How’s it going guys I recently came across my first car and it is a 2001 z28 camaro. I got it as a roller I’m currently swapping in my entire set up from my 1998 Obs Chevy Tahoe 4 door. Set up at the moment is a 6.2 with PRCs 260s, trunion kit, custom grind gpi cam 240/260 .646 intake .637 exhaust 110 LSA stock L92 intake for now. I have the holley hi ram brand new I haven’t installed but thinking of going with a C.I.D intake set up since the car is cable driven. The transmission I’ll be going with for now is a “built” 4L60e with a Circle D 5C 4500rpm stall converter. Now for the car I believe it has the 10 bolt differential. What are some good aftermarket rear ends you guys recommend for my set up? I just had a Eaton TruTrac on my tahoe and it held up fine with some 4.11s. My question is should I even bother putting a Eaton Posi unit and gears into this differential? Not sure what gears it has just know they are stock. I also have a th400 crossmember and drive shaft I got, since I do plan on switching to it in the near future, as well as some umi suspension parts. I got the umi adjustable panhard bar, umi adjustable lower control arms (lca) and umi adjustable chassis mounted torque arm. What rear end could I go with that I can still use these parts? I’m getting everything swapped and put into the car at the moment should be ready in about 2 weeks. This setup should put me around 560+rwhp so just worried the rear end won’t hold. I want to see what are some important things you guys recommend to upgrade as well as what gears you guys think I should go with? I personally was leaning towards 3.90s but I’m open to any suggestions thanks sorry about the long story lol!! What times should I be expecting in the 1/4? My personal best in my tahoe was a 11.96 @110mph 1.63 60 ft. On that run I was still on my 823 heads milled and on a 78mm throttle body!

 

The 7.5" 10-bolt barely handles stock HP in an AT, and can easily break w/ a stock-motored M6 (ask me how I know). Not worth sinking a dime into IMO, especially at the HP levels you are shooting for. 4.10s in a 10-bolt only further stresses the pinion. I'm just getting my car back on the road after swapping in an S60, however a 9" is also a good option. The S60 available ratios jump from 3.73 to 4.10 (I went w/ 3.73 but would've gone w/ a 3.90 had it been available). I'm not sure what ratios are available in the 9".

 

The 9" has a lot of different ratios. There are also a few versions of the 9" out there. There are updated ones that fix some.of the known issues that have come about over the last 50+ years. That being said it's an awesome rear.

I have an S60 with 3.73 and I believe you can get different gears cut they are just custom and expensive. By that I mean 3.0X, 3.2X....etc

Don't sink money into the 10 bolt if you can help it.

 

I recently went with an S60 from strange, very happy with it. 9" is another good option. as noted many times before the stock 10 bolt is junk.