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Rear End Ratio RPO Codes Here

This is a discussion on Rear End Ratio RPO Codes Here within the Technical / Maintenance forums, part of the General Discussion category; yea that was the first place i checked and i figured some guy was to damn lazy to put it ...

  1. #281
    Registered User PASK8ER2002's Avatar
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    Re: Rear End Ratio RPO Codes Here


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    yea that was the first place i checked and i figured some guy was to damn lazy to put it back on.

  2. #282
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    Re: Rear End Ratio RPO Codes Here

    So I reckon we'll both have to get dirty......

  3. #283
    Registered User PASK8ER2002's Avatar
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    Re: Rear End Ratio RPO Codes Here

    i sold the gt5 g80 4.10 for $275 did get swindled?

  4. #284
    Registered User Slipkorn34's Avatar
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    Re: Rear End Ratio RPO Codes Here

    i was afraid to look up what my truck has gu4 behind a tired 4.3 with a 5 speed haha...well at least it lets me save up for a new rear end in the money i save on gas
    1969 Mercury Cougar XR7 - Temporarily sold
    1978 Chevy Scottsdale, 1956 Chevy Short Step Bed - Sold
    1996 Chevy k1500 - sold
    1990 chevy c1500

    Originally Posted by dhvaughan
    $75 would be ok if it didn't come with a new wife !
    I'd rather just have the toolbox and pay list price.

  5. #285
    Registered User SierraDan's Avatar
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    Re: Rear End Ratio RPO Codes Here

    Eww, 3.08 with a 4.3? That sucks, needed that GT5 G80 that guy sold, you really need it bad, it'd be a night and day difference like you wouldn't believe. I drove a 2.73 Mustang then my 3.08 Mustang and that alone was a really noticable change, can't imagine a +1.02 change.

    95 Sierra C1500 SL
    99 Suburban K1500 LT

  6. #286
    Registered User PASK8ER2002's Avatar
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    Re: Rear End Ratio RPO Codes Here

    ya i would of rather sold it to someone would needed it then the dude i sold it to. he just wanted the axles but bought the whole rear and called me later and asked me how to get them out

  7. #287
    Registered User N0DIH's Avatar
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    Re: Rear End Ratio RPO Codes Here

    Beats a friend of mine who has a 85 OOBS truck with a 305 and 2.56's....

    Quote Originally Posted by SierraDan View Post
    Eww, 3.08 with a 4.3? That sucks, needed that GT5 G80 that guy sold, you really need it bad, it'd be a night and day difference like you wouldn't believe. I drove a 2.73 Mustang then my 3.08 Mustang and that alone was a really noticable change, can't imagine a +1.02 change.

  8. #288
    Registered User Slipkorn34's Avatar
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    Re: Rear End Ratio RPO Codes Here

    it wouldnt be so bad if my last truck was a 5.7 vortec with a g803.73 and the one before that was an old 70's c10 with a built motor and 4.11 locker rear end....slllooooooooooooow
    1969 Mercury Cougar XR7 - Temporarily sold
    1978 Chevy Scottsdale, 1956 Chevy Short Step Bed - Sold
    1996 Chevy k1500 - sold
    1990 chevy c1500

    Originally Posted by dhvaughan
    $75 would be ok if it didn't come with a new wife !
    I'd rather just have the toolbox and pay list price.

  9. #289
    Registered User SierraDan's Avatar
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    Re: Rear End Ratio RPO Codes Here

    Quote Originally Posted by N0DIH View Post
    Beats a friend of mine who has a 85 OOBS truck with a 305 and 2.56's....
    My 86 C10 Silverado had a 305 and 2.73 open rear, felt a lot better with the 350 dropped in with headers and cam, and I appreciated those tall gears at times because of the TH350, it already got horrible mileage with only 3 gears, can't imagine had it have had 3.73's or 4.10's, would have had to put a 700R4 in it.

    95 Sierra C1500 SL
    99 Suburban K1500 LT

  10. #290
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    Re: Rear End Ratio RPO Codes Here

    I have a 1982 GMC High Sierra 4X4 and the rear axle went out and the RPO code for it is GQ1 which means Standard Gear Ratio. What is the Standard Gear Ratio?

  11. #291
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    Re: Rear End Ratio RPO Codes Here

    I have a 1982 GMC High Sierra 4X4 and the rear axle went out in it. The RPO COdes for it is GQ1 and that means Standard Gear Ratio. What is the Standard Gear Ratio?

  12. #292
    Truckin ain't for sissies
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    Re: Rear End Ratio RPO Codes Here

    So i have GT4 -- AXLE REAR, 3.73 RATIO but I'm assuming that it's an open diff. 1 tire fire, 1 wheel peel...
    Here's the sticker..
    Last edited by TheInfamousBigD; 11-17-2010 at 08:07 PM. Reason: picture

  13. #293
    Registered User SierraDan's Avatar
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    Re: Rear End Ratio RPO Codes Here

    If it doesn't say G80 also, then it's open.

    95 Sierra C1500 SL
    99 Suburban K1500 LT

  14. #294
    Registered User Dev's93's Avatar
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    Re: Rear End Ratio RPO Codes Here

    3:42's in mine but I gotta 350 to make up the difference. Its fine with me though saves me on some gas when I'm rollin 85 down I74

    93 Chevy 2 toned shaved hid's smoked lights lowered amd more

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  15. #295
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    Re: Rear End Ratio RPO Codes Here

    Or G86.... G80 in a truck is a GovLock, G86 is a Limited Slip (very rare)....

    Quote Originally Posted by SierraDan View Post
    If it doesn't say G80 also, then it's open.

  16. #296
    Registered User SierraDan's Avatar
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    Re: Rear End Ratio RPO Codes Here

    Must be, i've never seen G86 in any trucks i've been in.

    95 Sierra C1500 SL
    99 Suburban K1500 LT

  17. #297
    Registered User N0DIH's Avatar
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    Re: Rear End Ratio RPO Codes Here

    My guess is for some special application or customer. Say Customer xxx is going to fleet order 100 pickups, but doesn't want the locking diff, but still wants some sort of limited slip diff. An RPO code would have to be born...

    Quote Originally Posted by SierraDan View Post
    Must be, i've never seen G86 in any trucks i've been in.

  18. #298
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    Re: Rear End Ratio RPO Codes Here

    gt4 3.73 with g80 locker on my 96 k1500 x cab with the 5.7l and 4l60e trans, no complaints here...

  19. #299
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    Re: Rear End Ratio RPO Codes Here

    found this website here. just punch in any rpo code in the search bar and it gives the meaning. not sure if its been posted yet. http://www.gm-trucks.com/rpo-code-lookup/?

  20. #300
    CJC
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    Re: Rear End Ratio RPO Codes Here

    my 2001 suburban k2500 has a 496 with a 4L80-E and 4:10 (GT5) locking (G80). i'm happy with that. i also found that it has an HD braking system rated for 9900 lbs (jh6). pretty cool.

 

 
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