When I spoke to high performance engine specialist Gale Banks about this engine recently, he explained that, unlike the 6.6L Duramax which he has pushed past 1,200 hp, the 4.5L has relatively ...
Gale Banks already took a Cummins to Bonneville and did quite well. The next step is apparently to attack an endurance road-racing event with a Duramax-powered tube-framed GMC Sierra called the D ...
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