Ford Mod Motors - Swap In A 4.6

There are a couple of options for the fuel system. Fuel-injected applications will need a fuel pump and regulator, and if the computer is modulating the fuel pump, a return system. If you are running a carb, a low-pressure fuel pump will do.

The easiest backyard way to install a fuel system is to braze an additional pickup on the fuel tank and run a factory fuel-injection pump that is capable of producing more than 40 psi. If you want an exotic system, use a fuel cell from Fuel Safe with an internal pump, a -6AN feed to a regulator, and a -4AN return.

Modern Mustang clutches use a pull-type cable system. If you are swapping from an automatic, you can buy a pedal assembly so you can use a stock clutch. Complete conversion kits with a pedal go for about $300.

If you just want to plug a 4.6L two-valve in and go cruising, The Mustang Shop has test-fit the engine into a '67 to '73 Mustang/Cougar chassis to see what would happen. Pictured is the shock-tower trimming necessary to get it to fit. The company says it will need motor mounts and an aftermarket oil pan to make it work.

The Mustang Shop and RC Motorsports aren't the only ones offering swap systems. Griggs Racing can swap in a 4.6L four-valve using its tubular crossmember on the '64 to '73 chassis. This is the Year One '67 fastback Dynacorn body. Griggs' system is for any small-block or Windsor and is available for all modular motor applications for the '64 1/2-'70 Mustangs. If you are interested, you can also swap a modular into the 5.0L Fox platform.