jeremysmith71
Member
- Joined
- Nov 5, 2009
- Location
- Cameron
I have a 85 blazer with 8in lift and was wondering what degree of shim to use on the rear axle? I am eating up u-joints because of the angle. Your input would be helpfull thanks
axle shims
- Thread starter jeremysmith71
- Start date
Tom@Hilltop_Machine
Well-Known Member
- Joined
- Mar 31, 2005
- Location
- Rural Retreat, VA
Take an angle measurement as it sits, then rotate the axle up so the pinion points straight to the t-case and then take that angle measurement. Subtract the two and you know what degree shims you need.
Tom@Hilltop_Machine
Well-Known Member
- Joined
- Mar 31, 2005
- Location
- Rural Retreat, VA
Also I think you can only get shims up to 8 degrees. If your angle is greater than that I would cut off the exsisting perches, set the correct angle, then weld on new ones.
99ncxj
Well-Known Member
- Joined
- Sep 23, 2006
- Location
- Aliso Viejo, CA
This all depends on what type of rear shaft you are running.
Double cardan shaft, point the pinion directly in line with the driveshaft (no angle at U joint)
Single cardan shaft, set pinion angle perpendicular to output shaft on T case. With that much lift, you should be running a Double cardan style. If so, do like above post says and measure what degree shim you will need to achieve proper angle.
Double cardan shaft, point the pinion directly in line with the driveshaft (no angle at U joint)
Single cardan shaft, set pinion angle perpendicular to output shaft on T case. With that much lift, you should be running a Double cardan style. If so, do like above post says and measure what degree shim you will need to achieve proper angle.