[Aqua Blue RS/SS]

I’ve had a couple of them. They are certainly bad ass, tall deck big block with 375ish ftlbs of glorious torque at IDLE. I had a 2001 3/4 suburban with a 4l85(avalanches and suburbans didn’t get the Allison). I got 12-15 on the highway regularly if I drove it gentle. I also had a 2006 K3500 single wheel rclb for a while with the ally. Bothe trucks had way over 200 on them, actually the K3500 has close to 300,000 on it as my father in law bought it from me a few years ago and still has it. The suburban had 270xxx on it when I sold it to buy my Camaro. You won’t be disappointed. If you get an earlier 01-04(?) they have an adjustable fuel pressure regulator from the factory, these engines LOVE higher fuel psi but the trade off is even worse fuel mileage when you crank the psi up. They are animals as far as factory gas truck engines go.