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89 Sierra diff centres

Tech Talk for Suzuki owners.

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89 Sierra diff centres

Post by Durko1 »

Can anyone tell me if the front and rear diff centres of a 89 sierra are the same. If they are the same can the front be used in the rear as my rear diff is shagged and I have a spare front diff
Last edited by Durko1 on Fri Dec 19, 2008 8:06 pm, edited 1 time in total.
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Post by want33s »

They are the same ratio gears (3.7:1) but the side gears inside the centre are 26 spline rear and 22 spline front...
89 fronts are mostly 2 pinion whereas rears are 4 pinion.

Jas.
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Post by scooby_74 »

you can pull the side gears out of your rear diff and put them in your front. Means that you have a 2 pin rear centre, not as strong but seen it done heaps
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Post by Pinball »

Interesting...

wasn't aware of a difference, mines a late 89 and i believe they are the same... have had fronts fitted to my rear before, not that i did the job so unsure of mods required.

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Post by Gwagensteve »

NT sierras have 4 pin front and rear.

Early WT (plastic flares) have 4 pin front and rear.

Steel flare WT have 2 pin front.

Steve.
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