Good Evening All
It's been a while since I've posted; been working on a couple of vintage lawn tractors. Now that we are in the depths of winter, I've turned my attention back to the cars.
I would like to slow down the rpm's of the wife's '66 GTO tri-power 4 speed. The car is stock down to the 14" wheels and the 3:55 posi. Modifying the sheet metal is not an option.
I'm looking at either replacing the 3:55 with a 3:08 or a 4 speed overdrive if one is available that will bolt up to the stock bell housing.
What about a stock 3 speed overdrive from the late '50"s?
As always, all thoughts and comments are welcomed.