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Hmmm never heard of it... everyone I've seen and everything I've read says 3.31s , I thought everything on the net was true..... lol
Thanks for the insight.... didn't know that
Cheapthrills wrote:Hmmm never heard of it... everyone I've seen and everything I've read says 3.31s , I thought everything on the net was true..... lol
Thanks for the insight.... didn't know that
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Don't look at me... I only know the little I deal with first hand. Though I would have thought 272 would be their standard towards the end as they were looking to eek out whatever mpg and emissions help they could. Seems like the lower gears would go with a tow package? Maybe more can chime in to offer some clarification??
I thought they made 3.31 standard and the only diff was receiver hitch or not with 7 pin plug... and the fuel savings came in with the severe differences in tune depending on where vehicle was being shipped to dealer... I VERY WELL COULD BE WRONG
Xplitive wrote:Trying to determine what gears are in my '89 waggy. 31" tires seems to like 60 mph cruise which is probably closer to 65 mph actual.
Tag on rear end reads
top: 53004028
bottom: looks like a "7" 2 605329-2 so 72 605329-2
There's a good chance the "72" on the bottom row has a "2" in front of it. My 1988 axles had a "3 31" on the second row and 3.31 gears.
Easiest way to confirm the gear set in the axle is to raise both rear tires off the ground and spin the driveshaft. Make sure both tires are spinning. Count how many times the driveshaft spins for one full tire rotation. If it's 2-3/4 then you have 2.72 gears. If it's about 3-1/4 then you have 3.31.
SparkyB wrote:I thought it was 2.72 standard and 3.31 with high altitude or towing packages? My 88 has 2.72
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This guy takes the cake.
OP you probably have 2.72's. Tell us whether it was sold in high altitude or low altitude and whether or not you have the stock transmission cooler and we can know for sure.
Don't have a clue to where it was sold originally. It does have, and they appear added on, trans cooler, a era correct curt class iv hitch and correct trailer wiring set up (finned aluminum heat sink). Looks like I'm jacking this thing up and rotating the wheels.
Erik
1989 GW, 31s on rancho front and general spring rear
Xplitive wrote:Don't have a clue to where it was sold originally. It does have, and they appear added on, trans cooler, a era correct curt class iv hitch and correct trailer wiring set up (finned aluminum heat sink). Looks like I'm jacking this thing up and rotating the wheels.
The emmisions tag under the hood should say something along the lines of "sold below 4,000 feet" or "sold above 4,000 feet". But that all says 2.72 to me!
found the matching tag on the front axle under some grim, numbers are the same but the front ends in -1 and the rear ends in -2 so either consecutive units or signifies front (1) and rear (2). definitely no 2 in front of the 72, i.e. doesn't appear to be anything on an '89 that clearly states 2.72 or 3.31 (although I should feel around for another tag under the grim).
Think this rig does really have only 96K on it from the paperwork.
Erik
1989 GW, 31s on rancho front and general spring rear