Re: Towing specs for a 1998 gmc 1500


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Posted by Ben (64.121.48.151) on 10:30:58 09/15/07

In Reply to: Towing specs for a 1998 gmc 1500 posted by Paul

Need more info.

Diff ratio (actual, not the glove box code). If used the previous might have changed it. Roll the vehicle one tire rev using the valve stem as a datum.

Have a length of string taped to the drive shaft.

Count the whole turns and the fraction. That is the diff ratio.

Over sized tires will effectively change the diff ratio. What size tires?

Suspension lift will increase the drive line angle, so robs power delivered to the pavement. Is your's lifted?

Does your truck have the tow package? If not, it's not going to do well with anything over 3K lbs.

I'll look up the spec sheet later



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