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Holley 750 double pumper with a 700r4

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Old Dec 10, 2022 | 10:30 AM
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Cornharvester83's Avatar
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Holley 750 double pumper with a 700r4

Hey everyone. so I have small block 350 and I’m having a Holley 350 double pumper rebuilt for this motor. I have 700r4 tranny in the car. As we all know the 700r4 uses a Detent cable from tranny to carb. Now I do the cable has to be geometricly correct for proper shipping. My question does anyone know of what brackets I would need for the carb and intake manifold for this to be correct. This is the first time ever doing this so ya I’m a newbie to this. Any advice would be great. Thanks !!
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Old Dec 10, 2022 | 11:40 AM
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ironwill's Avatar
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Car: 1986 IROC Z
Engine: 5.0 TPI
Transmission: 700R4
Axle/Gears: 3.23 Posi
Re: Holley 750 double pumper with a 700r4

Originally Posted by Cornharvester83
Hey everyone. so I have small block 350 and I’m having a Holley 350 double pumper rebuilt for this motor. I have 700r4 tranny in the car. As we all know the 700r4 uses a Detent cable from tranny to carb. Now I do the cable has to be geometricly correct for proper shipping. My question does anyone know of what brackets I would need for the carb and intake manifold for this to be correct. This is the first time ever doing this so ya I’m a newbie to this. Any advice would be great. Thanks !!
The Holley catalog lists the brackets you'll need.

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Old Dec 12, 2022 | 07:13 AM
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bluegrassz's Avatar
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Re: Holley 750 double pumper with a 700r4

I used this bracket from Holley.
Holley 700R4 Transmission Cable Bracket
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Old Dec 12, 2022 | 02:25 PM
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Re: Holley 750 double pumper with a 700r4

In addition to the above, which mounts the TV cable assembly to carb, you'll also likely need the cable correction bracket. This mounts directly to the throttle shaft (where the throttle cable attaches) and provides the proper rotational geometry for correct TV operation.
The first bracket listed mounts the jacketed portion of the cable. The second bracket listed mounts the inner cable itself to the throttle.

https://www.summitracing.com/parts/hly-20-121



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Old Dec 14, 2022 | 09:48 PM
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Car: Resto-Mod 1987 IROC-Z Clone
Engine: Alky fed L92 Vortec Twin-Turbo 6.8L
Transmission: My own built/ design 4L80M
Axle/Gears: Custom 12 bolt (4.10:1)
Re: Holley 750 double pumper with a 700r4

Hey Cornharvester!

You asked the same question in the Automatic Transmission Sub-Forum...
I will Quote Myself from what I Posted over there:

Originally Posted by vorteciroc
The THM700-R4 Transmission does not use a Detent Cable.

It uses a Throttle-Valve Cable, and it is critical for the Life of the Transmission that it is correctly operational...
Otherwise the Transmission will start to slip and then fail.

I recommend the 3 Components in the Hyper-Links below for any 4150 Carburetor with a Throttle-Valve Transmission.

Main Bracket:


Main Bracket Link

Throttle-Valve Cable Attachment:

TV Cable Attachment Link


Geometry Correction Linkage:


Geometry Linkage Link
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Old Dec 15, 2022 | 07:58 AM
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Re: Holley 750 double pumper with a 700r4

Thank you very much for the insight on this . This has been truly helpful. i have been racking my brain trying to figure this all out. Thank you again
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