The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - First hand experience with changing to the NBS master cylinder WOW!

z71se · 11-30-2015, 10:27 PM

Hey guys I just got done with the GMT800 MC swap and I also took the opportunity to install 02 knuckles and rotors/ calipers (to fit under my stock 16" Alcoa wheels). New drums, shoes, and stock replacement wheel cylinders out back. The dead spot does seem reduced, but I'm not 100% sure the braking significantly improved. As others have stated, the GMT800 MC has a smaller bore size so you have to push harder on the pedal even though the pedal is firmer. Anyways, I'm still not satisfied with the brakes even after all this work (reaming the GMT800 knuckles was kinda a pita). Am I correct that converting to hydroboost is my last option? I wish there was a GMT800 master cylinder that had a slightly larger bore size. My truck is a 2000 Z71 Tahoe (old body style).

11-30-2015, 10:27 PM	#140
z71se Registered User Join Date: Nov 2015 Location: Cailfornia Posts: 284	Re: First hand experience with changing to the NBS master cylinder WOW! Hey guys I just got done with the GMT800 MC swap and I also took the opportunity to install 02 knuckles and rotors/ calipers (to fit under my stock 16" Alcoa wheels). New drums, shoes, and stock replacement wheel cylinders out back. The dead spot does seem reduced, but I'm not 100% sure the braking significantly improved. As others have stated, the GMT800 MC has a smaller bore size so you have to push harder on the pedal even though the pedal is firmer. Anyways, I'm still not satisfied with the brakes even after all this work (reaming the GMT800 knuckles was kinda a pita). Am I correct that converting to hydroboost is my last option? I wish there was a GMT800 master cylinder that had a slightly larger bore size. My truck is a 2000 Z71 Tahoe (old body style).