diffrence between TJ and ZJ spring (Height?)

[offroad86b2]

is there a diffrence in height,between front TJ springs and front ZJ springs?
If so how much?

[9T9BlueTJ]

Front Spring heights are about the same (ZJ's may be 1/2 a coil diameter taller IIRC). It is the diameter of the coils that is key.

I put on a 2" BB and front 5.9 V8 ZJ springs on mine and the front was even heightwise with the rear (put in rear Rubi springs 129's IIRC). That is with a 80 lb bumper and a 70 lb winch! 6 cylinder ZJ springs are the same coil diameter as TJ springs.