Length of J-bolt for spare in trunk

[ZLP955]

Could someone with a 69 Z please confirm the finish, correct overall length, and thread length, of the original factory J-bolt hook that is used to hold down the 15" spare in the trunk?
Thanks in advance for any help.

[cam69aro]

i will try to get a pic of it tonight, i don`t have a spare bolted down and it is still original finish. will post info as soon as i can for you.

[cam69aro]

ok, i resized a few pics Tim, also send you a pm. im not sure if the J hook was ever plated or had a finish. the bolt was for sure, shiny om back side but worn and rusted off the front side

[69Z28]

Hmmmm...6 inches long. I'll have to look at mine tomorrow but mine may be a little longer...I think....but who knows after 40 years and not being original owner.

[cam69aro]

check your hold down nut too Gary, see if it was plated like mine. the more i look at the pic of my J hook it looks like maybe it was phosphate plated maybe ?

[69Z28]

Eldon. I think mine may be zinc plated but will have to look to make sure. I can check my survivor 69 Impala too, probably no difference with them, but who knows. Maybe Bentley or GaryW still have originals. Lloyd should have his original too.

[ZLP955]

Great, thanks for the pictures. Much appreciated.

[rszmjt]

hhmmm.

My 06A Z28 J bolt is 9&3/4" long dark coloured grey or Black/ phosphate and the wingnut is silver cad. Non space saver. Owned the car since 74.

[cam69aro]

well i bought my car from the 2nd owner in `96 (he got it in `70 for a grad present) and i never had a spare mounted in the car yet but will asap. i have a full spare set of YH wheels and will make sure the hook is long enough. i hope it is right or i will be scrounging the junkyards for one. what year Z ?

[cam69aro]

rs, how much of the hook threads stick out when the nut is down tight ? now im wondering if mine is right or not. oh well, i will find out when i bolt a spare down.

[ZLP955]

Interesting, the one pictured did look quite short. Assuming you use the jack base, and then the special curved wingnut, to secure the spare, wonder if that'd run out of length? I didn't mention bolt length for space saver spare because I thought that was only an option with 14" wheels, is that correct? I know the coupes and convertibles used different bolts due to the position of the spare in the trunk, maybe the 'vert has the shorter one?

[rszmjt]

rs, how much of the hook threads stick out when the nut is down tight ? now im wondering if mine is right or not. oh well, i will find out when i bolt a spare down.

Don't know how much thread sticks up when the spare is installed, but just the threaded section is 5&1/4".
Wing nuts are not all the same BTW.  Correct wing nut is 4&1/2" wide total and there is a small protruding section/collar where it goes through the jack base.

I will post a picture later, as well as wing nut differences.
I have owned this 69 RSZ28 since 1974, 42,000 mile survivor , Canadian Docs.

[ZLP955]

Mike, pics would be much appreciated when you have an opportunity.
Thanks, Tim

[rszmjt]

Sorry, It was in the trunk of my car which was up on a drive on hoist in storage.

[rszmjt]

Wing nut