The GMC 'Twin Six' Is An Insane 11.5-Liter Four-Head V12 Meant To

The GMC Twin Six is the monstrous 11.5-liter all-American gasoline-powered V12 that you need to know about.

The GMC Twin Six V12: 702 Cubes, 275 HP At 2400 RPM, 630 Ft. Lbs. At 1600 RPM - Curbside Classic

How EASY is 800hp N/A LS build? - LS1TECH - Camaro and Firebird Forum Discussion

Car News Archives - Page 396 of 1165 - The Autopian

Commercial Vehicles Archives - The Autopian

Only One New Car In America Actually Sold For Under $20,000 Last Month - The Autopian

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The Legend of GM's MASSIVE 11.5L V12 Engine

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What was the GMC Twin Six?, The Daily Drive

Is it possible to have a partial forced induction engine? E.g only turbocharging 2 cylinders on an inline 4. - Quora

GMC's Remarkable Twin Six Engine: The Story Behind General Motor's Monstrous V12

The Engine Appreciation Thread (Awesome, Unique, Odd, Historic, etc..all in here)