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#1 |
CAN'T FIX NOTHIN
Join Date: Sep 2006
Location: SOUTHRUST VIRGINIA !!!
Posts: 2,112
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I'd like to know for sure what rear end ratio my 67 came with , I have the original protect-o-plate with the truck from when it was new and I know those code's are on there , it will have a code that will tell if it's a 3.73 or 4.11 , if anyone can do this I will post it this evening , thank's ,,,,,
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1967 C10 Shortbed Fleetside Small back glass 6 cyl 3spd on the tree 3.08 gears underdash AC |
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#2 |
Nothing to see here.....
![]() Join Date: Jun 2007
Location: Shawnee, KS
Posts: 4,625
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Re: can someone on here DECODE my protect-o-plate ?
I believe the protect-o-plate has the rear end code stamped in. post up a pic when you have a chance. I'll try to decode it tonight.
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Doug ![]() ![]() The democracy will cease to exist when you take away from those who are willing to work and give to those who would not. Thomas Jefferson |
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#3 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: can someone on here DECODE my protect-o-plate ?
i'm pretty sure the 4.11 only came in over drive trucks (1/2 ton) and you should have a 3.73 gear.
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#4 |
Registered User
Join Date: Nov 2000
Location: Carver County, Minnesota, USA
Posts: 626
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Re: can someone on here DECODE my protect-o-plate ?
Your POP will list the rear axle build code, ie that is a Chevrolet axle, the build month, build day, and the plant. The build code doesn't include the gear ratio.
On a 1967 GMC POP I happen to have, that _does_ have the axle ratio embossed on it, seperate from the axle build code, but not the Chevrolet POP's apparently. If you would have had the 3/4T or 1T Eaton axle in it, the 3rd member would have the axle ratio code stamped on it; else the gear ratio would be on a metal tag on the differential cover, but that's probably gone by now. If you still are out of luck, you can jack it up and spin the wheel and count wheel rev's to pinion rev's, do the math and come close the the axle ratio w/o pulling the diff cover.
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72 Chev C-10 90% restored (former AZ truck) ... 71 Chev K-20 Cheyenne my vacation crusier... 72 Chev C-10 Now retired and striped after many faithful miles... 72 GMC 1500 Retired to the junk yard after bought new in '71... |
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#5 |
Registered User
Join Date: Feb 2007
Location: west coast
Posts: 3,373
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Re: can someone on here DECODE my protect-o-plate ?
Good technical question. Protecto plates and build sheets were the only positive way of matching the vin # with the powertrain combo. For 1967, HB is 3.07, HA,HC,MD is 3.73, HD, JQ is 4.11. Remember Protecto Plates were stamped backwards so they came be pressed in ink to be transferred to an invoice.
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