My brother is a Powertrain Engineer at GM and forwarded me these pics of a rare 1960’s motor GMC made very few of. Not boat rrelated, but you gearheads might want to check out the spec sheet the owner posted and notice Torque to HP numbers. Interesting. Would of made a neat lil tugboat powerplant.
You too can own one!! Go to http://thunderv12.com/ to purchase.