2006 Ford Racing Performance Parts Catalog

INLET ADAPTER (1994-95 MUSTANG)
M-9927-A50*
This adapter allows use of GT-40 EFI manifolds on 1994-95 Mustangs.
Must be used with the new M-9926-B50 throttle body. Installation of GT-40
EFI manifolds requires minor modification to the hood blanket, and use of
Ford Racing strut tower brace kit M-20201-A51 (see page 147).
EFI HI-FLOW EGR SPACER
M-9474-A50*
This EGR spacer has been machined to a 67mm
bore diameter to be compatible with the Ford
Racing 65mm throttle body. Can be used with
either production or Ford Racing EFI manifolds.
Requires minor modification to production upper
intake manifold to achieve optimum results.
EFI THROTTLE BODY-TO-
EGR SPACER GASKET
M-9933-A50* 1986-93 Mustang
M-9933-B50** 1994-95 Mustang
This gasket is manufactured with a 67mm bore
diameter to accommodate the Ford Racing 65mm
throttle body and EGR spacer. Fits between the
throttle body and spacer.
EFI HEAT SPACER
M-9486-A51* Stock 5.0L Manifold - .5"
M-9486-A52* GT-40 Manifold - .5"
M-9486-A53* GT-40 Manifold - 1" thick
for clearance with
M-6582-E302 Valve Covers
New and improved quality, made in the USA. CNC
machined from Westinghouse. Type C phenolic
material fits between the upper and lower
manifolds to help dissipate heat and significantly
increase performance. Includes longer bolts.
*Not legal for sale or use on pollution-controlled motor vehicles. **Direct replacement part.
GT-40 Stock 5.0L
EFI UPPER-TO-LOWER
INTAKE MANIFOLD GASKET
M-9486-A50*
This gasket is required to assemble the Ford
Racing upper intake manifold (M-9424-A51
or M-9424-D51) to the lower intake manifold
(M-9461-A50 or M-9461-A58).
EFI MUSTANG FUEL PUMP
M-9407-C50* (190 liters/hr.) 1986-97
This high-flow, fuel tank mounted fuel pump
eliminates top-end fuel starvation on modified
5.0L EFI HO engines. Production flow rates of
88 liters/hr. (1988-93, 1994 and up 110 liters/hr.)
will be increased to a whopping 190 liters/hr.
@ 40 psi with M-9407-C50.
ELECTRONIC FUEL INJECTION “SPEED DENSITY” VS. “MASS-AIR” COMPARISON
Computerized electronic engine controls and fuel injection make it more
difficult to improve engine performance. More sophisticated approaches
are required—such as Ford Racing’s “Mass Air Conversion Kit” for
Mustang 5.0L HO engines with manual transmission. Here is a brief
review of key factors:
Remembering that engines are basically air pumps, the basic problem
for an EEC-IV computer is to determine airflow for any given throttle angle
and engine RPM, so it can signal appropriate fuel flow to mix with the air.
The 5.0L HO uses two types of fuel control. 1986-87 and 1988
49-State vehicles use a SPEED DENSITY system—in which airflow is
inferred from several sensors, including measurements of engine speed,
manifold pressure and air charge temperature, along with an approximation
of the engine’s pumping characteristics. The 1988 Calif. and all 1989-95
models use a MASS-AIR system—in which airflow is measured directly
with an air meter. A “hot wire” sensing element in the air intake provides
an output voltage reading that is proportional to the mass of air flowing
into the engine.
The mass air system reduces the calculations required to control fuel flow
and ignition spark advance—while providing the versatility required
for performance modifications affecting airflow and manifold vacuum.
It reacts faster and more accurately to changes in airflow, and improves
idle quality and overall vehicle performance.
Voltage Output
Mass Air Flow
EGR SPACER-TO-INTAKE
MANIFOLD GASKET
M-9464-A50*
This gasket is manufactured with a larger 70mm
bore diameter to accommodate the Ford Racing
65mm throttle body and EGR spacer. Fits between
EGR spacer and intake manifold. If you have ever
tried to modify the production gasket to fit a larger
spacer, you will truly appreciate these pieces.
Also use with M-9927-A50 adapter.
www.fordracingparts.com 113
ENGINE
COMPONENTS