What size is my front diff?

Reply Subscribe

Thread Tools

Search this Thread

Sep 17, 2005 | 12:26 AM

Rick'SS 98

Thread Starter

Staging Lane

Joined: Jan 2003

Posts: 59

Likes: 0

From: USA

What size is my front diff?

2003 1500HD, I have the 9.5" semi-floater rear. 3:73's, 4L80E. I think it is the 9.25" up front. Also, who makes a limited slip or selectable locker for it. Thanks.

Sep 17, 2005 | 12:41 AM

cbrich

TECH Resident

Joined: Mar 2005

Posts: 943

Likes: 0

From: Texas

Go with Eaton E-Locker for the front.

Sep 17, 2005 | 10:45 AM

Mort

TECH Addict

Joined: Feb 2004

Posts: 2,120

Likes: 0

According to a post I got off of GM-Trucks ages ago the front diff: is an AAM 925:235mm Ring Gear, Axle Torque Capacity 6300Nm, Gear Ratio Range 3.42-4.56. The 925 stands for 9.25" AFAIK. 235mm / 25.4mm/in. = 9.25".

Sorry never researched any LS or LD but the above suggestion sounds good.