Using a Ford 5.0 GT-40 EFI system in a Type 65 Coupe can cause hood clearance problems. This will document what you can and cannot use to install into the Coupe.Note:
* This information only applies to GT-40 intake systems.
* It is assumed that a phenolic spacer of between 3/8 and 1/2 inch in thickness.
* You plan to use the EGR system. (There is no reason not to use EGR on a 5.0 EFI engine and not using one can cause problems.)
* EFI computer is from 1989 to 1993.
* Engine mounts are from convertible Mustang.
Since the majority of the Ford performance EFI systems use the 1989 to 1993 computer, then the starting point for the design is a A9L or A3M1 Ford Mustang computer. With this mind, the plan is to use parts that are compatible with those engine/computers.
The starting point was:PART(S)
* 1993 Cobra GT-40 lower intake manifold (M-9461-A50, F3ZZ-9424-D)
* 1993 Cobra GT-40 upper intake manifold (M-9424-A51, F3ZZ-9424-C)
* 65mm throttle body (M-9926-A302)
* 67mm EGR spacer (M-9474-A50)
With this combination, there was clearance problems. The top of the throttle body and EGR spacer both hit the hood preventing the hood from closing.
The back of the EGR valve hit the frame.
In 1994 the Ford Mustang had body changes. The nose of the car was sloped downloads. Ford changed the 5.0 intake so it would fit under the new hood. Since the hood of the Type 65 Coupe was also sloped downward, it was logical to see what solutions could be applied from the 1994-1995 Mustang.PART(S)
The first step was to use the Ford Racing inlet adapter (M-9927-A50) which is required to fit a pre 1994 GT-40 intake on a 1994-1995 Mustang.DELETE
* 67mm EGR spacer (M-9474-A50)ADD
* Ford Racing inlet adapter (M-9927-A50)
With this change, there was clearance problems with EGR boss on the adapter.
You can keep this combination if you grind down the bottom of the EGR boss to gain clearance between the elbow and the valve cover.SOLUTION #2
You can keep this if you change to stock aluminum EFI valve covers or the stamped steel ones.SOLUTION #3
If you want, you can change to the 1994-1995 intake system.
* GT-40 upper intake manifold (M-9424-A51)
* 65mm throttle body (M-9926-A302)ADD
* 1994-1995 Cobra R GT-40 upper intake manifold (M-9424-A51, F4ZZ-9424-C)
* 65mm throttle body (M-9926-B50)RESULT
This solved all the clearance problems with the hood. This setup requires that you use 1994-1995 stamped steel valve covers. They can be the plain or COBRA stamped ones. This setup gives the least amount of problems with clearance. The trick is to use the upper intake, throttle body, EGR, and throttle linkage from a 1994-1995 5.0 Mustang 5.0 and everything else from a 1989-1993 5.0 Mustang. I plan to give a full parts list when I get the chance to document it.
With this combination, you can use the intake hose from a 1987-1993 5.0 Mustang. I created my own mounting bracket, but you could use your own design.
If you have any questions or comments, please post them