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Old November 9th, 2017, 01:24 AM
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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.
Posts: 1,341
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Default Re: Do we need to add Lead

Without hardened valve seats you need lead in the fuel. I've been using a lead additive for awhile now and motor is happy. Some members don't use lead and are fine to....but how much do they drive their trucks? How far? How long? How many miles on the rebuild? I drive mine everyday so I use the lead for cheap insurance. It was used back in the day....so no real good reason not to anymore. My two cents.
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1964 GMC 1500 305E/sm420 4 barrel intake mod and dual exhaust.
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