Ass-Kickin' Engine of the Day: GMC Twin-Six V12

Illustration for article titled Ass-Kickin' Engine of the Day: GMC Twin-Six V12

After doing a little research on the GMC V6 in today's DOTS car (and recalling a reference to the Twin Six by commenter Paul_Y a while back), I find it necessary to pay homage to the mighty GMC Twin-Six engine. It wasn't two GMC V6s joined together- it had a unique block and crank, with four V6 cylinder heads bolted on. We're a little puzzled about why you'd use a gigantic gasoline engine for applications so obviously suited for a diesel, but who the hell cares? Look at this thing! Jump like a Twin-Six-equipped Suburban cresting a hill for more info...

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Illustration for article titled Ass-Kickin' Engine of the Day: GMC Twin-Six V12


The Air Force used the Twin Six in the trucks used to haul Minuteman ICBMs. So anyone who thinks he's a badass because he has a firearms arsenal in his SUV can go ahead and feel inadequate next to a MIRVed-megaton-packin' Twin Six machine!


Illustration for article titled Ass-Kickin' Engine of the Day: GMC Twin-Six V12


And the Twin Six didn't just power grimy old industrial stuff like trucks and water pumps; it's the powerplant for the beautiful Blastolene B-702. See, just add a little chrome and twelve straight pipes and you've got a real looker in the Twin Six. [6066 GMC Guy]

DISCUSSION

frankfan42x
frankfan42x

HMMM,.

Combine this

http://www.gmpowertrain.com/Libraries/Marine_Engines/Vortec_4_3L_V-6_Marine.sflb.ashx

with this

http://www.hotrod.com/articles/hrdp-0705-pitstop-chevrolet-v6-performance/

Mixtogether carefully with a modern crank and some block welding and you just might get a modern day monster that would win at a LOT of things the original was good at.