Here's a few reasons why I consider the Ford E-Series V10 to be a superb motorhome power plant:
1) Are Chevy cutaway van V8s overhead cam?
2) Does the Chevy cutaway van V8 idle for long periods with no noise and no floor vibration like the Ford cutaway van V10 does?
3) Is the Chevy cutaway van V8 linked to a 6-speed transmission like the Ford cutaway van V10 is?
4) Does the Chevy cutaway van V8 pull motorhomes up long grades in Death Valley heat with the cab air conditioning on full blast and not move the water temperature gauge like the Ford cutaway van V10 does?
5) Does the Chevy cutaway van V8 idle for long periods in parking lots in 105 degree heat with the cab air conditioning on full blast and not move the water temperature gauge like the Ford cutaway van V10 does?