76 Bumper Jack
Other than 76, are there other years jacks which are compatible with 76 TA bumpers?
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Most are 'the same', 79-81 required an adaptor. You wouldn't actually use one though, just for the collection.
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There is a fair amount of discussion on the 70-73 jacks, but little if anything on the 74-78 jacks.
I have two 79-80 jacks, but a third jack I have is supposedly a 1981 jack which does not use the adapter - rather it has a significantly flatter edge than the 79-80 jack. It might be beneficial to the OP if owners of original 1976 cars were willing to picture AND measure their jacks to ensure that it fits in the correct spot properly. I do know that somewhere after 1973 the space saver tire option came with an alternate jack mounting location (under the rear dash); I do not know if those jacks were supposed to be any different than the full sized spare cars. |
Thanks unruhjonny, that's the type of info I am looking for. any responses would help.
Yes, Trevor78, for show only. |
I can measure one later. I have 2 identical jacks to suit 78 models, neither came with my car. Earlier years also had different jack holders under the rear shelf, probably matches the 70-73 as mentioned. The jack was fairly universal too, supplied to many and not just GM, just the brackets and possibly base.
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Here are 2 older pictures of what sellers had listed for 76 bumper jacks. These are older sales and are sold.
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Quote:
One issue you will run across identifying the trapezoidal cross section type bumper jacks is in the 70's there are at least 3 different cross sectional sizes of the jack post. The smallest cross section style, & often the shortest jack post came in Vegas, Monzas, etc. The next bigger size cross sectionally was used in our A-body's & F-body's. The largest crosssection style with typicall 34" or longer jack masts & came out of B series (big cars) up through '76. I prob have two dozen original GM usage bumper jacks from the 70's & am still trying to ID half of them. The date on the rivet face ended after I believe '72(?) . The round hole in the side of the stamped jack mechanism is a telltale of a '73 & later bumper jack mechanism. The '76-78 original Firebird jack assemblies I've examined had black painted mechanisms. Did some '78's get a jack that the mechanism was corporate blue, I don't know. There were multiple suppliers for the bumper jacks. It also wasn't uncommon back in the day, for original bumper jacks to get pitched if they didn't work well & replaced with something similar out of a boneyard for $10. |
Of use? Yes, No? They weren't exactly just sitting around.
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i appreciated that;
i quite appreciated seeing where the date stamping moved. you gave a length, where the date codes were, and nice images of the mechanism; all should be helpful. hopefully the op will reply. |
THANK YOU TREVOR!! These pics are great and let me know what I can use. I've been seeing people selling jacks for 76's that look nothing like these. They have a long extended nose.
I have a lead on one right near me that I might pick up this week, thanks to these pictures. |
All good, wasn't sure if that was enough or not or for an original owner to say nope, theirs was different etc. Or just a 74-76 owner to reply in general.
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Probably also pics in the owners manual.
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Well, I picked up one that looks exactly like yours. It fit perfectly into the front bumper, but did not come close in the rear.
I also got one with an extended length pickup, and that fit into both front and rear. That's a picture of the left rear support. There are no slots in the bumper. Is there a chance, that is not the original bumper? |
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Here are pictures of a 1974 bumper jack. It was made after 1973. The other 1974 jack I have has no PATENT number or date other than on the rivet head.
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Different hook section to suit slotted chrome bumpers.
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I found the part number for the 76, but can't find it online.
The assembly manual shows part number 358356 with 329748 as optional. |
Since they don't have the part numbers on them, no one is going to advertise them with one. But you can tell from pics that isn't one.
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