Gjac wrote:
wolfe10 wrote:
On diesel coaches not much improvement.
On gasoline coaches quite a lot of improvement. Examples: Ford F53 V10 evolved from 275 to current 362 HP (same displacement). Transmissions improved quite a lot. Some minor suspension improvements (addition of front track bar on F53). Much wider use of heavier duty gas chassis-- 22k and 24k chassis.
Since 2006?
Actually 2006 was the year Ford introduced the majority of the improvements.
In fact, this from the Ford website:
2006 F53 MOTORHOME CHASSIS
2 2006 F53 MOTORHOME CHASSIS
New or Revised—6/16/05
WHATS NEW
MODEL:
• F53 Class A Motorhome Chassis 2005 program cancelled and redesignated to a 2006 program (Job#1 1/3/05). 2004 model will extend until the introduction of the 2006 model (Refer to 2004 Specifications for information) (TY3-ES-10009).
POWERTRAIN/CHASSIS:
• New 6.8L V-10 3-valve gas engine with electronic throttle control.
• New GF-4 engine oil replaces
GF-3. Benefits include enhanced fuel economy, lower phosphorus
reducing catalyst poisoning and decreased
engine piston deposits and sludge (GEN-ES-10032).
• New TorqShift 5-speed Automatic Overdrive trans
mission with Tow/Haul mode (5R110W) is standard
and the 4-speed Automatic Overdrive (4R100) is discontinued.
• Track Bar Heavy Duty Front Suspension is now standard with all wheelbases (except 15,700 lb.
GVWR).
• All 19.5” wheels now include 10 lugs.