4.6 L TTorque

[Guest]

I own a 99 XLT 4.6 L Expy.

The engine specs for 99 state the horsepower at 240 @4750 RPM
and torque at 280lb-ft @4000 RPMfor the 4.6L

The 2000 engine specs indicate 215 horsepower @4500 RPM and
torque at 290 lb-ft @3250 RPM for the same motor.

The differerence in torque is minimal, but to maintain the 280-290
lb -ft of torque, you need an extra 750RPM.

Was 99 the only year that this was done?, and why.

I'm towing a 24 ft TT so torque is important.

Would increased Rpm's to maintain torque mean increased fuel
consumption, and the extra stress on the powertrain bring about
future problems?

I'd appreciate any advise as I'm planning a trip in the next week or so.

Deano.

 

[Guest]

yes and yes. Your fuel mileage will drop and it will cause stress on the tranny. If you don't have a tranny cooler get one, especially if you are going to be towing for any amount of distance.

 

[Guest]

Thanks,

I'll install a Tranny Cooler and take it cool.