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If it's a valve related problem, than why is the engine vacuum only pulsating after a 15 minute warm-up at resting idle? The entire time that it's fast idling during warm-up, it's smooth as silk! I flick the throttle to release fast idle and then I can then hear the vacuum advance flickering...

This web site about how to read Vacuum gages looks great! I will look into this! Thank You

Thank you for your reply! I forgot to mention that this is a rebuilt engine with only 8,000 miles on it since rebuild, so I am hoping this might not be the issue.

1970 454 running good, but rough idle. I started hearing a pulsating noise somewhere on top of the engine. I put my hand on the distributor vacuum advance and can feel it very rapidly pulsating. It stops few seconds and starts again. I disconnect the hose and connect it to a tee on a vacuum...

I have heard of these exhaust presesures before. I don't understand why they are occurring within the last 2 years. I finished restoring the car 8 years ago and don't recall the noise back then! 1970 big blocks do not have any emmisions hardware at all. No smog pump! I have checked for...

I am not sure when it started, but each time I use the 4 speed trans to decelerate my 1970 454/390, especially in first gear, there is this continous popping sound out the tail pipe. I have tried re-jetting the carb towards more lean, no change. I thought it was back-firing, but it does it when...

The right side turn signal does not shut off. Left side is fine. Has anyone taken apart a steering column with Tilt & Tele to fix this? I am guessing it's the turn signal assembly. Do I need special tools to take the column apart? I have only gone as far as the horn assembly so far to clean the...

Has anyone purchased/used the Ignitor brand ignition conversion kit for their C3 sold by Zip Products online? How much better is it than the stock points/condensor? Did you also by the Ignitor coil to go with it or will a standard Accel work just as well?:confused