Originally Posted by CI GS

OP, have you decided what you're going to do as yet with this?
I'm still undecided (actually more confused) after researching this further. I would probably do the rear spherical bearings, and I'm not so much worried about the harsher ride, but I don't want to have to pull my suspension down again in a few years to replace bearings that might not be available or be out of production, or some other BS. What I can't figure out is why these things can't be designed so that they can be greased? I guess then they would be really expensive, and the bearing manufacurers would be able to sell many replacement bearing kits?
The other thing is that, at more than double the cost of the Ridetech Delrin kit, they're very expensive to start with, and the LG kit (which seems to be preferred over the Pfadt) requires some machining for the kit to be installed. That makes those prohibitive to me.
I'll probably go with either the Pfadt rear "Drag Race" kit, or the Ridetech Delrin. I hate buying something that make my car squeaky though, and I've read about Delrin bushings being brittle and grenading during installation, which is wierd. If Ridetech offered a rear control arm Delrin bushing kit at roughly half the cost of the full kit, I would've bought it already. The Van Steel (or is that "steal") Delrin bushings are available separately, but they add up to be nearly as expensive as the spherical bushings! What a conundrum...[/QUOTE

I'm still thinking and evaluating on my options, or lack thereof.

Check out this thread, https://www.corvetteforum.com/forums...ar-review.html

Reading the above link/thread, there seems to be no real machining, just a little grinding/sanding and enlarging an existing hole for the LGs.
I have plenty of other mods to keep me busy before getting to this one!

Originally Posted by tslsa28

What about the Chevrolet T1 A arms? They have the front upper and lower and the rear lower A arms. I use my stock LS3 on road courses with NTO1s or Hoosiers and with the stock A arms was losing camber in the front on turns (indicated by tire wear) and felt the rear steer a bit under acceleration. With the T1s my front tires are wearing much better and the rear seems more stable. The T1s use a firmer rubber bushing but I couldn't tell any difference on the street with harshness or noise. Other than being expensive, they work very well for me.

Originally Posted by tslsa28

What about the Chevrolet T1 A arms? They have the front upper and lower and the rear lower A arms. I use my stock LS3 on road courses with NTO1s or Hoosiers and with the stock A arms was losing camber in the front on turns (indicated by tire wear) and felt the rear steer a bit under acceleration. With the T1s my front tires are wearing much better and the rear seems more stable. The T1s use a firmer rubber bushing but I couldn't tell any difference on the street with harshness or noise. Other than being expensive, they work very well for me.

Originally Posted by TomdaToolman

Wouldn't urethane bushings accomplish the same thing and possibly be an even greater improvement?

Originally Posted by tslsa28

I'm sure the performance would be as good or better but I don't know about ride quality and longevity as I have only tried the T1 A Arms. A good friend works at a Cadillac dealership so he gets me GM parts at cost which made it easy to try the T1 parts.

Originally Posted by c6moneypit

I went through the same research when replacing my rubber bushings (the front started to melt from brake heat on track). The stock rubber was so bad I had clunking when braking on the street and turning in parking lots. I was worried about ride quality/noise/harshness etc. I got LG poly and grease was used inside where the metal contacts the bushing. Results: no more clunking noises, suspension feels solid now and I don't notice deflection like I did before (on street or on track); I can't say I notice an increase in harshness or road noise... I'm sure it is transmitting more since it is tighter now, but I don't notice it nor am I bothered on the street; Almost no noise/squeaks from the poly...if the car has been sitting a while it will make some subtle "crunching styrofoam" like noises when backing out the driveway or going over bumps that move the control arms a lot, but it is very minor and goes away after just a few minutes of driving. I was very worried about ruining street manners with the poly but after having them installed I regret not doing it sooner. It doesn't ruin my street driving experience/enjoy-ability one bit... even when it make a tiny amount of noise when cold. If you get poly, just go with LG and get them properly installed and lubed. Hope my experience is helpful.