Re: Hi all...new guy here with some transmission questions

Posted by Anthony Pallett On 2013/4/27 4:43:43

From what I know from engine placement you want the carbs to sit level in the car. The tilt of the engines are usually a packaging issue but even a SBC with a factory intake the engine is tilted but the carb mounting flange is cut so it sits level (or close to it). The transmission will obviously follow the engine placement. With the rear end there is a bit of science involved and whole books have been written on how to properly set up rear suspension and its way to in-depth to go into here. just a generalization on it your pinion angle will be a few degrees down (as in the yoke is facing the road by 2-3 degrees from level) this allows for the pinion to raise up during acceleration to a "level" position. Remember the whole equal and opposite reaction thing from high school the wheels are moving one direction the axle housing and the pinion with it want to go the other way. In an ideal world you want to keep your yoke on the transmission, drive-shaft, and pinion in a straight line (in relation to how it will be under acceleration/ driving conditions) with no deviation top bottom left right ect. where it sits when the car is at rest really doesn't matter as long as its straight when the car is moving. having this done properly will aid in traction as well as free up some horsepower. You will see this in a lot of drag vehicles where the center section of the rear end is shifted to one side but by doing that the pinion is center to the drive-shaft/transmission/engine assemblies.