64SS427
Mar 24th, 09, 2:52 PM
I'm about to pull off the no hop bars I installed 10 years ago and get some brackets from UMI. I will need to install bushings in the upper ears of the rearend. I would like to use some solids, but can't seem to find any . Global west makes a nice set of adjustble ones, out of my price range. CE lists rear suspension bushings in solid, but sells them in sets of 4 makeing me believe they are for the lower arms, although I have not seen that specified. Am I going to have to nmake my own?
Devin
FerrariTruck
Mar 24th, 09, 3:01 PM
i believe all the bushings are same size
vrooom3440
Mar 25th, 09, 7:48 PM
Do NOT run solid bushings in the upper control arms!
There is a reason why you cannot find them. They would be a bad idea because they would not allow the movement required by the UCAs which must move in a horizontal as well as the expected vertical direction. These upper pivots need to be either rubber or a spherical bearing. Otherwise they will bind and limit rear suspension movement.
DET17
Mar 28th, 09, 1:34 PM
Do NOT run solid bushings in the upper control arms!
There is a reason why you cannot find them. They would be a bad idea because they would not allow the movement required by the UCAs which must move in a horizontal as well as the expected vertical direction. These upper pivots need to be either rubber or a spherical bearing. Otherwise they will bind and limit rear suspension movement.
Steve, are you referring to UCA's which have a spherical front mount (i.e. CurrieTrac uppers / Edelbrock clone uppers)? I discussed this point at length with Marc of SC&C, who insists AS LONG AS you have the johnny joints forward on all 4 rear arms, you can run poly rears, also in the upper position. I've got my 10 bolt sitting on the floor and getting ready to install the poly rear diff bushings (might have to go rent a press, they seem pretty tight even with bores cleaned out). I'm curious to hear your basis for your statement. Thanks.
Duane
vrooom3440
Mar 28th, 09, 5:43 PM
So spherical bearings like Edelbrock's and others are good. Poly is fine in the lowers and maybe in the uppers on one end with the other spherical. But there is a difference between solid and poly too. I specifically would not run solids and don't care for poly in the uppers.
Although I have to admit that the Hotchkis video of their all poly setup looks like it works.