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04-11-2008, 04:00 PM
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#1 |
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Registered User
Join Date: Jun 2007
Location: Smyrna, GA
Posts: 709
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Gear ID stamp on axle
I have a 12-bolt rear and was told there was a stamp on the passenger side of the axle that will ID my gear as it came from the factory. Im having trouble finding the stamp, can anyone tell me where it is and what the letters stand for?
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Rottenwood Garage 1970...71...72 C1500 aka Orange aka Sideshow Bob 540 BB Straub Roller Cam, AFR Magnums, XP 950, TKO 600 2 Tons of Fun |
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04-11-2008, 04:22 PM
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#2 |
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Son of a gun
Join Date: Jan 2007
Location: Hot Springs, Arkansas
Posts: 1,636
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Re: Gear ID stamp on axle
There is a stamping on the ring gear that will tell you the ratio, It'll say like 14:43. you divide the second number by the first, and that will give you your ratio.
43/14=3.07
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Bill BEATERS ARE NEATER |
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04-11-2008, 04:34 PM
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#3 |
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Senior Member
 
Join Date: Jan 2002
Location: PORT NECHES, TEXAS / USA
Posts: 1,668
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Re: Gear ID stamp on axle
The number is stamped on tube. It angled towards the rear window. Should be a # digit
number in a 70. TDA=308 RHA=308 THA=308 RHC=373 THC=373 HA=373 IN A 69 AND OLDER HB OR HC = 308 AND OLDER I THINK Some of these or probably wrong, i do not have my book with me. There is a lot of different numbers. I think a B, X and others or locking rear ends. That is the last digit that is different. I have a book if you need help with it.
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04-11-2008, 04:38 PM
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#4 | |
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Son of a gun
Join Date: Jan 2007
Location: Hot Springs, Arkansas
Posts: 1,636
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Re: Gear ID stamp on axle
Quote:
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Bill BEATERS ARE NEATER |
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04-11-2008, 06:19 PM
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#5 |
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Rottenwood Garage Member
Join Date: May 2005
Location: Marietta, Georgia
Posts: 4,321
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Re: Gear ID stamp on axle
Swing by when you get a chance and we will look for it. I was shown yeterday exactly where it is.
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04-11-2008, 06:42 PM
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#6 |
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Registered User
Join Date: Jun 2007
Location: Smyrna, GA
Posts: 709
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Re: Gear ID stamp on axle
Thanks, I'll drop by after work.
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Rottenwood Garage 1970...71...72 C1500 aka Orange aka Sideshow Bob 540 BB Straub Roller Cam, AFR Magnums, XP 950, TKO 600 2 Tons of Fun |
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04-11-2008, 07:04 PM
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#7 |
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The Older Generation
  
Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,929
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Re: Gear ID stamp on axle
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Until you can get together with 72FREAK this will give you something to ponder.... And a place to look it up when you find it. http://67-72chevytrucks.com/vboard/s...d.php?t=286975 Post #6 LockDoc
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Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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04-11-2008, 07:57 PM
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#8 |
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Registered User
Join Date: Jun 2007
Location: Smyrna, GA
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Re: Gear ID stamp on axle
Thanks Leon
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Rottenwood Garage 1970...71...72 C1500 aka Orange aka Sideshow Bob 540 BB Straub Roller Cam, AFR Magnums, XP 950, TKO 600 2 Tons of Fun |
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04-12-2008, 04:25 PM
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#9 |
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Registered User
Join Date: Jun 2007
Location: Smyrna, GA
Posts: 709
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Re: Gear ID stamp on axle
Well, I went over to David's and we found that stamp. It says I've got a 3.07 rear from the factory. So unless it's been changed, that's what I've got and I was told it was a 4.11 from the prev. owner which I could go along with seeing as I was pulling 3k rpm at 65 w/ my 31" tires.
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Rottenwood Garage 1970...71...72 C1500 aka Orange aka Sideshow Bob 540 BB Straub Roller Cam, AFR Magnums, XP 950, TKO 600 2 Tons of Fun Last edited by OrangeCrush1970; 04-12-2008 at 04:28 PM. |
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04-16-2008, 05:20 AM
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#10 |
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Registered User
Join Date: Feb 2008
Location: Madison, WI
Posts: 357
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Re: Gear ID stamp on axle
Mine says RHS 309
Anyone know what it is?
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04-16-2008, 05:36 AM
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#11 | |
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Registered User
Join Date: Aug 2006
Location: Alton, New Hampshire
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Re: Gear ID stamp on axle
Quote:
Mark
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04-16-2008, 03:32 PM
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#12 | |
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Registered User
Join Date: Jun 2007
Location: Smyrna, GA
Posts: 709
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Re: Gear ID stamp on axle
Quote:
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