Dear Welder Series…
Just curious, how much below the bottom of the frame does your Mustang II crossmember come down?
Mike, the answer to this depends on the distance from the ground to the bottom of your frame at the ride height you want, the tire size you will use, and if you are using stock or dropped spindles.
The bottom of our crossmember is 1-5/8″ lower than the center of the lower control arm pivot bolt. The stock spindle height will be about 3-1/2″ higher than the lower arm pivot bolt. A dropped spindle will be about 2″ higher than stock. (The top of our crossmember is about 5/8″ higher than the lower arm pivot bolt center.) The rack sits higher than the top of the crossmember. The engine should not be installed until the rack is in place to be sure the pan clears.
An advantage of our crossmember is that you decide how you want the frame to sit and we tell you how to notch our crossmember and towers to achieve this ride height.
It’s easier to tell you how much ground clearance you will have for a given tire diameter. Suppose your front tires are 27″ diameter. The spindle will be about 13″ from the ground. (1/2 of the diameter minus 1/2″ for tire “squat” with weight on it.) With stock spindles, the bottom of our crossmember will be about 9-1/2″ from the ground. (13 minus 3-1/2.) The bottom of the crossmember will be 2″ lower (about 7-1/2″) with dropped spindles.
Thanks for a good question. I hope this answer helps.