The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Bout to buy new gears, limited slip and bearing kit. Should I upgrade axles first?

Lil Ape · 11-01-2014, 05:49 PM

About to finally re gear and add a posi to my rear end, it's an open diff, 2.56 geared 8.5 10 bolt with 28 spline axles right now. Looking to go with this package I found, I think it's a good price, though not sure of the quality of the gears. http://www.ebay.com/itm/GM-8-5-10-Bo...ebed7c&vxp=mtr

Question I have is before I buy, should I look into getting 30 spline axles or will 28 be fine? Were the 30 spline axles any stronger? This truck wont be making any high power, just want it to be quicker. Just wasn't sure what the difference in strength was between the two axles.

11-01-2014, 05:49 PM	#1
Lil Ape Registered User Join Date: Feb 2013 Location: Houston, TX Posts: 89	Bout to buy new gears, limited slip and bearing kit. Should I upgrade axles first? About to finally re gear and add a posi to my rear end, it's an open diff, 2.56 geared 8.5 10 bolt with 28 spline axles right now. Looking to go with this package I found, I think it's a good price, though not sure of the quality of the gears. http://www.ebay.com/itm/GM-8-5-10-Bo...ebed7c&vxp=mtr Question I have is before I buy, should I look into getting 30 spline axles or will 28 be fine? Were the 30 spline axles any stronger? This truck wont be making any high power, just want it to be quicker. Just wasn't sure what the difference in strength was between the two axles. Last edited by Lil Ape; 11-01-2014 at 05:54 PM.