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Is The 8.3L Duramax ‘MegaMax’ Hiding In New Silverado HD, Sierra HD Prototypes?
New spy video shows Silverado HD prototypes testing in CO, supposedly with the 8.3L Duramax MegaMax engine. The question is - is there really a MegaMax engine?
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Report: Huge 8.3L GM Duramax Diesel Engine Rumor Is Likely a Hoax
If you have a strong affinity for massive diesel engines, you ought to invest in this one. Online rumors have been ...