CHASIS COMPONENT ASSEMBLY
Another component to put on is the motor to frame mounts. Actually this is best done before mounting the lower front control arms. You will have better access. I used polyurethane motor mounts for the 454 big block. Mount using grade 8 hardware.
Take all the ratio measuring tools off the box and bolt it up to your frame using (3) 7/16-14 x 4.5”long bolts to 64 ft-lbs. The pitman arm is keyed so it is easy to put on. Tighten up the pitman arm nut to 180 ft-lbs. This box has slightly less travel for the steering from side to side. But in my case it is a good thing. The B-body spindles I added (mentioned in earlier articles) limited the travel a little anyway and with the wide tires I am planning on putting on the front, the slight reduction in steering travel will be just perfect to keep the tires from rubbing the inner fender wells.
Bolt up the Idler arm, center link and tie rod ends with the proper torques listed below. I use the Edelbrock Heavy-Duty tie rod sleeves. These are mad of steel not aluminum like others make. There are 2 sizes. 70 and earlier used the smaller 5/8”, where as the 71-72 use the larger 11/16” threads to match up with the tie rod threads. The 5/8” ones are p/n: 350-5250 at Jeg’s for $36.99/pr.