2 piece drive shaft angle help

[Hottrucks]

my truck is bagged with a C notch ,and 1" blocks ... the DS angle seems way out of wack so I need solutions..a 1 piece is out for now...I was looking for ideas related to moving the carrier and/or axle wedges....I figure someone must have had this issue before

Thanx
Jeff

[Longhorn Man]

if it doesn't bind, make noise, or shimmy, then you are probably ok. A one piece would most likely be worse too.

[Hottrucks]

any thought on raising the carrier in the x member and an axle wedge

[dwcsr]

you need to find out just how far out it is. put an angle gage on the rear ujoint flange. Shims should do it but you will need to pick a height at which you want to set the angle at. usually ride height make it within 2 degrees of the trans tail shaft.

[Hottrucks]

Originally Posted by dwcsr

you need to find out just how far out it is. put an angle gage on the rear ujoint flange. Shims should do it but you will need to pick a height at which you want to set the angle at. usually ride height make it within 2 degrees of the trans tail shaft.

thanx Dave I'm not sure how far out it is??? I think that being 2 piece I'm going to have issues.. the u joint flange is about ( guessing) 4" higher than the carrier....if I raise the carrier then I'm worried about the angle from the trans to carrier and going in to the trans..If I raise the tail shaft then my engine and carb flange will be off???? Rolling the diff is the easy part..

If I HAVE to go to plan B is there a drive shaft that works to convert it to 1 piece...th350 to 12 bolt...as much as I can't afford it right now the small drive shaft/u joints scares me with the new prostreet tires 3:73's and 350 plus hp...I have a spare 2 piece from a parts truck that I was going to keep around just incase but I would rather not worry if I'm at the strip or traffic light??

on a side note if I go to 1 piece is there any issue with the 1 piece hitting the x member where the carrier is now???

Thanx
Jeff

you can see in this pick that the pumpkin is vey close to the X memeber

[Slick67]

Install the carrier bearing upside down. It is somewhere in the suspension area. It may not get it perfect, but closer!

[Hottrucks]

thanx Slick I'll see if I can find it any ideas what the post was about??

[Hottrucks]

found it thanx

http://67-72chevytrucks.com/vboard/s...arrier+bearing

[Slick67]

Cool!

[brad_man_72]

1310 ujoints ar good for well over 500 hp, if you have decent spicer or neapco joints, not that parts store precision junk.

[fixit-p]

Originally Posted by Hottrucks

found it thanx

http://67-72chevytrucks.com/vboard/s...arrier+bearing

I posted in that thread this afternoon the trick with 2 piece drive-lines is to set drive-line #1 to where the u-joint #1 out of the trans has a ~1 - 1.5* true operating angle, if the trans is down 3* set the drive-line down 4* (4*-3*=1* true operating angle) now the center-line of the pinion needs to be parallel with the center-line of the intermediate drive-line and not the trans center-line in this case 3* up. That will ensure u-joints 2 & 3 have the same operating angle. Check around page 10 here>> http://www2.dana.com/pdf/J3311-1-DSSP.pdf

On a side note I just re-read your thread and see you asked or considered a one piece. With a one piece you would set the pinion parallel with the transmissions center-line which in my example was 4* down so the pinion would be set at 4* up. Just 1* difference you don't gain anything, you loose the flexibility of the two piece and would probably be at safe critical speed of the drive-line.

[Hottrucks]

Single Plane and Compound Universal Joint Operating Angles
There are two types of universal joint operating angles: Single Plane and Compound.
Single Plane
Single Plane angles occur when the transmission and axle components are in line when viewed from either the top or side, but
not both.
Determining the universal joint operating angle in an application where the components are in line when viewed from the top, but
not in line when viewed from the side, is as simple as measuring the slope of the components in the side view, and adding or
subtracting those slopes to determine the angle. (See Fig. 3)
These angles should be small and equal within 1 degree.
The most convenient way to determine universal joint angles in the side view is through the use of a Spicer Anglemaster™ or a
bubble type protractor.
Using an Anglemaster or a bubble protractor, record inclination angles of drivetrain components. Set Anglemaster or protractor
on machined surfaces of engine, transmission, axle, or on machined lugs of transmission and axle yoke(s).
Note: Universal joint angles can change significantly in a loaded situation. Therefore, check vehicle loaded and unloaded to achieve
the accepted angle cancellation.
Figure 3
Example:
Engine-Transmission Output 4°30’ Down (1)
Main Driveshaft 7°00’ Down (2)
Input 1st Rear Axle 4°00’ Up (Input Shaft Nose Up) (3)
Output 1st Rear Axle 4°00’ Down (4)
Inter-axle Shaft 7°00’ Down (5)
Input 2nd Rear Axle 4°15’ Up (Pinion Shaft Nose Up) (6)
Note: If inclination of driveshaft is opposite connecting component, add angles to obtain the universal joint operating angle.
Angle a = (2) - (1) = 7°00’ - 4°30’ = 2°30’ (2.50°)
Angle b = (2) - (3) = 7°00’ - 4°00’ = 3°00’ (3.00°)
Angle c = (5) - (4) = 7°00’ - 4°00’ = 3°00’ (3.00°)
Angle d = (5) - (6) = 7°00’ - 4°15’ = 2°45’ (2.75°)



Ok I read it but I think its in turkish???