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305 bottom end 350 heads headers holly intke an 600cmf carb will run an idle at 8 degrees advanced but really runs good at about 30 degrees advanced.ive put a light on it an my mark is about an inch away from any degree mark. did they put the wrong damper on it? my vacum advance on my dist. touches my intake. but it runs good there thank you

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  • waagoshrulez Feb 07, 2010

    the enigine runs smoothly when I have the dist turned all the way into the intake but when I put the light on it the mark is an inch away. when I back it down to 10:8 degrees it will run, but it will back fire through the carb. i brought the #1 cylinder up on the compression stroke placed my rotor towrd my #1 firing possition, replaced my cap and started with my #1 plug wire going clockwise 18436572. how many different balancers are there for 305 and 350's from late 70's- mid 80's. could it be possible that I am one cog off and that I might have to spin my pump a little bit and get my dist to fall one cog back a little more.

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It sounds like the timing is off you need to put the crank at top dead center and the crank mark should be at zero pull the number one plug and make sure the piston is all the way up pull valve cover on the number one cover and see if the valves are loose, if they are not your timing chain is off by two teeth. To fix you will have to pull the timing cover off and point the teeth at each other the one on the bottom should be straight up and the one on top straight down. if you have air you can apply air to the #1 plug slightly if it leaks out then you can be sure the timing chain is off. once the timing chain is set at TDC zero then pull out the distributor and turn the rotor to #1 plug you may have to move the rotor gear two teeth you should be able to turn it both directions equally.

Posted on Feb 07, 2010

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Something is wrong if its an inch away from 8 degrees If the engine shakes or vibrates more than it should get the correct damper

Posted on Feb 07, 2010

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