12 bolt pinion shim

3 window · 05-31-2023, 09:04 PM

Thanks everyone. We’re on the right track for sure. I set it up with a .030 and based on the master housing depth of 4.670, it’s dead nuts on (pinion depth of 2.755 plus the thickness of the pinion head 1.915 equals 4.670).

Glenn Briglio · 06-01-2023, 06:46 AM

Quote:

Originally Posted by 3 window

Thanks everyone. We’re on the right track for sure. I set it up with a .030 and based on the master housing depth of 4.670, it’s dead nuts on (pinion depth of 2.755 plus the thickness of the pinion head 1.915 equals 4.670).

That's fine but pattern and backlash are what matter.

3 window · 06-02-2023, 08:15 PM

So here we are at .030 shim and .0075 backlash. This gear is used and from ‘66 so it’s got some miles on it.

Mark Yacavone · 06-04-2023, 11:03 PM

Don't know what you're doing with this car but it's probably a hair deep.
I'd try a .027-.028 if you're not in a big hurry. ;-)

3 window · 06-06-2023, 08:29 PM

Just drove it. Quiet as a church mouse. Thanks everyone.

05-31-2023, 09:04 PM	#1
3 window Junior Member Join Date: Jul 2016 Posts: 15 Likes: 0 Liked 3 Times in 2 Posts	Re: 12 bolt pinion shim Thanks everyone. We’re on the right track for sure. I set it up with a .030 and based on the master housing depth of 4.670, it’s dead nuts on (pinion depth of 2.755 plus the thickness of the pinion head 1.915 equals 4.670).

06-02-2023, 08:15 PM	#3
3 window Junior Member Join Date: Jul 2016 Posts: 15 Likes: 0 Liked 3 Times in 2 Posts	Re: 12 bolt pinion shim So here we are at .030 shim and .0075 backlash. This gear is used and from ‘66 so it’s got some miles on it. Attached Thumbnails

06-04-2023, 11:03 PM	#4
Mark Yacavone Veteran Member Join Date: Mar 2002 Location: Miles From Nowhere Posts: 7,815 Likes: 2,903 Liked 5,121 Times in 1,952 Posts	Re: 12 bolt pinion shim Don't know what you're doing with this car but it's probably a hair deep. I'd try a .027-.028 if you're not in a big hurry. ;-) __________________ "We are lucky we don't get as much Government as we pay for." Will Rogers

06-06-2023, 08:29 PM	#5
3 window Junior Member Join Date: Jul 2016 Posts: 15 Likes: 0 Liked 3 Times in 2 Posts	Re: 12 bolt pinion shim Just drove it. Quiet as a church mouse. Thanks everyone.