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12" suspension lift 84' chevy k30

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K30Nils

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Hey Guys,

I Don't Know if this is the right Forum but I tell you my questions...delete if it's wrong.


I am Nils from Germany and I have got a few questions for you. We want to install a 12" suspension lift into a 1984 Chevy K30. Now we are facing problems with the bending-angle of the frontal cardan shaft from the distributing transmission to the differential. The angle is too large, so that the u-joints have contact. The transmission is already lowered by 4 cm (about 1.6") and the front axis is slightly slanted. But that is not yet sufficient. As I noticed that many of you raised their trucks with 12" (or larger) lift , I hope you can provide me some help with the problem. What options are their to guarantee smooth running of the cardan shaft and the u-joints? Axis is original Dana 60.

Thanks you, kind regards,

Nils
 
Your best guarantee would be to go to a company like High Angle Driveline and get one of their high angle double cardan driveshaft assemblies. His parts aren't cheap but he'll have what you need.
 
There's not many guys here running that much lift because of parts and function issues like you are describing.

8inches is really the point where geometry starts getting ridiculous. Plus at 8in you can fit 40in tires with not drastic trimming.
 
K30Nils said:
Hey Guys,

I Don't Know if this is the right Forum but I tell you my questions...delete if it's wrong.


I am Nils from Germany and I have got a few questions for you. We want to install a 12" suspension lift into a 1984 Chevy K30. Now we are facing problems with the bending-angle of the frontal cardan shaft from the distributing transmission to the differential. The angle is too large, so that the u-joints have contact. The transmission is already lowered by 4 cm (about 1.6") and the front axis is slightly slanted. But that is not yet sufficient. As I noticed that many of you raised their trucks with 12" (or larger) lift , I hope you can provide me some help with the problem. What options are their to guarantee smooth running of the cardan shaft and the u-joints? Axis is original Dana 60.

Thanks you, kind regards,

Nils
Click to expand...


your making the front angle WORSE by lowering the t-case... put it back to stock and invest in a nice 1410 shaft from HAD...
 
Automatic or manual tranny?

These years of trucks and older using the manual tranny use an extremely short front driveshaft and that will result in the angle being more severe than if it was running an automatic tranny.
 
first let me say hello and welcom to ck5

as said ditch the tcase drop .

call http://www.highangledriveline.com/

or if at all possible divorced transfer case with 2wd tranny . this helps a bit . but still going to need lots of work .

i am working on a truck now thats a 1/2 ton frame with divorced tcase with a 12" lift streched another 4" and still have to get custom shafts to make it correct.
 
Hey Guys,

First thanks for your answers.....and please excuse my bad english.

A little bit more informations...

The truck have a 5.7 ZZ4 engine built from chevy Performance and the transmission is a Th400 automatic with Np208.

We are planing to install the 12" suspension lift, a 3" bodylift and 46" mickey thomson Tires.

The bending-angle of the rear cardan shaft is okay by lowering the tcase and tilt the rear axle.

Have someone of you a Page with products of shafts I need and maybe they Shop to:bow: Germany?

And big thanks for welcome
 
Last edited:
K30Nils said:
Hey Guys,

First thanks for your answers.....and please excuse my bad english.

A little bit more informations...

The truck have a 5.7 ZZ4 engine built from chevy Performance and the transmission is a Th400 automatic with Np208.

We are planing to install the 12" suspension lift, a 3" bodylift and 46" mickey thomson Tires.

The bending-angle of the rear cardan shaft is okay by lowering the tcase and tilt the rear axle.

Have someone of you a Page with products of shafts I need and maybe they Shop to:bow: Germany?

And big thanks for welcome
Click to expand...


Im sure HAD will probably ship anywhere just a matter of money.

http://highangledriveline.com/
 
High Angle Driveline, as mentioned, is good.

There's also Tom Woods, http://www.4xshaft.com/ which sells parts and assemblies, and has a bunch of good information on how to measure and what fits and such.

That should help figure out what you need.

-- A
 
yep, either call one of those shops or send them an email if you aren't comfortable over the phone.

The reason folks say don't drop the "transfer case" (or T-case for short) is because it actually tilts the front output UP. So it may get closer to the front axle, but puts MORE angle on the front driveshaft's joint.

If you are running a 1350 or 1410 rear CV driveshaft, you shouldn't need to drop the T-case. Just point the axle pinion AT the rear output (or 1-2 degrees down). But all that stuff is on those websites, better explaining with pictures.

And by the way, your English is far better than most people I work around.:thumb:
 
Hey guys,
Thanks a lot for your help. Tomorrow I Call Tom Woods Shop for more informations about the High angle driveshaft. I thinks thats the right Part for the Projekt we want to build. I'll keep you up to date if there is any news about the project.

Greetings from Germany
 
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