High idle and elevated timing

[71rehab]

Just acquired a 71 C20 and the plug wires were crumbling apart. Changed plugs and wires. PO had already added HEI.

I set the timing the old school way. Retarded the timing until when I romped on it, there was no pinging.

Newbie question: It *sounds* like its idling a little high. When I put a timing gun to it, it reads 32 at idle. Now, I've read the total timing should be around 32. Those two things combined make me think its idling far too high. My idle speed screws are turned all the way out.

Can anyone point me in the right direction?


71 C20
350 and quadrajet are original