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Originally Posted by curtis73
The choke doesn't want to keep the secondaries closed until its warm, so do I tighten up the choke or bend the lockout tang?
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Uh...are you sure??
Q-jets usually have a pesky lock out that stops the secondaries from opening until the choke is warmed and open all the way. Half the time this lock-out linkage is troublesome. A simple tiny piece of fine wire can hold the lock out mecanism out of the way giving you secondaries all the time.
Have you adjusted the secondary air door spring preload? Usually you want to ligten up the load on the spring until it starts to hesitate a bit when the secondaries open, then tighten it up just enough to eliminate the bog.
As for the valves....you are using a method where you can adjust all the valves by just moving the crankshaft twice, right? That is always a bit risky. Remove all the plugs and both valve covers. Ease piston #1 up to TDC with the valves closed and adjust the valves for that one cylinder only. Then move the crank enough to do cyl#2. Sure you have to shift the crank a bit eight times, but this method is very accurate and fool proof.
Also......fix the vaccuum advance. Manifold vacuum is simply not suitable. It prevents proper advance just when you need it most - when you are into the throttle. If you have ever driven with a vacuum gauge hooked up to a ported source you would see how well suited it is to provide advance.
Also your distributor was designed for ported vacuum.
I cannot stress this enough. All your other tuning is largely a waste of time until you get that ported source fixed....Until then you are wasting fuel and not geting all the HP you paid for.