Pictures are of the ps gear box from my '72 GS. The option code is N40 from the build sheet. I assume I have a quick turn ratio gear box. Correct? Comments?
Hey Gerry... I'm no expert. I just bought a quick ratio from Hector, and it had the "6" stamp that you show in your 2nd picture.
I removed the steering box and using a small pair of vice grips on the steering shaft, turn to turn, was about 3 1/3 just like in the shop manual (3,30).
Sounds like the stock variable ratio box for the car. The ratio is about 16:1 at the center reducing to 13:1 at the ends of steering travel left and right. The fast ratio boxes are 12:1 constant I believe and are more like 2.75 turns lock to lock. Years ago, I bought a box from Year One. It was marketed as a fast ratio. It is 2.75 turns lock to lock in my 70 GS.
