[trucktony]

It looks a like throttle linkage from a 60-66 chevy truck
the original has a rod through the firewall and is mounted to the firewall on the outside with two 1/4 bolts.
The rod has a round end that you can push in to your footpedal
It also contains a small lever that holds the gasrod in a certain position via your throttle knob/cable on the dash.
I use it as a cruisecontrol on the highway
But I think it was used to get the engine warm or for a PTO use
normaly on 6 cil. you use it to start the engine when you use the footstarter,and that way can't put your foot on the gaspedal.
But I think all v8's used electric startermotors.
So I can't think of any other reasons for it's use

Great build!!!