Top loader tail shaft length?

[Hux 45]

Firstly thanks to everyone. This place is such an awesome community of interest on our 69/70’s and the knowledge base is amazing.

 

i have a 70 M code so 351c 4v. Under restoration and converting from the leaky old FMX to a top loader.  Scored a RUG-AG yesterday off the equivalent of craigslist.  Seller threw in a tail shaft which is a 28 spline but he had no idea if it was for this box or a T10 he was also selling.

 

so anyone able to share the length of what a stock tail shaft would be at all?

[lanky 44]

Just measured my small block toploader. Looks like exactly 14" if you put tape measure from rear of tailhousing diagonally to where tailhousing meets case. Meaning I didn't measure with a square on the rear side of tailhousing. Hope that helps.

[Hux 45]

Sorry mate not the tail of gearbox but drive shaft.  Might be the Aussie lingo difference that’s what a tail shaft is for us a tube with slip yoke to uni at diff.  

[unilec 57]

Probable a better idea is to measure the FMX from the back of the engine to the slip yoke and then compare the measurement with your top loader.

[lanky 44]

HAHA well I am definitely confused now. I think you mean the yoke length? 

[Hux 45]

No mate the actual shaft from end of gearbox to uni at the diff.  

:-)

[Brian Conway 264]

Driveshaft end to end.  Includes the U joint mounts.  Does not include the U joints or yoke.   Brian

[Hux 45]

Thanks Brian.  Much appreciated