Thread: The Engine Chevy Should Have Built

Tweet

Originally posted by techinspector1
Although he's deceased now, Smokey Yunick said that he saw horsepower increases with longer rods because of what you mentioned about the TDC dwell.
http://www.clubhotrod.com/forums/sho...ghlight=trench

I think Smokey was wrong about that. His thinking works in bomb theory but not with a variable volume cylinder, where holding high cylinder pressure at TDC is more of a parasitic loss than anything else. Probably the most important thing a relatively long rod does is to move the pistons peak velocity farther down the hole. (More degrees to apply work to or extract work from the crankshaft.)