What kind of rear diff and gear's your Blazer come with?
#12
10-21-2013 | 12:45 PM
Mine is still stock. Open GU6. I was told that the max tire size I can mount safely for it (for extreme off-roading use) is 31". If I go bigger the Blazer will become slow and feel weak too. Currently I have 265x70/15 (roughly 29.6"x10.4"/15).
#13
10-21-2013 | 07:05 PM
GT4 (3.73) in my 4x4 with a G80....i have a ZR2 axle with a G80 that i have to get swapped in, i am just waiting until i can buy a e-locker for it. i have all the rear brake parts sitting in my bed room.... its starting to look like a garage in here.
my work blazer has a GU6 (3.42) open.
my work blazer has a GU6 (3.42) open.
#15
10-21-2013 | 10:02 PM
BF Veteran
Joined: Sep 2011
Posts: 2,278
From: Texas
I've got the 3.73 with the G80 locker, but, sadly, its locking days seem to be over.
Someday, though, it will be able to go to axle retirement, and a freshly built Dana 44, complete with ARB air locker and 4.11 gears will take it's place.
Someday, though, it will be able to go to axle retirement, and a freshly built Dana 44, complete with ARB air locker and 4.11 gears will take it's place.
#16
12-07-2013 | 06:29 PM
Starting Member
Joined: Dec 2013
Posts: 1
Did your gas mileage change any with the ZR2 rear swap?
#17
12-08-2013 | 01:05 PM
BF Veteran
Joined: Jan 2008
Posts: 2,611
From: Southern, Alberta
Yeah, my mileage was hurting with the 31" tires and the 3.42 gears, especially in town and city driving. I gained about 1-2mpg (mixed city/highway) when I went up to the 3.73 gears.
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