Ummm...not sure if it matters but the GM LS7 (7.0L/427) engine was a 4" stroke and fuel cut-off was set at 7200 rpm. 505hp and had to meet all the modern emission standards and durability too. "More than 1 way to get the job done."
Remember I have both a 340 and a 408 and love'em both!! :thumbsup: