distributor/intake interference question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Alex Hayley · 09-19-2007, 11:02 PM

I have had funky timing since I bought the truck and finally got around to following the instructions on this thread ( http://67-72chevytrucks.com/vboard/s...d.php?t=258643 ) and others to reset it. I started the truck and began to advance it from 0 degrees with a timing light. When I get to 7 degrees, the vacuum advance hits an intake runner and vacuum port and can move no further. Here is a picture of my setup with the areas that interfere circled in red. Have I put the distributor back in incorrectly? Do I need to change the vacuum advance?

09-19-2007, 11:02 PM	#1
Alex Hayley Registered User Join Date: Jul 2000 Location: NC Posts: 987	distributor/intake interference question I have had funky timing since I bought the truck and finally got around to following the instructions on this thread ( http://67-72chevytrucks.com/vboard/s...d.php?t=258643 ) and others to reset it. I started the truck and began to advance it from 0 degrees with a timing light. When I get to 7 degrees, the vacuum advance hits an intake runner and vacuum port and can move no further. Here is a picture of my setup with the areas that interfere circled in red. Have I put the distributor back in incorrectly? Do I need to change the vacuum advance?



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