Thread: New guy looking for help with 1962 GMC
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Old February 13th, 2015, 04:32 PM
bigblockv6 bigblockv6 is offline
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Default Re: New guy looking for help with 1962 GMC
The 305 V6 engines didn't have hardened seats but GMC V6 engines 351 through 478 did have hardened valve seat inserts. Also the V6 did survive through 1974 so early 70's V6's were designed to run on low lead or no lead gasoline.
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