My 71's right tie rod assy is 1/2" shorter than the left. I have always felt that unequal length tie rods will affect the tire turning radius... kinda like ackerman. I cannot rationalize why, but it is something I have felt is true. True, or not? And why. I also noticed my pitman arm does not point straight rearward. My idler and pitman are not parallel to each other. My steering wheel is straight, also the upper shaft's center punch mark is straight up. The steering gear is centered.. I pulled off the pitman, the steering wheel turns 3 turns lock to lock. Turned the wheel back 1.5 turns, and steering wheel is now back to straight. The pitman arm is not parallel to the frame, I think the idler was parallel to the frame. The pitman does not point straight back. It is probably off to the drivers side by 20 degrees? Normally when a gear is centered the pitman will be directly pointed to the rear. I did check if the steering arms were bent, both right and left arms were withing 1/16 of each other. When measuring the drag link, it is, say... 24"'s. The sector shaft to idler pivot is about 23.5 " 's. Measuring across the diagonals also do not add up. I expected both to be the same. My question is why did GM do this? What were they thinking? Have any of you measured, or modeled the geometry of your steering, or front suspension/ alignment.? ackerman, camber/ caster curves, bump steer, tire scrub, antidive. I raced a dirt modified 12 years ago. I had a computer program that helped a ton on front suspension geometry. I spent a lot of time on my dirt car to make the steering and suspension work they way I needed it to with great success. I am now very interested in modeling this car.