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'72 GMC Shortbed Stepside...last truck
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02-21-2016, 12:01 AM
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mild68
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Join Date: Dec 2015
Location: Normal, Il.
Posts: 110
Re: '72 GMC Shortbed Stepside...last truck
Great score.
You may be interested in this. There is a big block 400.
http://ls3registry.macswebs.com/tech/trivia.htm
A 402 is a .030 over bore 396. Nothing to do with the heads. Although yours may have 454 heads.
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