A little help to set record straight.

[Brad Zeidler]

I'm on the Full Throttle V6 forum trying to give some correct info on the 8.5" G body axle. One guy is saying his 82 Grand Prix diesel came with one and I'm sure they only came in the Turbo cars from 84-87 and the 86-87 442. Is there an option code that specifically is designated for the 8.5" rearend? If so What is it?

 

[RIFF RAFF]

G-80

Is a g-80 is a g-80 is a g-80. I think that covers all makes .so that should be the option code .my 1979 hurst olds has a g-80 at least when i need parts thats what i get them for ..

 

[salvageV6]

G80 for the posi.

G87 for the peg leg.

GU6 for the 3.42 ratio.

 

[TexasT]

G80 for the posi.

G87 for the peg leg.

GU6 for the 3.42 ratio.

G87 : RING GEAR, 8.50 INCH

RPO Codes.com: general motors option codes

though it is a peg leg w/o the g80

 

[INEEDAGN]

g87 is the code for the 8.5 axle

g89 is the code for 7.5

g80 is the posi diff

various other codes were for ratio

BUT, no use looking at a car pre-84, unless you have the window sticker or a build sheet. You'll have to look at the axle under the car. RPO stickers did not appear until 84

 

[Dennis Kirban]

g87 is the code for the 8.5 axle

g89 is the code for 7.5

g80 is the posi diff

various other codes were for ratio

BUT, no use looking at a car pre-84, unless you have the window sticker or a build sheet. You'll have to look at the axle under the car. RPO stickers did not appear until 84

Sharp group here....ashame those rpo stickers or trunk ID labels as I refer to them did not appear to 1984 models...sure would make things easier for owners of the older cars....

denniskirban@yahoo.com

 

[ttaowner]

I'm on the Full Throttle V6 forum trying to give some correct info on the 8.5" G body axle. One guy is saying his 82 Grand Prix diesel came with one and I'm sure they only came in the Turbo cars from 84-87 and the 86-87 442. Is there an option code that specifically is designated for the 8.5" rearend? If so What is it?

84 only hurst olds had a 8.5 but the 83 hurst olds had a 7.5
85 442 did also have a 8.5
and as you correctly stated the 84-87 turbo cars had them as well


also note it is quite common for these rears to be missing out from under these cars. i have bought 3-4 turbo cars that were missing their correct 8.5 rears. it is more common than you may think so always check!!!!

 

[87granny]

84 only hurst olds had a 8.5 but the 83 hurst olds had a 7.5
85 442 did also have a 8.5
and as you correctly stated the 84-87 turbo cars had them as well


also note it is quite common for these rears to be missing out from under these cars. i have bought 3-4 turbo cars that were missing their correct 8.5 rears. it is more common than you may think so always check!!!!

Yea i found out the car i baught had the wrong rear in it but after i got it home i should have checked a little better