Thread: 454 with comp Thumper cam troubles
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Old 08-06-2020, 12:41 AM   #16
woodsey
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Join Date: Oct 2011
Location: Stettler Alberta Canada
Posts: 10
Re: 454 with comp Thumper cam troubles
Thank you for the awesome information. Hopefully I can get the 71 GMC back on the road with her brand new engine
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