Hi,
I have 55 gal drum full of original Corvette Jacks. I know they're dated but, does anyone have/sell a book or lit showing how, where they were dated? Any sure way to tell the difference in them? I've got some that are dated example:
9 J, or K 4 (stamp into cross brace)
Then I have another that is dated:
9 J 08 (stamped into threaded piece at handle end of jack)
Is there a way to determine a 69, 79, 89?
I also have other examples but can't remember them now.
I remember C1's not being stamped Correct?
Any help will be appreciated.
Thanks,
Terry

 

The quick answer is that some jacks are dated and others aren't. And, to further complicate the issue, IIRC, a lot of period Chevy jacks resemble the Corvette jacks.

Btw, do you have lug nut wrenches too?

Gary

 

I have a few wrenches but, right now I'm still trying to get these organized.

 

I could be interserd in a sept dated 66 corvette jack if you have one

 

Jack dating began somewhere in January 1967.

 

Thanks. Now, What years are the same? Example: 68-72? 73-79's? ETC?

 

This information will cost you a free jack!

C3 jacks were made either by Ausco (Auto Specialties Mfg Co) or by Stant Manufacturer’s Plant and most stamped with either an “A” or “smp” in lower case. Ausco made the jacks from 68-75 and Stant made em from 76-82. There were a couple years in the mid-70s that had no stamp. From 68-75, the format used was "3M" where the first digit is the year and the letter stands for the month (M=December) and is found on the outer arm near the cranking end. From 76-78, jacks used a three digit code 743" which represents the year of production (7=77) and the 43 the 43rd week of production and is found on the right side rivet head on the jack base. From 79-82, the code is 9B20" where we have year, month and day (1979, February 20th) and is found on the crossmember cranking end.

After 1979, a “Caution” label is stuck to the side. In 1980 the label is blue lettering on white and in 1981-82 the label is yellow with black printed letters. The label gave suggestions for the proper use of the jack to avoid “personal injury.” Original jack wrenches will have an anti-rattle boot on the hex end, a black foam collar.

You can see there are differences in the format and location of the code from 69 and 79 and probably as well 89 though I'm not familiar with the later.