Transmissions and Drivetrain Need help with your trans? Problems with your axle?

WHAT SPLINE GEAR SHOULD I GET

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Old Feb 11, 2009 | 08:36 PM
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supreme4life's Avatar
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WHAT SPLINE GEAR SHOULD I GET

THIS MAY BE A STUPID ? im about to order a posi unit. which is 26 spline. but the motive gears say 27 spline. is that right the right gear?
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Old Feb 11, 2009 | 09:45 PM
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From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: WHAT SPLINE GEAR SHOULD I GET

27 spline is the splines on the pinion. All 7.5" have a 27 spline pinion so the driveshaft yoke will fit.

26 and 28 spline carrier (posi) is the amount of splines on the axles. 82-89 third gens with a 10 bolt have 26 spline axles. 90+ are 28 spline axles however you can upgrade the older cars to 28 spline with axles from a 90-92 or aftermarket axles and a 28 spline posi.
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Old Feb 12, 2009 | 12:18 AM
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Re: WHAT SPLINE GEAR SHOULD I GET

Thanks.
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