That's what originally started this. Years ago when I got my 5100s and went to get an alignment my cam bolts were seized. So the LCA'S were cut out and replaced with Mevotechs, also replaced all my cam hardware with OEM stuff. After that, my alignment specs were just junk. Could never get it aligned properly. Looking back, I'd of cut them out and replaced the bushings and put the new hardware in, but that didnt happen.
Recently, I threw in the SPC cam bolt kit and got zero change which was super strange at the time, but now with the bushings the way they are, makes sense.
So hopefully with the new LCA and bushings and SPC bolt kit, I'll be able to dial in my alignment.
Why do you say the aftermarket cam bolts suck? Can you explain your negative experience with them?
I tried two different aftermarket kits. Not sure of the brands, but they looked a lot like the SPC kit. One of them had smaller than OEM cam washers. The other had bolts that were way too long for one, and too short for the other (yes, I tried swapping them, ha). I didn't like the cheap plastic sleeves, and unlike the OEM hardware where the sleeve runs all the way through the frame brackets, the sleeve would get pinched in between the brackets. It seemed like it needed to be another 1/4" longer.
Currently on my truck, one side is OEM and one side is aftermarket. I've had trouble holding my alignment on the side with the aftermarket bolts. I actually painted alignment marks on them and have to get under there and realign it after any moderate to hard wheeling.... Which seems to be every other week. I bought new OEM bolts and plan on swapping them out this weekend.
SPC bolts can't seize because they are sleeved. They are way stronger than stock
How so? The OEM bolts are sleeved. It's the sleeve that seizes most of the time, not the bolt. There's also no way they're stronger than stock. They are ground down half the length of the bolt to fit the slotted washers. The OEM hardware uses a solid bolt through a sleeve.
In my opinion, the OEM setup is the best out there. Toyota just needed to grease the sleeve and the bolt prior to installation, and this wouldn't be an issue.