vintage stock car 8 3/4 rear

[Highbanked Hauler]

I believe that late 60s stock cars used a full floating  8 3/4 rear gear. I would think it would have to be like a 3/4 ton Dana axle in a truck.There must have been some kind of hub and drive plate assembly to keep from pulling axles out of the housing in the turns.  The idea is for my replica  69 stock car.  My other idea is go with a present day stock car rear with all the goodies and call it done. Ideas so I don't Thanks

[Ghoste]

Did they make an 8.75 with full floaters? 

[Mike DC]

A '69 replica stock car?  That's an interesting project.

As for the rearend, I don't know what they were doing in those days.  My offhand guess would be that they probably cut & welded stuff to install the same floater components that the Ford guys were using.  It wouldn't have been a big obstacle for a stock car team of that era to weld different ends onto a sheetmetal axlehousing, and it's not too hard to get custom axleshafts made either.

Whatever it was exactly, there's a bunch of surviving 1960s/70s stock cars still around today.  Just gotta take a look at one of them.  Full-floating rearends were one of the earliest modifications that became mandatory everywhere.  Axle failures on Hudson Hornets sent them flipping end-over-end during the mid-1950s and then everybody started running full-floaters pretty quickly after that.

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I've thought about the issue for a project too.  I came away thinking that it would probably be fairly easy to buy an aftermarket floater setup (components intended for a modern Ford 9" stock-car rearend) and just welding the appropriate ends onto a Mopar 8.75" Housing.  The amateur dirt-track community is full of those kinds of parts & kits for Ford 9" rears.  (Pick up any issue of a stock/dirt car magazine and look at the ads.)

 

[Highbanked Hauler]

I would imagine the  9" Ford  of today would have a  5" on 5" bolt pattern which isn't a problem in it self but you would have a 5 on 5 hub and drive plate.  I got to do some research on that.  I saw a Super Bird replica that a guy had done with a late model stock setup under the front with coils and a Franklin quick change in the rear but I'd like to keep the T bar set up.  The good thing about a 9" is you could have almost any gear setup