleaner?
[Re: rftroy]
#2706813
10/14/19 07:46 PM
10/14/19 07:46 PM
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Joined: Jan 2003
Posts: 15,424 Omaha Ne
TJP
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 15,424
Omaha Ne
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any chance of changing to the center pivot bowls ??? I run the mechanicals on my 38 but I machined and air cleaner for it . No, you can’t use the center pivot bowls. The problem is the rear carburetor. The center pivot bowl is longer than the side pivot bowl, and when you put on the required metering block for the rear carb, it will interfere with the center carburetor. From the pictures I’ve taken, I can almost guarantee also that a center pivot bowl on the front carburetor would hit the air cleaner and not let allow it to seat, at least on the AAR and T/A air cleaner Robert thanks, Something I always wondered about
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