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Old March 22nd, 2019, 02:04 AM
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LEWISMATKIN LEWISMATKIN is offline
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Join Date: Jan 2013
Location: RIDGE MANOR, FLORIDA
Truck: 1965 1002 GMC V6-305E
Age: 64
Posts: 307
Rep Power: 173
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Default Re: Warm up problems 305E

My first 305 was cold-natured for 2 reasons. (1) I increased the size of the radiator from 2 row core to a 4 row core, and (2) I ran Kendall SD3 SAE 40 engine oil in it. Also, winter time in Cullman could get below 0'F occasionally and hang at a consistant 32'F during dec.-mar. My fix- Install 2 engine heaters in the block, and cut a piece of cardboard to cover part of the radiator. Hope this helps.

Cordially,
Lewis Ellis Matkin, Jr.
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