I am negotiating to purchase a 1989 Spectrum 2000 33ft 15,000lb motorhome (RV) with a 4.5:1 drive ratio. The power options offered are:

1989 460 V8 with 3 spd automatic Tranny
2002, 2003, 0r 2004 6.8L V10 Triton with a 4R100 Automatic Tranny
or either a
2002 7.3L Power Stroke Diesel with 4R100 Automatic Tranny

I have been told that all of these options will operate in the ranged of 2000 to 3000 RPM around 70 MPH.

I am concerned about power in the mountains of NM and CO.

What is the best combination?

All advice appreciated.

Thanks,

 

If you are going to look for lasting performance, I would go with the diesel combination.

 

Do you have an opinion between the 460 V8 with 3 spd and the V10 with 4 spd?

 

I would opt for the 4 speed automatic. That will help a little on mileage. The V-10 is strong, but it likes to use oil after it has a few miles on it.

 

Thanks for this information