Backlash and contact pattern...
Thread Starter
Member
Joined: Aug 2007
Posts: 142
Likes: 0
From: Germany
Car: TransAM
Engine: 355SBC
Transmission: TH700R4
Axle/Gears: 3.23
Backlash and contact pattern...
Hi guys. Please take a look to this picture with my contact pattern. I think, it´s really nice. I bought a ring/pinion-kit from richmond gears. They said the minimum backlash should be 0.010". My service manual says between 0.004" and 0.006". At the moment, the backlash is 0.008". What do you think about that ? What should i do ?
http://www.bilder-hochladen.net/files/1eer-2f-jpg.html
http://www.bilder-hochladen.net/files/1eer-2f-jpg.html
Thread Starter
Member
Joined: Aug 2007
Posts: 142
Likes: 0
From: Germany
Car: TransAM
Engine: 355SBC
Transmission: TH700R4
Axle/Gears: 3.23
Re: Backlash and contact pattern...
Supreme Member
Joined: Jun 2006
Posts: 2,199
Likes: 1
From: West-Central
Car: 91 Trans am
Engine: built 360 TBI
Transmission: built 700r4
Axle/Gears: 10bolt/3.23
Re: Backlash and contact pattern...
Looks ok.
92 pontiac GM service manual: Backlash says between, 0.13mm and 0.23mm (0.005 inc and 0.009 inc) for all new gears.
I just took another look at the pic, I have them a little more centered if possible.
I also thighten the E break a little, by checking the contact pattern.
Here is the pic
92 pontiac GM service manual: Backlash says between, 0.13mm and 0.23mm (0.005 inc and 0.009 inc) for all new gears.
I just took another look at the pic, I have them a little more centered if possible.
I also thighten the E break a little, by checking the contact pattern.
Here is the pic
Last edited by thomas1976; Mar 6, 2010 at 04:09 PM. Reason: second look
Thread Starter
Member
Joined: Aug 2007
Posts: 142
Likes: 0
From: Germany
Car: TransAM
Engine: 355SBC
Transmission: TH700R4
Axle/Gears: 3.23
Re: Backlash and contact pattern...
I changed the pinion shims 12 times to get this contact pattern. Every time, i adjust the backlash, too. Finally, i used the stock shims on the right side and on the left side from the carrier to get the right backlash and this contact pattern. 
Today, i´ve seen, the service manual says, i should´nt use the stock carrier shims ! Why ?? I don´t understand ?? The shims looks great ! Will i´ve got any problems with these stock shims ????
Thank you !

Today, i´ve seen, the service manual says, i should´nt use the stock carrier shims ! Why ?? I don´t understand ?? The shims looks great ! Will i´ve got any problems with these stock shims ????
Thank you !
Thread
Thread Starter
Forum
Replies
Last Post
IROCZDAVE (88-L98)
Interior Parts for Sale
2
Sep 17, 2015 07:43 AM
dimented24x7
Transmissions and Drivetrain
7
Sep 17, 2015 06:58 AM





