Worth upgrading from 26 to 28 spline axles?
12-03-2004, 06:02 PM
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Car: Firebird
Engine: LG4
Transmission: Auto
Worth upgrading from 26 to 28 spline axles?
I want to get a posi and see they sell both 26 and 28 spline units for the same price. Is it worth upgrading from 26 to 28 spline axles? I know 28 is stronger, but at what level does 26 become insufficent and warrant an upgrade?
Thanx!
Thanx!
12-03-2004, 11:10 PM
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Car: cleanest '86 sport coupe around!!
Engine: 355ci twin 66mm turbos on e85
Transmission: built rmvb th400 w/ t-brake
Axle/Gears: 3.23
if you're buying a 3series posi you don't have a choice because it will only work with 28 spline axels....i wouldn't want to think you would go out and buy a 2 series posi.
12-05-2004, 08:02 PM
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Car: 77 Firebird
Engine: 454
Transmission: th350
Axle/Gears: 4.10
if you're buying a 3series posi you don't have a choice because it will only work with 28 spline axels....i wouldn't want to think you would go out and buy a 2 series posi.
12-06-2004, 11:52 AM
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Car: '86 Camaro, '02 WRX, '87 K5, '67
Engine: 350 TPI, 2.0turbo, 383 in the works, 289-4BBL, 232, A-head 4-cylinder
Transmission: T56, 5-speed, 700R4, C4, T176, semi-auto 2-speed
Axle/Gears: 3.73, 3.90, 4.88, 3.55, 3.54, 7.00
When are the 26 spline shafts inadequate? You could argue that they are inadequate for a bone stock car. I've seen plenty of them break over the years. I've also seen plenty with 150,000 miles on them and no problems.
There are no hard and fast rules for driveline parts. People break so called stout parts all the time, and others run so called weak parts and rarely if ever break them.
I tend to ere on the side of caution. When I rebuilt my rear I upgraded to 28 splines. Did I need to? Would it have lived? I don't know, but the truth is that I didn't want to find out.
There are no hard and fast rules for driveline parts. People break so called stout parts all the time, and others run so called weak parts and rarely if ever break them.
I tend to ere on the side of caution. When I rebuilt my rear I upgraded to 28 splines. Did I need to? Would it have lived? I don't know, but the truth is that I didn't want to find out.
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