Originally Posted by 1981zapper
A buddy of mine gave me a Quadrajet that was professional rebuilt, I figure I might as well put it on and see how it works since itís probably way better then the Quad that I have on it right now which is leaking from the base plate and is not responsive.
Hook up the vacuum advance and use the curb idle screw to lower the idle speed back down to a reasonable RPM, 8-9 hundred RPM or so. Reset the idle mixture screws using the vacuum gauge to get the best idle vacuum.
Total timing w/o the vac. adv. added in should be 36-38 degrees BTDC.
Take it for a short spin and note how it now responds.
This will not be the ideal set-up by any means but will tell me what I need to know to proceed.
will allow you to be sure the timing tab and damper are correct for TDC.
MAKE A TIMING TAPE
to see what the total timing is, w/o needing to use a dial back timing light.