What's the hub bore on a 54? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Matt300ZXT · 10-28-2010, 02:05 PM

I took a piece of string and wrapped it around mine on the front of my 54 1/2 ton 2 wheel drive truck and cut it where the string met itself and the circumfrence measured riiiiight at 8.25". I did a calculation and came up with a diameter of about 2.65". Just want to make sure my math was right. If someone on here has a nice digital caliper, would ya be able to go outside and measure just to make sure I'm right?

dwcsr · 10-28-2010, 09:54 PM

Not sure what bore your measuring, Seal bore, brg bore, inner or outer?

The inner wheel bearing sizes are as follows.
ND 909552 inner cone 1-7/8" (1.875) OD x 1-9/32 ID (1.2813) This sits on the spindle
ND 909602 Cup 2-7/8 OD (2.875)x 2-21/64 ID (2.328) This is in the hub

10-28-2010, 02:05 PM	#1
Matt300ZXT Registered User Join Date: Apr 2010 Location: Chattanooga, TN Posts: 100	What's the hub bore on a 54? I took a piece of string and wrapped it around mine on the front of my 54 1/2 ton 2 wheel drive truck and cut it where the string met itself and the circumfrence measured riiiiight at 8.25". I did a calculation and came up with a diameter of about 2.65". Just want to make sure my math was right. If someone on here has a nice digital caliper, would ya be able to go outside and measure just to make sure I'm right?

10-28-2010, 09:54 PM	#2
dwcsr Hollister Road Co. Join Date: Apr 2005 Location: Houston Posts: 6,134	Re: What's the hub bore on a 54? Not sure what bore your measuring, Seal bore, brg bore, inner or outer? The inner wheel bearing sizes are as follows. ND 909552 inner cone 1-7/8" (1.875) OD x 1-9/32 ID (1.2813) This sits on the spindle ND 909602 Cup 2-7/8 OD (2.875)x 2-21/64 ID (2.328) This is in the hub



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