My bud and I just got through fabricating a hybrid throttle linkage for my 1968 Impala SS restomod. I have a 94 Z28 LT1 installed and needed to figure out how to utilize the factory 1968 throttle linkage coming off the firewall with the modern LT1 engine. The challenge to over come was the fact that the LT1 uses a cable that hooks into the throttle body linkage and goes through the firewall and attaches directly to the accelerator pedal. Old school, carburetor style linkage is completely different. However, that can be overcome with a little ingenuity. My friend and I went to a local u-pull-it yard and found that the throttle cables are almost identical on most early 90's GM products. We picked out two cables, one from a V6 fbody and the other, a mystery donor car. The piece we used was pulled by my buddy and I don't even know what car he got it from, but it snapped right in to the factory LT1 throttle cable bracket. The mystery donor car cable was nearly twice as long, giving us a lot to work with, in case we cut it too long. On the way home from the wrecking yard, we stopped at the local Ace Hardware and picked up Ace part number 50263 Ferrule/Stops 1/16". (see attached pic) Other parts used were sourced from my nuts/bolts stash which included two washers, one bolt (same diameter as the factory Impala linkage arm), one nylock nut and a spacer that we looped the cable around. So, we measure the cable at full-throttle and make the cut. Got it right the first time. We installed the ferrule, measured and marked the cable, and removed the entire cable assembly from the engine. We snugged it up and then following the instructions provided with the ferrules, we secured the ferrule to the cable. We re-installed the cable and after double-checking pedal movement and throttle blade position, we zip-tied the cable to the factory fuel line bracket shown in the pic and called it finished. This shows that folks don't need to spend hundreds of dollars on an after-market cable and you can end up with a factory-looking cable assembly for a total of around five dollars.
