Thread: 12 valve swap!
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Old 02-15-2016, 01:39 AM   #3
kwmech
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Join Date: Mar 2003
Location: Colfax-California
Posts: 8,400
Re: 12 valve swap!
A cummins 12v swap in the 67-72 is a really tight squeeze requiring either firewall rebuilding or stretching the front out. PLUS frame work. If I remember right the engine pushes 1200lbs with coolers and everything
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