Your throttle linkage should hook to the large hole at the top of the throttle arm. The hole is almost big enough to stick you little finger through.
Use holley grommet and plastic bushing kit. #26-103 for a stock type Camaro throttle linkage.
If your carb has a fairly long throttle arm lower half with the auto trans kickdown hole, hook your return spring there and run it back toward the rear to an anchor bracket.
If your carb is a double pumper and does not have the long lower arm on it hook your return spring to the hole your dad drilled out and run the springs forward to an anchor plate off the intake bolts or water outlet bolt.
I had a friend who had a double pumper and ran the spring off the hole very near the throttle shaft where the plastic accelerator pump cam screws on, he had to stretch it tight to make it close the throttle, when it did open, it popped wide open.
Didn't that carb come with instructions?
Check my web page for First Gen Camaro suspension info:
David's Motorsports page
First Gen Suspension Page
67 RS 327
69 Camaro Vintage Racer
65 Lola T-70 Can Am Vintage Racer
[This message has been edited by davidpozzi (edited 01-13-2001).]