LOL!
Its a 425 , I think , if i,m not mistaken , that was standard in 66 ?
From what I gather the 455 came along later .
I wired the Switch Pitch Tranny up to a toggle switch yesterday , an took her for a good drive , playing with the tranny , super cool

Now I have "Launch Control!"
Now I have to either get an Electronic Controller for it , or just stick with a switch ,
I would like to have the controller , but it,s a bit pricey , compared to a 4.99 switch
Some other things to do to the Beast , before spending money on the electronics