1989 d 250

[AndrewKing]

HI All,



I recently bought a 1989 D250 PU. Dose anybody know what the factory tow rating on this truck is?... Mine has the 3 sp 727 trans and I assume the 3. 08 rear end. I do not have the under bed trans cooler but I did add a large plate type trans cooler from DTT.

Thanks

Andrew

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[EZeis]

On a 1990 truck, it's 12,000 GCW or 14,000 GCW with super cooler. That's with 3. 55 gears. Scale truck, substrate from GCW and that would be trailer weight.



Earl

 

[AndrewKing]

HI,

Thanks for the info... Any Idea how much less towing cap with 3. 08 Gearing Vs 3. 55 gearing?... . Would it be a straight percentage reduction? In this case say about a 13. 2% reduction in towing ability because of the higher gearing?

Andrew

 

[EZeis]

I'd check the ratio first. You can count teeth or just count how many times the driveshaft turns for one turn of the wheel. I don't know how much of a reduction 3. 08 gears would be. 3. 08 gears would make it very slow to get up to speed and a dog on hills. If you do have 3. 08 gears, I wouldn't tow very heavy. If truck does have 3. 08 gears, would be a good on fuel for highway trips and a daily driver.



Earl

 

[Philip]

I have 3:08's in my truck. When I tow I limit it to no more than 12K. You will be slow on take off. When you see a hill coming up. "Stand on it" before the hill. LOL