30 spline vs 33 spline?
01-25-2006, 11:05 PM
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Car: 91 Z28, 86 Z28
Engine: 5.7 TPI, 5.0
Transmission: 4L60E/transgo shift kit
30 spline vs 33 spline?
Well here’s my problem. I bought a 12 bolt Strange rear end late December from Spohn. But they just notified me that Strange have been out of 33 spline Eaton posi units for a month and won’t get another shipment in until late February. Strange has the 30 spline on hand but should I wait for the 33 spline? Please help me decide! 
01-26-2006, 07:48 AM
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Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
If you're making less than 800 hp then 30 spline axles are fine.
01-26-2006, 11:54 AM
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Car: 91 Z28, 86 Z28
Engine: 5.7 TPI, 5.0
Transmission: 4L60E/transgo shift kit
Well the guy from Spohn said that he made a mistake and they don't offer the 30 spline with Strange. So I guess I'm going to have to wait. 
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