What degree shim?

[DuckTruck]

I installed a 4" lift on my '84 CUCV. It has the 4" blocks in the rear. Now my rear driveshaft is a bit short and the pinion angle needs to be corrected.

Thus, my question...what degree of shim do I need for my application?

Thanks in advance,

DUCK

 

[Hogback Fabrication]

Is it a Blazer or pickup?

Either way, there is no way to tell you what shim you need and it will have a minimal impact on making your driveshaft long enough.

Here is a good explanation of how to determine what degree shim you might need.

 

[DuckTruck]

It's a K5. Thanks for the response and for the link.

DUCK

 

[1BEATK5]

go to harbor frieght and get an angle meter. they are under $10

 

[88jimmy4x4]

my guess would be 6deg, thats what I used

 

[DuckTruck]

That's what I needed to know.....thanks man.

LAW

 

[DuckTruck]

my guess would be 6deg, thats what I used

Since you have used this exact shim, how much would you say (in inches) did it push back in the driveshaft yoke?

LAW

 

[88jimmy4x4]

I didnt measure a before and after on how much the driveshaft came in/out, I was mainly concerned with vibes.

here is my angle after the 6deg shim...again you need to measure to make sure what size you need.