chrysler 8.25 swap setting pinion angle

[Newton]

I'm in the process of swapping in a chrysler 8.25 and trying to collect as much information as i can before i proceed with the swap can anyone share some advice on setting the right pinion angle and going about welding on the new spring perches?

[Tj1]

Our CV-less drive shifts like to be set up like this. Are you staying spring under? If you're setting it up spring over hopefully you got a set of anti wrap perches.

[xjrev10]

I just eyeballed mine. It points up a little bit. Never an issue. Not rocket science. But some make it that way.

[Newton]

Our CV-less drive shifts like to be set up like this. Are you staying spring under? If you're setting it up spring over hopefully you got a set of anti wrap perches.

 

I just eyeballed mine. It points up a little bit. Never an issue. Not rocket science. But some make it that way.

 

Thanks guys was yea I'm staying spring under  think I'm just gonna eyeball mine as well and see what happens from there

[Tj1]

Measure measure measure! Small tacks and lots of measuring. You don't need to bind springs or have the axle sticking out further on one side due to being off center

[64 Cheyenne]

 

Our CV-less drive shifts like to be set up like this. Are you staying spring under? If you're setting it up spring over hopefully you got a set of anti wrap perches.

 

I just eyeballed mine. It points up a little bit. Never an issue. Not rocket science. But some make it that way.

 

Thanks guys was yea I'm staying spring under  think I'm just gonna eyeball mine as well and see what happens from there.

 

 

Kind of like if it's a little screwed up, it's just like just a being a little bit pregnant.

Eyeball method is bad, especially if you weld it up, its not right, and the guy who knows how to use an angle finder/protractor just shakes his head and charges you twice for what you could have done proper the first time.

Angle finder costs less than $10...

[Newton]

 

 

Our CV-less drive shifts like to be set up like this. Are you staying spring under? If you're setting it up spring over hopefully you got a set of anti wrap perches.

 

I just eyeballed mine. It points up a little bit. Never an issue. Not rocket science. But some make it that way.

 

Thanks guys was yea I'm staying spring under  think I'm just gonna eyeball mine as well and see what happens from there.

 

 

Kind of like if it's a little screwed up, it's just like just a being a little bit pregnant.

Eyeball method is bad, especially if you weld it up, its not right, and the guy who knows how to use an angle finder/protractor just shakes his head and charges you twice for what you could have done proper the first time.

Angle finder costs less than $10...

 

 

How come no one has posted a write up on this so dumb fellows like me can follow and learn how to use the angle finder to do this the proper way??

[daking]

here is a good video. Keep in mind the Pinion angle will rotate up under acceleration. You want "prime" or best angle to be achieved under acceleration. So at static, it should be a bit lower then prime. 

 

 

[64 Cheyenne]

Good place to put your angle finder is on the vertical part of where the engine mounts to the tranny and the face of the pumkin, a casting web or depending on your rear axle.

[Jtrux]

Assuming you don't have a slip yoke eliminator, the above image is correct.

 

Measure the angle on the output of the transfercase (example: 6 degrees) and set the pinion the same.

 

On my vehicles, I always set the pinion 1 degree lower than the transfercase/tranmission output to compensate for suspension flex under acceleration/load.

 

Don't go crazy with that last part. 1 degree is enough. The idea being that when you're going down the road or accelerating, the suspension will allow the pinion to rotate up and put the driveshaft perfectly inline with the output of the transfercase.