I am planning to upgrade my open diff to a posi or limited slip. I have been researching this topic for a couple weeks. My truck is an 88 lwb 5.7l c1500 with 8.5 rear 10 bolt and 3.42 gear. It has tbi and a well worn in rebuild. Motor is great. I plan to replace some valve stem seals on the 5.7l but not much else for now. It has great low end and that's all I really need. I just got it back from a few years at my son's place. I have been fixing things: New tires 235/75r15 and Chevy wheels 15", New windshield, new stereo, cover for bench seat, fixed some broken interior pieces. I am dying to turn this truck into a full size mid life crisis but my grown son, the mechanic, is begging me to keep the tbi for simplicity.
Im thinking a 2/4 drop with spindles and springs/ flip kit for the rear. Unfortunately I have not been able to find the video where they show the lowered truck hauling a refrigerator. I know there are air ride load supports available too. Just find that video of the refrigerator and send it to me ok?
The Chevy's open rear was great when I was hauling mower trailers and such. Its not so great when you get stuck in your neighbors yard during a tailgate party. Most of the vids say the G80 was the king of Chevy limited slip. I was going for the clutch pack idea but was quickly talked out of that. I have heard that the Truetrac is Eaton's replacement for the G80. I like that it is wheel speed sensing. I think it will help me in light snow and gravel parking lots at camping and picnic sites in the mountains. I have also seen that the locker is great for 4wd but has some street characteristics that are not so great. My current setup spends most of its life below 2500 rpm. I want a great limited slip that will last for years. I also want to future proof the truck in case I later decide to go full mid life crisis and build a dropped blown pro street truck.
I know there are a lot of very good manufacturers out there. You may prefer another. Which do you like? Which gets the nod?
