You need a Pontiac primary shaft that will accept the bolt on throttle arm, I believe 67-71 were the only years for that primary shaft, you can get them aftermarket, but they are junk...ask me how I know.
Ok, how do you know? I bought one of those aftermarket shafts, but haven't installed it yet. What sort of trouble is it going to give me?
- Pete
I bought one and installed it, it was fine when the car was cold, but the crap metal (likely chinese) expanded in the baseplate bores and did not allow the throttle to return to idle when the engine was fully warmed up....dangerous.
And I tried it in 2 different baseplates...very labor intensive to swap. Go to Cliff Ruggles site and look up a guy "Mr. Pontiac" he has all kinds of stuff, that's where I got mine from...expect to pay a premium ~50 bucks.
Thanks Doc! It would have certainly been frustrating to learn this the hard way. Doesn't look like any of the aftermarket shafts are advertised as working for my carburetor anyway (they're made for Buick/Oldsmobile Quadrajets, whereas mine is a Chevy), so I guess I'll get an aftermarket kickdown switch & eventually sell this original one.
