[speedygonzales]

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?

See this

Originally Posted by speedygonzales

Just wanted to clarify for those not sure what we are referring to.

If you have one of these:
crappy master cylinder
replace it with one listed above that looks like this
good replacement

Originally Posted by speedygonzales

NBS Master Cylinder numbers:
GM 19209249
Durastop 18M1159 made by AC Delco
AC Delco 174-1003
NAPA NMC M3432
Cardone 13-2881
Dorman M630031
Fenco NM3089

Go back to the first page for instructions because the lines are different sizes