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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: howlinwolf on December 15, 2009, 03:54:35 pm

Title: Howlin's drivetrain repair thread
Post by: howlinwolf on December 15, 2009, 03:54:35 pm
exactly as it says. i need to know the size of the nut that goes on the pinion shaft. It fell off, and while there is damage, there are no broken teeth only wear. therefore i am going to replace the crush sleeve, bearing, and seal and hope for the best until i can get the beretta fixed then start on the truck.  Its a 12 bolt seems like the 9and whatever ring gear.
Title: Re: Size of the Pinion nut.
Post by: VileZambonie on December 15, 2009, 04:48:32 pm
Just order one by your application when you order your other parts.
Title: Re: Size of the Pinion nut.
Post by: howlinwolf on December 15, 2009, 05:47:44 pm
i keep gettin told they cant get it
Title: Re: Size of the Pinion nut.
Post by: VileZambonie on December 15, 2009, 05:55:14 pm
http://www.markwilliams.com/detail.aspx?ID=839
Title: Re: Size of the Pinion nut.
Post by: Captkaos on December 15, 2009, 06:17:10 pm
Where are you getting all your stuff from?  A pinion nut should be readily available from anyone that sell those type parts.
Title: Re: Size of the Pinion nut.
Post by: howlinwolf on December 15, 2009, 09:56:08 pm
a win for vile. thank you very much.
Title: Re: Size of the Pinion nut.
Post by: howlinwolf on December 16, 2009, 08:39:37 am
if i have a 12 bolt rear end how many inches is it???
Title: Re: Size of the Pinion nut.
Post by: Captkaos on December 16, 2009, 03:02:17 pm
Inches?  as in what?  The diameter of the ring gear?
Title: Re: Size of the Pinion nut.
Post by: howlinwolf on December 16, 2009, 05:16:58 pm
no i meant the size of the rear. but its like 8.875 correct? and what years offered 3.23:1 ratio
Title: Re: Howlin's drivetrain repair thread
Post by: Captkaos on December 16, 2009, 06:02:24 pm
12 bolts are 8.875"
10 bolts are 8.5"

3.23 gears were use for the 81-87(91) trucks
Title: Re: Howlin's drivetrain repair thread
Post by: howlinwolf on December 18, 2009, 03:26:40 pm
my truck is a 78 Chevy, but the rear has been redone, but the front is all original. this truck was bought new by my grandpa. would 3.73 and 3.23 fight very much when in four wheel drive.  I never noticed it, but i haven't driving it in 4 wheel much.