Spec's 2003 and towing

What rae the spec's Hp/Trg at RPM? Plan to use 2dr blazer to tow 400 lb trailer and up to two Harley's( gross wt approx. 2000lbs) any problems doing this with Balzer? Are the stock springs up to the load or should additional suspension be added? MPG when towing and can I use overdrive gear? Thanks, Hall.

http://www.kandn.com/dynocharts/57-3017.jpg

You can tow them no problem, just only use overdrive if on completely flat highway where the transmission doesn't have to downshift all the time.

Just make sure you don't load the trailer tongue heavy, have the trailer wheels take most of the weight have downpressure on the hitch from the load.

I have towed 4 snowmobiles with very little issues, exceot gas mileage cause of always being in 3rd or drive.

You can use overdrive ONLY if you have a flat road.

You can use overdrive ONLY if you have a flat road.
What about going downhill for along period of time?

Should be fine in overdrive, it is when you are constantly fighting up hills that you should use drive.