Suspension work finally happening this week. After a lot of research I went with Skyjacker springs, Bilsteins 5100s in the front and KYBs in the rear. Shocks were on Amazon, springs from Skyjacker, free shipping all around.
The reasons I am pulling the
4" Rough Country lift is because of the awful shackle angles and its just taller than it needs to be, essentially line to line with my garage door. At the start of this thread there is a photo of how bad my rear shackle angles are, just totally over arched. There is also a thread of me asking questions on them and awful advice from Rough Country. They could easily swing the wrong way and basic force vectors would suggest the shackle is more in compression when I hit a bump, transferring the load into the truck, than swinging as it should. The fronts are rock hard but the geometry is much better. I read the shocks I have provide are very firm, which they dont need to be.
(edit: they are)
Skyjacker is made in the USA and
this article had some great photos of them installed. Maybe thats too much shackle angle but oh well, at least it is not going to invert. (
mine did not have that much angle, and should break in nicely) Their customer service has been great, both via Facebook messenger and when Ive called them.
On the shocks, this
quote from Downey was the basis for my thinking.
Dave (DSB345), I recommend something very velocity sensitive (like Bilsteins) for the front, and something very soft for the rear (like Doetsch-Tech MV-12's, that are no longer available). Nothing is happening at your rear end, no engine weight/no pounding, so the softer the shock the better the ride on and off road.
I went with the recommended Bilsteins in the front and some replacement rear shocks by asking KYB what they had that was the same but longer compared to the stock length shock.
I think they are from a T100. Cheap and made in Japan. My 1970 still has the shock bolts on the axle so I may end up getting skid plates with shock bolts... or not. We will find out.
Dimensions - KYB Americas - https://www.kyb.com/resources/technical-information/dimensions/
343403 25.11 14.96 10.15 X X - E1 E1
344090 22.95 14.09 8.86 X - - E1 E1
Same ends with more stroke, should work fine for my 2.5" lift in the rear.
My goal has been a better ride, and for that reason I considered going back to rubber bushings, but since I wanted to reuse the greaseable hardware,
I decided to look into the differences in Poly. Turns out Energy suspensions are the hardest and since this is not a track car, I dont need to err on the side of more road feel.
Since these came Monday instead of Friday last week, I did not get them installed last weekend. I got tired of looking at them and took them apart to paint and lube them up. I will say it looks like they were assembled and then painted, probably not unique to skyjacker based on some other threads.
More to come