Barnfind -- in my case, before I reengined to the 261 ... the 4.10 upgrade with the 216 was incredible. But ... the poor 216 ran out of oompah. It could hold 65 until the slightest hill or bump came along. Or a slight head wind ... But on the flat, the 216-powered 3804 could hit 70 and cruise (mostly) at or above 60. It just had no power. the 261 fixed all that
