REMOVING THE FUEL PLATE AND INSTALLING GOVERNOR SPRINGS ON OUR PROJECT 12-VALVE

While we were pretty forthcoming with our 10-second, 1,000 hp goals for our 12-valve “Green Monster” project, it was hard not to do a few little things first. After all, ’94-to-’98 12-valve P-pump Dodges are some of the most sought-after, reliable trucks out there, even in slightly modified form.

For our first trick in the book, we’d take a look at turning up the fuel and installing governor springs to raise the engine’s rpm limit. This modification will be important later, because we’ll need a little extra engine speed to dial in the shifting on the transmission.

Fuel Plate Access

Our first modification concerned the fuel plate of the P7100 injection pump, which is used to limit the fueling of the engine. The fuel plate, along with the AFC (air fuel control), is what determines how much fuel gets injected into the engine. This is a fairly simple modification that a shadetree mechanic can perform …as long as they are careful in a few certain spots.

To access the fuel plate, the AFC housing must first be removed, which includes a tamper-proof screw. The preferred method of dealing with this is to use a very sharp chisel to tap a slat in the screw and then turn it with a screwdriver. However, we’ve seen a lot of mangled ones, so this is one of those areas where being precise pays off.