96 LT4 4.10 Rear End Final Preperations for Install PART 2
Thread Starter
Burning Brakes
Joined: Nov 2008
Posts: 965
Likes: 28
From: Mt. Pleasant NC
96 LT4 4.10 Rear End Final Preperations for Install PART 2
Alright guys, I've got all the parts(I think) and just wanna make sure I've got everything in line for this 4.10 swap. I'm about to undertake this task but wanna make sure that I've got everything in line before I get in the middle of this and find out some small details that I never thought about.
Supplies on hand:
-P5007043(Part # for mopar gears...Viper gear)
-Corvette Axle 84-96 (Dana 3012K 1 112.0044): Deluxe InstallationKit - Corvette Axle 84-96
-POSI SERVICE PARTS Cluth Pack Part #SP 707018X(Drivetrain Specialists)
-4 oz bottle of GM rear end positraction additive
-2 quarts of BFM rear end gear oil
Again, this is a LT4 so its a 6 speed with a 3.45 factory. First off and foremost, am I missing any parts? Obviously, everyone is saying from previous posts that since its a 6 speed, that the only thing that will be off is the speedometer which is to be fixed by reprogramming the PCM? I'm still concerned and would think the VSS plastic gear would have to be cheanged to match the new rear end ration and tire size but I am getting mixed answers. Can anyone clarify this or advise me anything else I may need?
Supplies on hand:
-P5007043(Part # for mopar gears...Viper gear)
-Corvette Axle 84-96 (Dana 3012K 1 112.0044): Deluxe InstallationKit - Corvette Axle 84-96
-POSI SERVICE PARTS Cluth Pack Part #SP 707018X(Drivetrain Specialists)
-4 oz bottle of GM rear end positraction additive
-2 quarts of BFM rear end gear oil
Again, this is a LT4 so its a 6 speed with a 3.45 factory. First off and foremost, am I missing any parts? Obviously, everyone is saying from previous posts that since its a 6 speed, that the only thing that will be off is the speedometer which is to be fixed by reprogramming the PCM? I'm still concerned and would think the VSS plastic gear would have to be cheanged to match the new rear end ration and tire size but I am getting mixed answers. Can anyone clarify this or advise me anything else I may need?
Thread Starter
Burning Brakes
Joined: Nov 2008
Posts: 965
Likes: 28
From: Mt. Pleasant NC
Melting Slicks
Joined: Jul 2006
Posts: 2,151
Likes: 0
From: Strongsville Ohio
No plastic gear change. I had my gears done a couple years ago and they tuned it to the correct speed ect..
P.S...I hope you like the 4.10's more then I do, I wish I had 3.73 instead..I am tired or shifting that much ! Wakes the car up tho tell you that !
P.S...I hope you like the 4.10's more then I do, I wish I had 3.73 instead..I am tired or shifting that much ! Wakes the car up tho tell you that !
Thread Starter
Burning Brakes
Joined: Nov 2008
Posts: 965
Likes: 28
From: Mt. Pleasant NC
Alright, well that seems to be the word on the streets as far as the tune to get correct speed. I know I did my 78(of course no PCM) and I had to change the gear in the VSS. Yea, on my 78 I went from the factory which was like a 3.11 or so to the 3.73...and let me tell you, its like an entirely different car from what it use to be. As far as driveability, its not a daily driver so I wont have to worry about the continuous shifting...
Thread Starter
Burning Brakes
Joined: Nov 2008
Posts: 965
Likes: 28
From: Mt. Pleasant NC
Well I had originally thought about it but then decided that knowing my luck, I'd screw something up royally so I have acquired all the parts(I think) and am putting the torture in someone elses hands so if theres a mishap, its outta my hands...
Race Director
Joined: Apr 2000
Posts: 15,344
Likes: 4,009
From: Texas
You can correct the speedo two ways: Programming or by changing the plastic gears. Here's why people don't change the gears....of all the gear combinations that GM has available, none of them work with the 4.10s. With all of them the speedo will be off. Years ago, a couple aftermarket suppliers made/offered the custom VSS gear that was needed (LPE was one of them for instance). However the gear was $80...if it was still available I bet it would be over $100 today.
So there you have it. If you can find the aftermarket VSS gear and want to pay for it, you can swap the VSS gear. Programming is the quickest and easiest.
So there you have it. If you can find the aftermarket VSS gear and want to pay for it, you can swap the VSS gear. Programming is the quickest and easiest.
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Race Director
Joined: Apr 2003
Posts: 17,700
Likes: 1,667
From: moraga ca
Wise decision. This project should be tackled by someone who has past experience in setting up gears. It would not be worth it to buy the tools and indicators for a 1 time setup not to mention the experience factor.
Melting Slicks
Joined: Dec 2004
Posts: 2,687
Likes: 1
From: Manteca CA
Since I changed to the 4:10 many times I drive my car as a 3 speed. Start off in 2nd to 4th and into 6th. This works well on level ground.
Race Director
Joined: Apr 2000
Posts: 15,344
Likes: 4,009
From: Texas
Thread Starter
Burning Brakes
Joined: Nov 2008
Posts: 965
Likes: 28
From: Mt. Pleasant NC
Thread Starter
Burning Brakes
Joined: Nov 2008
Posts: 965
Likes: 28
From: Mt. Pleasant NC
Instructor
Joined: Feb 2010
Posts: 106
Likes: 0
From: deltona fl
where did u buy the gears and install kit? does the viper 4.10s use a crush sleeve or shims like original? can you reuse the factory pinion yoke? if you can, pm me please. i need to order gears and a kit asap as my diff is sitting at the shop awaiting the right ones. thanks
Thread Starter
Burning Brakes
Joined: Nov 2008
Posts: 965
Likes: 28
From: Mt. Pleasant NC
where did u buy the gears and install kit? does the viper 4.10s use a crush sleeve or shims like original? can you reuse the factory pinion yoke? if you can, pm me please. i need to order gears and a kit asap as my diff is sitting at the shop awaiting the right ones. thanks
I bought the gears from Chrysler, the clutches from drivetrainspecialists and the install/rebuild kit from Raetech. I believe the new gears use a crush sleeve. I am unsure about the pinion yokes. That might be a good question for starting another forum unless someone chimes in on an old post? For what its worth, I have listed all part numbers and who I ordered from in my initial post if you decide to go this route...
Thread Starter
Burning Brakes
Joined: Nov 2008
Posts: 965
Likes: 28
From: Mt. Pleasant NC
Racer
Joined: Aug 2008
Posts: 457
Likes: 2
I 2nd that.I tried changing gears one time in my car about 12 yrs ago,and did'nt go to good.Luckily I knew someone that was able to do it for $300,minus the parts.Some people wanted crazy prices to change the gears.Hopefully you did'nt break the bank.