[Chris95GT]

Originally Posted by Brandon_Lutz

Sorry to drag this thread back up, so please forgive me. I've searched many threads on many forums about this swap and I'm still getting kind of confused on which MC I should be looking at.

I have a 95 K2500 with the 5.7. I'd like to do this swap on my truck but I'm not sure with NBS Master Cylinder should I be looking at to to replace it. I'm not looking to go to hydro-boost and I plan on keeping the setup as it currently is, vacuum assisted.

I've found conflicting issues in various places on whether I should get a 1500 4x4 Master Cylinder from an NBS as the 3/4 ton trucks and up were hydro boost on some models. Or I should look into a 2500 master cylinder. Can anyone tell me definitively which one I should look into getting?

My truck is a true 3/4 ton 8600GVW 99 GMT400 truck. I went with the MC from a 2003 K1500 Avalanche (Just because it's what I had from another project). It's worked great for me so far. I don't know if there was a difference between the 1/2 ton and 3/4 ton vacuum master cylinders in the GMT800 platform, but I'm using a half ton unit on my 3/4 ton and love it.