1955-1957 Chevy Triangulated 4-Link Kit Installation

This instructions is contains the installation for 1955-1957 Chevy Triangulated 4-Link Kit:
1. Begin by installing the Axle Brackets onto the housing at the distances shown in Figure 1. The Axle Brackets are symmetrical with the centerline of the housing. PLEASE NOTE THAT YOUR HOUSING “BANJO” WILL LIKELY BE OFF CENTER! For this reason, to locate the center of your housing, measure from the outside edge of each outer flange and mark the halfway point. As shown in Figure 2, your housing should be pointed down 2º from vertical, while all of the mounts (except for the angle brackets) should be vertical. The top face of the angle brackets will be horizontal. Once in place, tack weld them.
2. Install the lower crossmember. The crossmember is to be located 1” from the body mount and the top of the crossmember is 5/8” down from the top of the frame rail, as shown in Figure 3. You may have to trim the edges to fit between your frame rails (they vary from car to car). If so, make sure you trim an equal amount on both sides of the lower crossmember. Be sure the sides are exactly vertical. Tack weld in place.
3. Mock up the suspension using the 4 link bars to locate the triangulated frame mounts. Adjust pinion angle until it is correct—2º down. The center of the hole (marked “Hole A” in Figure 3) should be exactly 4-5/16” measured vertically from the center of the top hole on the lower crossmember, and exactly 13- 3/8” measured horizontally. This is extremely important in order to maintain proper suspension geometry. Do not modify this dimension.
4. Once the lower crossmember and the triangulated frame mounts are in place and while the suspension is mocked up, temporarily install the coil-over shocks. Front-to-back, they should be vertical, while at an inward angle when viewed from the front, as shown in the pictorial view below. This should give the approximate position of the upper crossmember. Make sure the shock mounts on the crossmember are level, and that the crossmember is located as shown in Figure 3. Tack weld in place.

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