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9-bolt pinion depth....with 3.90:1 gears??

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Old 08-18-2003, 11:23 AM
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Car: 1989 Iroc-Z
Engine: 350ci SBC
Transmission: 700R4
9-bolt pinion depth....with 3.90:1 gears??

I need the pinion depth spec for the 3.90 gears in the 9 bolt BW rear.....please help...
Old 08-18-2003, 12:22 PM
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ede
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it differant for each gear set. it should be etched on the pinion and the back lash etched on the ring gear.
Old 08-18-2003, 01:02 PM
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Car: 1989 Iroc-Z
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Transmission: 700R4
its not
Old 08-18-2003, 02:10 PM
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ede
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then reuse whatever shim is under the pinion bearing now and there's a very good chance your back lash and contact pattern will be right, or at most only off a .001 or so on the shim.
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