gears officially go in

[rocknbronco]

Originally Posted by SpectorV

if you really wanted to be anal you should drive the car (EASY) until the gears in the back get hot and then let it cool off for about an hour, do this a few times and you should be good. I would change the fluid and inspect it to see if you have any major issues with metal comming off.

X2

[modular2valve]

Originally Posted by bbunt302

Break-In
Any overloading or overheating will cause the oil to break down and the ring gear and pinion will fail. A ring gear and pinion installation, especially a high numeric ratio with new bearings, can cause an excessive heat build up in the rear end and cause softening of the gear teeth and bearings if a break-in is not performed.
Break-in Procedure - All vehicles and all applications:
To break-in the installation, perform a run-in prior to driving with the rear wheels jacked up, operating at idle speed in high gear for a minimum of five (5) minutes. Then drive the vehicle 10 miles at a normal speed, let cool for one (1) hour and then repeat entire process again.
Notes for Special Use Vehicles:
Vehicles used for Towing:
Vehicles used for towing need approximately 200 - 300 miles of normal street driving before being used for towing.
Circle track race cars:
Make approximately 6 - 8 laps at slow speed, then let cool for 30 minutes, make 6 -8 laps more at slow speed, then 2 -3 laps at full speed, let cool again for 30 minutes.
Drag cars:
Drag cars need only an initial run-in since they are driven short distances and heat is not normally a problem with proper lubrication and backlash allowances.

thats what i do too...worked fine everytime.

[Justin]

So when they get done i should drive for 10 mins... then let it cool down then drive it again for ten mins and im done?

[rocknbronco]

To break-in the installation, perform a run-in prior to driving with the rear wheels jacked up, operating at idle speed in high gear for a minimum of five (5) minutes. Then drive the vehicle 10 miles at a normal speed, let cool for one (1) hour and then repeat entire process again.
thats what you wanna do

[Justin]

gears are in and holy **** it made a diffrence....only thing is i have to manually shift it till i can get a programed for them and get a speed calib

[rocknbronco]

Hey I would like that more myself glad your happy with em.

[Justin]

4.10s are in
Speedo Calib is in

Now how or what should i do to help firm up my shift points. or do yall have any suggestions on what i should do next?

[bluemustang]

Originally Posted by Justin

4.10s are in
Speedo Calib is in

Now how or what should i do to help firm up my shift points. or do yall have any suggestions on what i should do next?

Get a Shift Kit

[Justin]

I have a shift kit...not sure what kind.. was in the car before i got it.... I believe he said a valve body s/k

[bluemustang]

Only other way i know of making shift points firmer is threw a chip

[Justin]

i will prolly get one when i go to BR to meet up with Rob Gabe and Kyle