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

z71se · 12-09-2015, 05:23 PM

Also - reaming out the GMT800 knuckles is a huge PITA! If you would like to use my tool (I only used once), let me know and you can borrow it! I also have some tips on how to make the reaming easiest... you'll want to use an air ratchet with the knuckle mounted in a vice. Get an old or new GMT400 upper and lower balljoint handy to test fit as you go along. Both the upper and lower balljoint holes will need reaming. The reaming tool in a socket in conjunction with the air ratchet was definitely the best method I found...

12-09-2015, 05:23 PM	#143
z71se Registered User Join Date: Nov 2015 Location: Cailfornia Posts: 284	Re: First hand experience with changing to the NBS master cylinder WOW! Also - reaming out the GMT800 knuckles is a huge PITA! If you would like to use my tool (I only used once), let me know and you can borrow it! I also have some tips on how to make the reaming easiest... you'll want to use an air ratchet with the knuckle mounted in a vice. Get an old or new GMT400 upper and lower balljoint handy to test fit as you go along. Both the upper and lower balljoint holes will need reaming. The reaming tool in a socket in conjunction with the air ratchet was definitely the best method I found... __________________ 77 C10 Silverado SWB - LS Swap, mechanical resto-mod 05 Z71 Silverado RCSB - 5.3L LM7, 76mm turbo, 4L80e