97 Expy Performance
Posting Guru
Joined: Sep 2002
Posts: 1,264
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From: North Carolina
97 Expy Performance
Transfer case was changed, they removed the 2HI function from it. It turned into a A4WD system only.
I think thet they changed the heads on the 99 to bump the horsepower. Hope this helps!
I think thet they changed the heads on the 99 to bump the horsepower. Hope this helps!
Senior User
Joined: Feb 2003
Posts: 369
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From: Bronx, New York
97 Expy Performance
I'm not sure if this is the only change, but they switched to a different intake manifold in 99. The new one is made of a composite material, I believe, and of course, it will not retrofit onto the older motor. The ports will misalign.
Postmaster
Joined: May 2002
Posts: 3,028
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From: Annapolis, Maryland
97 Expy Performance
Yeah - they put the "PI" heads on the motors. If you check through the passenger side front wheelwell, you can see a number stamped on the head. Look for "PI". This means you've got the more powerful motor.
XXL
XXL
