What vehicle is this upper A-arm limiter blueprint for?

The title block identifies it as for a '73 T/A (Trans-Am) Mustang, by Maier Racing Ent.

What are the main dimensions of the limiter plate?

The plate is 5 1/2" long with two drilled and chamfered holes spaced 2" apart, a 1 1/4" width dimension with a 5/8" hole offset, and the two machine nuts are spaced 1 1/2" apart.

How are the nuts attached to the limiter plate?

The drawing calls out "WELD OR BRAZE, 2 EA. MACH. NUTS" — two machine nuts are to be welded or brazed onto the plate.

How many limiters are needed and what finish is specified?

The notes state "2 EA. NEEDED FOR RACE CAR" and that they are to be "PAINTED COPON BLACK." Bolts of proper size are to be furnished with the limiters.

Who drew this blueprint and when?

It was drawn by "W.G.A." and dated 3-6-79.

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1973 Mustang Trans-Am Upper A-Arm Limiter Blueprint - Maier Racing (1979)

Dimensioned drawing of a '73 Mustang upper A-arm limiter with weld and drill specifications

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Engineering drawing of a 1973 Mustang upper A-arm limiter with dimensions, weld/drill notes, and fabrication specifications.

AI caption July 2011 · Photo 102 of 274

This document is a hand-drawn fabrication blueprint on graph paper, dated 3-6-79 and drawn by "W.G.A.", for an "Upper A-Arm Limiter" for a '73 T/A (Trans-Am) Mustang, attributed to Maier Racing Ent. The drawing shows a rectangular plate/bar approximately 5 1/2 inches long and 1 1/4 inches wide, with two holes drilled and chamfered on 2-inch centers (5/8-inch dimension noted from edge/centerline). Two machine nuts, spaced 1 1/2 inches apart, are to be welded or brazed onto the plate (2 each). A detail view shows a hex nut welded to the plate. A pencil sketch at right illustrates the limiter's installed position relative to the front coil spring and upper control arm, with the front direction indicated. Handwritten notes state that 2 units are needed for the race car, that bolts of proper size are to be furnished with the limiters, and that the parts are to be painted "copon" black. A reader can learn the dimensions and fabrication method (weld or braze nuts, drill and chamfer holes) needed to reproduce this suspension travel limiter for a 1973 Trans-Am racing Mustang.

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Frequently asked questions

What vehicle is this upper A-arm limiter blueprint for?: The title block identifies it as for a '73 T/A (Trans-Am) Mustang, by Maier Racing Ent.
What are the main dimensions of the limiter plate?: The plate is 5 1/2" long with two drilled and chamfered holes spaced 2" apart, a 1 1/4" width dimension with a 5/8" hole offset, and the two machine nuts are spaced 1 1/2" apart.
How are the nuts attached to the limiter plate?: The drawing calls out "WELD OR BRAZE, 2 EA. MACH. NUTS" — two machine nuts are to be welded or brazed onto the plate.
How many limiters are needed and what finish is specified?: The notes state "2 EA. NEEDED FOR RACE CAR" and that they are to be "PAINTED COPON BLACK." Bolts of proper size are to be furnished with the limiters.
Who drew this blueprint and when?: It was drawn by "W.G.A." and dated 3-6-79.