`Buick Experimental Engines`

The Buick Nailhead on the bottom right was "brutal". Supposed to make about 750 ft-lbs of torque and 550 horsepower. Never made it into production since Buick couldn't get a transmission to last behind it including the TH400.

One of the 2 experimental 4 bolt main blocks cast by Buick. See the article on the site for more info.