1978 Ford Mustang Mechanical Information & Drawings

Transmissions

As anyone knows, parts for the 1974 – 1978 Mustang II’s can be hard if not impossible to find. A little known swap that can be used involves the rear engine mount also called the Transmission Crossmember. Use a 1968 Mustang automatic transmission crossmember with your 1975-1978 C4 equipped Mustang and only make 1 little modification. Centered between the two crossmember mounting bolts left and right and centered between the front and rear of the crossmember, drill or torch or plasma cut a small round or oval 1.25 inch hole. This crossmember will work great. A friend (Bobby) and I were working on his Cobra II and he needed a transmission crossmember. I had a spare old 1968 one laying around. We wanted to see if it would fit and it did, except he noted that a drop down safety bolt would not go through the crossmember. The solution, I set up my plasma cutter and he cut our a round hole. It fit and worked like a champ.