What rearends are in the Blazers?
#1
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Just like the title says. I would like to know whats in mine but it would be nice to know whats in other ones.
#2
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Rear Axle Identification
In your glove box you should have a list of RPO codes. Diff codes srart with a G
GT4
Rear Axle: 3.73 Ratio
GT5
Rear Axle: 4.10 Ratio
GU4
Rear Axle: 3.08 Ratio
GU6
Rear Axle: 3.42 Ratio
G67
Level Control: Automatic
G80
Rear Axle: Positraction
In your glove box you should have a list of RPO codes. Diff codes srart with a G
GT4
Rear Axle: 3.73 Ratio
GT5
Rear Axle: 4.10 Ratio
GU4
Rear Axle: 3.08 Ratio
GU6
Rear Axle: 3.42 Ratio
G67
Level Control: Automatic
G80
Rear Axle: Positraction
#3
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I actually ment what rear end as in 10 bolt, 12 bolt, etc. Im guessing its a 10 bolt but I dont know by looking and havent found it in the owners manual.
Good info though.
Good info though.
#4
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10 bolt, and if I remember right, it's a 7 5/8"
#5
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whats the preferred rear end? besides a nice blonde.. hehe
#6
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Depends what years but I think most 1st gens are using the same rear ends as the f bodies just different supension.
#7
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The ZR2 & Highrider suspensions (Chevy & GMC variants) has an 8.5" rear ring gear. All others have the 7-5/8" ring gear. And yes, they are the GM-corp 10 bolt. The G80 locker is GMs Gov-loc arrangement and while it may be perfectly fine for on road to light offroad use, anything more and you'll want to put in a true posi or locker setup depending on your level of offroading.
#8
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ORIGINAL: swartlkk
The ZR2 & Highrider suspensions (Chevy & GMC variants) has an 8.5" rear ring gear. All others have the 7-5/8" ring gear. And yes, they are the GM-corp 10 bolt. The G80 locker is GMs Gov-loc arrangement and while it may be perfectly fine for on road to light offroad use, anything more and you'll want to put in a true posi or locker setup depending on your level of offroading.
The ZR2 & Highrider suspensions (Chevy & GMC variants) has an 8.5" rear ring gear. All others have the 7-5/8" ring gear. And yes, they are the GM-corp 10 bolt. The G80 locker is GMs Gov-loc arrangement and while it may be perfectly fine for on road to light offroad use, anything more and you'll want to put in a true posi or locker setup depending on your level of offroading.
#9
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ORIGINAL: drperry
Got any suggestions on a good posi? Locker's are cool and all... but a posi rocks for 2wd slides, lol
ORIGINAL: swartlkk
The ZR2 & Highrider suspensions (Chevy & GMC variants) has an 8.5" rear ring gear. All others have the 7-5/8" ring gear. And yes, they are the GM-corp 10 bolt. The G80 locker is GMs Gov-loc arrangement and while it may be perfectly fine for on road to light offroad use, anything more and you'll want to put in a true posi or locker setup depending on your level of offroading.
The ZR2 & Highrider suspensions (Chevy & GMC variants) has an 8.5" rear ring gear. All others have the 7-5/8" ring gear. And yes, they are the GM-corp 10 bolt. The G80 locker is GMs Gov-loc arrangement and while it may be perfectly fine for on road to light offroad use, anything more and you'll want to put in a true posi or locker setup depending on your level of offroading.
#10
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It all depends on if you have the G80 locker or not. In an open case, everything can be installed without removing the carrier. If you have the G80, I don't think anything goes into a G80 carrier... So that means you'd need to find an open diff carrier and transfer over your gears, install new bearings, then install the posi/locker unit of your choice.