Lacking Power
I purchased a 1998 Gulf Stream Sun Voyager today. It has a 5.9 liter Cummins Diesel with Allison 4 speed transmission. The test drive the owner took me on was about 20 miles, since I didn't drive I...
Forum Discussion
I had a 1988 Xplorer DP with the 12v Cummins 5.9, 180hp.....hills were an issue! the engine ran great, had decent fuel mileage, needed a running start on most grades....70+ coming into the hill, 40-50 at the top, depending on the incline & length... before you "boost" the HP, make sure your Allison Tranny can handle it.... the one in mine was only rated for about 230hp max, so I could have increased engine hp, and taken out the tranny!!!
