from Alcurtice: Hey Chris, I'm installing a 3 link front suspension system on my 57 Willy's truck and I am running into some issues. How did you set up yours? If I put the lower links under the frame it appears they would be open to some rock crushing. My drive line is 48" long so I've been told I need to keep the lower link the same length as my drive line. this puts the lower link mounts way back in harms way if mounted under the frame. Inside the frame is not an option because of how the frame tapers in to the front and gets in the way. So I put mine tacked to the outside of the frame and up but this could cause problems with tire clearance. I would also like to see how you set up your third link. I hope all is well with you - you've been quiet lately. Maybe your having too much fun wheelin now that the weather is good.
from me: alcurtice--my lower mounts are welded to the inside of the frame to keep them as high as possible and away from the tires. If I remember correctly mine still stick below the frame and I think it's about 1 1/2". The length I'm thinking was like 52" center to center of bolt at the heim, but maybe they're 55". They're not as long as driveshaft if I was to measure from t-case to axle yoke and I don't know that dimension, but the NorthWestFab doubler pushes it back 8-9" I believe. I may have to do a carrier bearing. As for the bottom links being as long as the driveshaft I think it's a good idea to try and keep them close and close to the same angle if you can, but as much as I've read about doing these everyone usually says do the best you can.
I'll take some pics and unfortunately the jeep hasn't seen much progress, because I've been working on my brother's 53 cj3a, cousin's house, building a deck for my brother at his son's mother's house and it's been raining a ton here, not to mention my regular job.
front lower arms are 47" long and upper arm is 40-40 ½" long--center of heim to center of heim
frame mount for front lowers are inboard from inside side of frame 4 ½" to the center of the arm--I still need to tie them together using some tube going across the top of the tranny, because of them being 4 ½" from the inside of the frame
lower arm frame mount measures 1 ½" below the frame to the very bottom of the mount--bolt hole is about ½" below frame--I wanted it higher, but it just didn't give me the separation distance between lower and upper arm frame mounts.
the lower arm axle mounts are pulled from hooking the inside of the "C" to center--see pic for dimension
the upper arm axle mount on the passenger side is 14 ½" from hooking inside the "C" toward the pumpkin
the top of the upper arm frame bracket is aligned with the top of the frame
1979 ford dana 60 hi-pinion king pin--stock width
from me: alcurtice--my lower mounts are welded to the inside of the frame to keep them as high as possible and away from the tires. If I remember correctly mine still stick below the frame and I think it's about 1 1/2". The length I'm thinking was like 52" center to center of bolt at the heim, but maybe they're 55". They're not as long as driveshaft if I was to measure from t-case to axle yoke and I don't know that dimension, but the NorthWestFab doubler pushes it back 8-9" I believe. I may have to do a carrier bearing. As for the bottom links being as long as the driveshaft I think it's a good idea to try and keep them close and close to the same angle if you can, but as much as I've read about doing these everyone usually says do the best you can.
I'll take some pics and unfortunately the jeep hasn't seen much progress, because I've been working on my brother's 53 cj3a, cousin's house, building a deck for my brother at his son's mother's house and it's been raining a ton here, not to mention my regular job.
front lower arms are 47" long and upper arm is 40-40 ½" long--center of heim to center of heim
frame mount for front lowers are inboard from inside side of frame 4 ½" to the center of the arm--I still need to tie them together using some tube going across the top of the tranny, because of them being 4 ½" from the inside of the frame
lower arm frame mount measures 1 ½" below the frame to the very bottom of the mount--bolt hole is about ½" below frame--I wanted it higher, but it just didn't give me the separation distance between lower and upper arm frame mounts.
the lower arm axle mounts are pulled from hooking the inside of the "C" to center--see pic for dimension
the upper arm axle mount on the passenger side is 14 ½" from hooking inside the "C" toward the pumpkin
the top of the upper arm frame bracket is aligned with the top of the frame
1979 ford dana 60 hi-pinion king pin--stock width