How many people have broke the G80

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03-03-2005, 10:36 PM

#31

BMDMAX

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03-03-2005, 11:29 PM

#32

davew72

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is the g80 different in 1/2 tons vs 3/4 tons

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03-03-2005, 11:56 PM

#33

Mr. Sandog

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Hahaha.....what a dork am I.

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03-04-2005, 09:47 AM

#34

tooquick2beslo

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I have broke mine twice. I am on my third one at the moment. I need to buy an aftermarket one but didnt have the money at the time. This one is prolly on its last leg. When I go to the track spraying a bigger shot I'm pretty sure its over.

I cant believe parish is still on the stock G80 with all the hp he has. WOW!

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03-04-2005, 12:24 PM

#35

brandont454

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i broke one in a 2.8L s-10. that should tell you something about the strength of the g80

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03-04-2005, 07:33 PM

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litreddevil

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I have 70k on mine and i am on my 4th or 5th g80 now I have and eaton works great love it.

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03-04-2005, 07:35 PM

#37

litreddevil

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Quote:

Originally Posted by Boosted

hmmm. My turbo buick has a g80 in it and has been 10.12@133 mph at 3700 lbs..Not broke one yet...Over 70k miles...

what 60' times are you running

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03-04-2005, 07:43 PM

#38

Mort

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Quote:

Originally Posted by davew72

is the g80 different in 1/2 tons vs 3/4 tons

I think that they must be because the 1500 is an 8.5"? ring gear, the 1500HD-2500 is a 9.5" ring gear and the 2500HD is a 10.5" ring gear. The 2500HD G80 should be considerably stronger.

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03-04-2005, 08:21 PM

#39

James B.

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The 10.5" rear is a weird one. It gets its extra strength from two major things - having the pinion gear supported on BOTH sides by bearings and having a differential with 3 or 4 spider gears instead of only two.

Compare:
8.5/8.6" OEM G80
8.5 OEM G80 installed
9.5" Eaton Posi
9.5" OEM open diff installed
10.5" Eaton Posi
Inside an OEM 10.5" G80
10.5" housing vs. 8.5" gears
10.5" Eaton Posi installed

"Brake-Assisted" launching on a 10.5" Eaton Posi video

The 10.5" has a weight penalty there's no getting around. It's massive, but you end up with something that has no c-clips and can be geared very low without the danger of breaking teeth.