It isn't often that an engine makes the front page of Wikipedia, but not many engines score as high on the Ass-Kick-O-Meter™ as the Rolls-Royce R!
Our last AKEOTD was a Chrysler-built tank powerplant, and you'd think it would be impossible to surpass a five-bank, 30-cylinder monster… but the IV-2220 airplane engine does just that. It's the very first Chrysler Hemi!
Is there any piston engine that could possibly inspire as much awe as the ICBM-haulin' GMC Twin Six? What if we said we'd found a 5-bank, 30-cylinder Chrysler for you? Yes, five banks!
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…