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11-16-2007, 04:03 PM
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#1 |
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On a budget like Fred Sanford
Join Date: Oct 2005
Location: Topeka, KS
Posts: 2,031
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8.5" 10 bolt spline count
What year did the 8.5" 10 bolt switch from 28 spline axles to 30 spline? I know it was sometime in the 80's, but no idea what year. I need to know what my '85 came with.....it's about time for a locker.
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'85 Silverado swb: 383 stroker, 10.5:1, vortec heads, 232/238 roller cam, RPM air gap, performer 750 carb, stainless longtubes, 3" duals/super 44's, T56/4.11 383ci build / exterior refresh thread '98 Camaro z28: 370ci twin turbo 370ci build '01 Tahoe LT 4x4: 5.3, longtubes/ory, magnaflow duals, custom tune....wife's DD |
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11-17-2007, 10:28 PM
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#2 |
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Registered User
Join Date: May 2003
Location: Shreveport LA
Posts: 3,170
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Re: 8.5" 10 bolt spline count
An '85 would have come with 28-spline axles. The 30's didn't show up until '88 or '89.
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11-17-2007, 10:33 PM
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#3 |
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Registered User
Join Date: Dec 2006
Location: Earth
Posts: 239
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Re: 8.5" 10 bolt spline count
my 86 had 28 spline, I upgraded to the 30 spline when I rebuilt it.
Duro
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-1986 K10 LWB, 350 HD,TH400 3.08, 30 spline 10 bolt, with an Auburn Posi, 31" tires All original, second owner truck -1979 Monte Carlo, 350, 200r4, 3.73 posi -1987 GT T-top Mustang - slow moving project |
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11-18-2007, 09:44 AM
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#4 |
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On a budget like Fred Sanford
Join Date: Oct 2005
Location: Topeka, KS
Posts: 2,031
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Re: 8.5" 10 bolt spline count
Sweet, thanks guys!
__________________
'85 Silverado swb: 383 stroker, 10.5:1, vortec heads, 232/238 roller cam, RPM air gap, performer 750 carb, stainless longtubes, 3" duals/super 44's, T56/4.11 383ci build / exterior refresh thread '98 Camaro z28: 370ci twin turbo 370ci build '01 Tahoe LT 4x4: 5.3, longtubes/ory, magnaflow duals, custom tune....wife's DD |
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11-18-2007, 12:29 PM
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#5 | |
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Registered User
Join Date: Jan 2007
Location: Cape Cod
Posts: 69
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Re: 8.5" 10 bolt spline count
Quote:
Thanks Nick |
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11-18-2007, 02:30 PM
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#6 |
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Registered User
Join Date: Oct 2007
Location: Edmonton, Alberta
Posts: 26
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Re: 8.5" 10 bolt spline count
I'm also wondering this. I have 3.73 gears from my 2001 silverado that i want to put into my 83 sierra. What would i have to change to make it work? Theyre both 10 bolt.
__________________
'01 Silverado ECSB 4x4 True Flow - Magnaflow - Black Bear Tune - 35" BFG A/T - 4.56 Auburn - DD / Thug Ride '83 Sierra RCSB 2wd 350 Under construction - Project |
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