question on c-notching

when you c-notch a car is this done pretty much for running bags or is this normal for lowering the rear end with dearching the springs?

 

C notching is done to provide more rear end travel when you lower a car. The notch does not care how the car is lowered. Basically, it gives the rear axle some place to go so you don't bottom out.

FONZI

 

C-notching is done anytime your axle is in danger of hitting the frame. Guys that want to "lay frame" will do an extreme notch sometimes referred to a "tower notch". This will give you the greatest amount of clearance but I wouldn't say it is what you'd do if you were just de-arching the springs.

A C-notch may be used in this case, especially if your axle is located on top of the springs or if you plan on "flipping" the axle to the top of the springs. A c-notch in this case will get you maybe 2" to 3" of additional clearance, depending upon the height of your frame rails. You have to be careful on the amount you remove and you will definitely have to box the inside of the rails to restore the strength.

In most cases, a c-notch would not be required if you're running air-bags. Your axle would most likely hit your bump-stops first. It all depends, how low do you want to go?

I'd do a search using "c-notch". You will find quite a few posts with good info.

Good luck