Engine Help

[MonzaRacer]

I like Pontiacs and for the record I would use the 4 deg advanced as it will give you more lower end torqe as it will build cylinder preasure.
Get the engine up on # 1 and set the timing at the 12 to 14 intial timing.
I like to use stock advance weights and then swap in lighter springs till you get the curve all in by your cruis RPM, this works best if you can source an advance type timing light.
With a advance curve kit I never use the new weights or plate. With 6X heads you need all the help you can get I would also go back to the 750 if its ok.
I then get my mixture set in drive idling then hook up your vacuum advance to manifold vacuum and then reset your idle speed in gear and readjust the idle mixture too .
Then give it a drive i will bet you will love it.
As long as your not spark knocking and its pulling hard your not gonna hurt a Pontiac, Drove mine this way for over 5 years and got some great mileage too for my full size car.
The 6X is an open chamber head with good flow and very efficient chamber and since all Pontiacs have machined chambers they are very knock resistant.
Any questions pm or email me at [email protected].
Good Luck
Lee Abel
AFTERMARKET PERFORMANCE

[Jeremy]

I got the timing set today and it is not a three way set. I am not sure if I will take it back and order a three way or not.

As for carbs the 750 is good, just dirty. I'll probably try the 600 for a while and see how it does. I checked all of the CFM calculators and according to the formulas is is plenty big. I understand that they are guidelines, but I hope to pick up some throttle response and gas mileage. Of course I realize it won't be a fair comparison as the 750 was running on a loose chain.