looking at parts stores there doesn't seem to be a consensus if the cable should be 55, 69, or 73"

also, before I contort myself into a pretzel to check it out... is the speedometer end the push on connector or are both ends screw on?

that being said..  I am asking because my 1 piece tko-600 speedo cable is leaking (through the pressed on fitting, not the o-ring

im thinking of getting a stock style cable and a cable adapter instead of the one piece cable as replacing these cables is a pain in the ass.  do you think the adapter is less likely to leak?

My '73 has a screw-on to the transmission and a push-on to the speedometer.

1973 L-82 4 spd

Ben, if you drain the oil out of the trans, the cable will stop leaking. It's simple physics....😂🤣

Iirc, the cable on my '74 was around 70 inches, but...it's been almost 30 years since I last replaced it, so....

Is the speedo fitting on your trans on the driver side or passenger side? Pass side needs a longer cable than driver side, just fyi. and yes, the fitting for the gauge is a quick connect/push on type. 

I kinda like the idea of using an adaptor so you could source a "normal" speedo cable....that could be handy, and cheaper in the long run.

Joel Adams
C3VR Lifetime Member #56    
My Link


(click for Texas-sized view!)             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"

I ordered a 69" as the current is 55" and makes too tight of a turn IMO

I also ordered the fancier adapter from summit, has multiple seals and hopefully wont leak.