LS Swap Throttle Cable Issues

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LateOnTheBrakes

5.3-Swapped 86 CUCV
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Feb 2, 2020
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Virginia
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Joshua
Truck Year
1986
Truck Model
CUCV
Engine Size
5.3
What is everyone doing for their throttle cables? My truck is a K30. I swapped in a 5.3L LM7 and installed a DBC throttle body and a cable bracket from a 2000 truck. I am trying to use my stock throttle pedal and the ~38" GM throttle cable (15040848). Everything installs nicely but the travel of the pedal only gives me a little over half throttle at the throttle body.

I have seen suggestions such as bending the throttle pedal fulcrum, using a crimp lead weight on the throttle cable, or swapping out the throttle wheel. I am going for OEM fit/finish and I'm hoping there are better options.
 

custodian

Full Access Member
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Catawba
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William
Truck Year
1973, 1985
Truck Model
C10
Engine Size
5.3 LS, 350
I used the Gm cable on my swap, 73 C10 5.3/4l60e. The wire was to long at the pedal and I cut the crimped stop off and I'm using a barrel nut like was used on a 69 air cooled VW Beetle throttle cable. I left the wire long and positioned the barrel nut where I wanted it.

I bought ten of them from here: https://airheadparts.com/vw-part/barrel-clamp-w-bolt-heater-cbl-accel-cbl/
 
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TrybalRage

Junior Member
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May 5, 2016
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Reading, PA
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Dave
Truck Year
1985
Truck Model
C10
Engine Size
5.3
I just bent the stock pedal assembly up a bit so that at rest it was putting a little tension on the cable. It doesn't take much.
 

LateOnTheBrakes

5.3-Swapped 86 CUCV
Joined
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Posts
463
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Location
Virginia
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Joshua
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1986
Truck Model
CUCV
Engine Size
5.3
Yeah. I ended up bending the pedal in a vise and it worked pretty well.
 

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