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Old March 16th, 2016, 05:14 PM
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TJ's GMC TJ's GMC is offline
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Join Date: Mar 2015
Location: Cave Junction, Oregon
Truck: 1964 GMC 1500 LWB Wideside 305E V6.
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Default Re: Too much timing?

Boy that's interesting. Mine does have two, but maybe it wasn't what I thought. My 305E is a 67 series from what we were able to tell and it had the governed points dizzy on it...two vacuum ports on the vacuum pump....one in the front and one in the back. How it was supposed to work I'm not sure. lol I'll get some pics of my carb for ya later today. The two ports on the carb were both hooked to the pump.
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"Excuse the rust I use my truck"
1964 GMC 1500 305E/sm420 4 barrel intake mod and dual exhaust.
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