Hei Help

[MrHotRod5263]

Here is what i am working with;

I have a 71 c-20, with the stock 350/Th350. With a Quadra Jet

P.O. swapped to Hei. it has a #368 Centerplate and #41 weights

I checked the timing yesterday and it was at 8 deg After TDC (idling at 800rpm), so i started to adjust it , and was able to get a max of 4 deg Before TDC before the vacuum advance hit the intake.

Here is what im looking for advice on.


1. I need to figure out how to adjust it so I can get it to advance further

1a. I've read that i need to pull the distributor and turn the oil pump
shaft but noone ever specifies which way to turn it, or how much.
I am guessing that i would need to turn it Counter Clockwise in
order to get more advancement, but then there is the question of,
How much do i turn it??

2. What are your thoughts on Initial / Base timing setting

3. How much advance is that weight combination going to give me

4. Is the vacuum advance better to be hooked up to Ported vacuum off
the carb. (like it is now), or is Manifold vacuum better.