Gear pattern check - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Moore87** · 07-02-2021, 07:37 PM

I know these threads are annoying.

Backlash is at 0.008” which is what’s scribed on the ring gear. 3.73 in the factory 12 bolt

**kwmech** · 07-03-2021, 01:40 AM

Looks like you hit the sweet spot to me

**Ol Blue K20** · 07-03-2021, 06:59 AM

Quote:

Originally Posted by kwmech

looks like you hit the sweet spot to me

x2

**YellowK5** · 07-03-2021, 11:54 AM

Hard to do better than that

TXgearhead67 · 07-03-2021, 12:03 PM

That's what yo want. Good job.

**MySons68C20** · 07-06-2021, 02:13 PM

I had mine in and out 24 times before I was happy with the pattern.
Looks perfect to me great job!

**Moore87** · 07-06-2021, 04:12 PM

Quote:

Originally Posted by MySons68C20

I had mine in and out 24 times before I was happy with the pattern.
Looks perfect to me great job!

I know what you mean. I was stumped on the backlash because my install kit had 0.006” shims, 0.012” shims and 0.024” shims. I didn’t get it figured out until I measured the thick interlocking pieces to make the right combo

Pinion depth was the shim I took off the old gear

**mongocanfly** · 07-06-2021, 08:45 PM

You done good.!!...let'er eat..!!

**Getter-Done** · 07-06-2021, 09:51 PM

A+

.

07-02-2021, 07:37 PM	#1
Moore87 Active Member Join Date: Dec 2009 Location: Waco, TX Posts: 102	Gear pattern check I know these threads are annoying. Backlash is at 0.008” which is what’s scribed on the ring gear. 3.73 in the factory 12 bolt Attached Images

07-03-2021, 01:40 AM	#2
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,387	Re: Gear pattern check Looks like you hit the sweet spot to me

07-03-2021, 11:54 AM	#4
YellowK5 Active Member Join Date: Jun 2021 Location: Rancho Cucamonga California Posts: 170	Re: Gear pattern check Hard to do better than that

07-03-2021, 12:03 PM	#5
TXgearhead67 Registered User Join Date: Sep 2017 Location: Carthage Texas Posts: 175	Re: Gear pattern check That's what yo want. Good job.

07-06-2021, 02:13 PM	#6
MySons68C20 Senior Member Join Date: Sep 2014 Location: Wenatchee, Wa Posts: 897	Re: Gear pattern check I had mine in and out 24 times before I was happy with the pattern. Looks perfect to me great job!

07-06-2021, 08:45 PM	#8
mongocanfly Post Whore Join Date: May 2015 Location: Alabama Posts: 14,581	Re: Gear pattern check You done good.!!...let'er eat..!! __________________ Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver

07-06-2021, 09:51 PM	#9
Getter-Done Senior Member Join Date: Dec 2009 Location: TN. Posts: 7,701	Re: Gear pattern check A+ . __________________ ________________________________________________________________________________________ ____________________________________________ 84 Chevy K-20 63 Impala (my high school car) http://67-72chevytrucks.com/vboard/s...Crew Cab Build



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