Once upon a time, GMC created a V12 monster of an engine it called the Twin Six. It was massive, powerful, and not eco-friendly in the least.
Once upon a time, GMC created a V12 monster of an engine it called the Twin Six. It was massive, powerful, and not eco-friendly in the least.
The cast-iron madness of GM's 11.5-liter V-12 - Hagerty Media
What was the GMC Twin Six?, The Daily Drive
What was the GMC Twin Six?, The Daily Drive
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Yes, GMC made a V12 engine. And it was huge
Inside GMC's Mighty 702 Cubic-Inch V12 - Mac's Motor City GarageMac's Motor City Garage
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The GMC Twin Six V12: 702 Cubes, 275 HP At 2400 RPM, 630 Ft. Lbs. At 1600 RPM - Curbside Classic
The GMC Twin Six V12: 702 Cubes, 275 HP At 2400 RPM, 630 Ft. Lbs. At 1600 RPM - Curbside Classic