Good looking rigs! Really impressed with the work you've put into both of them. Didi read that right and you have 800lb springs on the front coil overs? I think the factory ones on my F150 are only 630lb ones, lol. How are you liking the King Bump Stops? I'd love to go full King setup all the way around but the budget just isn't there for it so i'm going Fox without the resi's. Really digging the rigs though, keep up the kick ass work!
Coilovers in the GMC has been a bit of an experiment/cluster fsk tbh, my partner ended up breaking one on our last trip so we had to stick the factory springs and standard shock back in while we get ready for the next stage in that truck.
The next stage for the front is to:
- Cut the factory spring perch off and weld on some coil over towers from ruffstuff specialties
- find a better spot for the limit strap clevis
- put an 8" travel coilover shocks in, we're looking at Kings for this stage. Ton of money but worth it given how hard she drives this thing
- add better bumpstops to the front (looking at hydro bumps for this, as well...)
Then. When we get all that done to the front... we'll have to tackle the rear.
At this point she just has a small block and an AAl back there. I'd like to replace the spring pack or go with one of those Deaver mini-pack things at some point, but who knows. We'll be re-doing the rear shock mounts, mounting locations and some shackle stuff as well but as always its a trade off between performance, load capacity, how much work we want to put in.
The downside to all of this it'll be a lot of money and fab work, but its also a learning experience and should be a lot of fun to get there. For the front springs... The stock control arms have the spring/shock mount fairly far inboard so the shock motion ratio ends up being fairly low for the amount of wheel travel we get out of it and it ends up requiring more dampening force and higher spring rates to support the trucks weight because of the larger moment of the control arm. I haven't gotten around to it yet, but I'm going to model the front suspension of this truck in CAD and play with it a bunch and see if i can get a better idea of the dynamics and forces that the suspension will see through its range of travel and maybe give me a better starting point for designing/sketching up some new lower control arms... So far based on what we've looked at for numbers with the control arm length, how inboard it is, the angle, and the front weight of the truck stuff in the 650-750 is where we wanted to be, 800 was a bit too high at first so we went with some 550 after.. and those were way too soft. Coilover spring rate is a bit of black magic to say the least.
Currently we have some Pro-comp mono tube shocks, which are just rebranded Bilstein 5100's in the GMC and they've been fine so far. So we'll see how they do in the interm before we re-do the front. Again. I'll be interested to see if the rears hold up or if we have to go to a better shock. Or if she blows them up again....
As for the hydro bumps on the jeep...
... they're awesome. Its one of the better mods Ive done on my jeep so far, really makes a huge difference in being able to carry speed on fast open dirt roads. I'll be doing rear hydro bumps in the jeep at some point as well, but I don't bottom on the rear as bad as the front was its lower priority. Currently in the I have 2.0 shocks with resi's and that has been a pretty good match for my driving style, the weight of the rig and clearance. I was tempted to go with 2.5's on it, but to do that I would have had to made some major tweaks to the shock mounting on the front by the axle and up by the frame. The rear would have had to have the upper mounts moved a bit as well, so in the interest of reducing downtime and saving the hurt on my wallet the 2.0's were a better off the shelf solution.
I'd highly recommend you get something with an external reservoir for the shocks if you can, it makes a big difference when you start really pushing them.