VIN letter code : Q
Displacement : 428 CID ( 7 Litres )
Engine ID Tag code : 420A
Engine type : 8 cylinder - 90 degree, OHV
Foundry group : Ford-Edsel ( FE )
Engine block casting # : C7AE-6015-C or F or C8AE-6015-R or C8ME ( These numbers includes SCJ )
Bore : 4.132"
Stroke : 3.984"
Engine crankcase : 6 quarts (includes 1 quart required for oil filter replacement.)
Horsepower (Gross) : 335Bhp @ 5,200 rpm
Torque : 440 lbs./ft. @ 3,400 rpm
Compression ratio : 10.6 to 1
Fuel required : Premium (at least 99.8 octane*)
Carburetor : Holley ( 4V ) 735 cfm
Carburetor casting # : ( A/T ) : D0ZF-9510-AB or AD-H-T ***
( M/T ) : D0ZF-9510-AA or AC-G-U ***
Engine firing order : 1-5-4-2-6-3-7-8
Intake manifold : (Cast iron) Casting # : C8OE-9425-C
Camshaft type : Hydraulic
Camshaft specs : Duration (int.) : 270 degrees
Duration (exh.) : 290 degrees
Lift (lobe/int.) : .278"
Lift (lobe/exh.) : .283"
Lift (valve/int.) : .481"
Lift (valve/exh.) : .490"
Overlap : 36 degrees
Cylinder head specs : Casting # : C8OE-6090-N
Combustion chamber (volume) : 72.8cc -75.8cc (quench type)
Valve diameter : (intake) 2.082" - 2.097" (exhaust) 1.645" - 1.660"
Port size ( WxH ) : (intake) 1.34" X 2.34" (exhaust) 1.28" X 1.84"
Valve train : Hydraulic shaft type
Notes: 16 bolt holes for exhaust manifold on each head. Each exhaust port is also threaded for emissions.
Distributor specs : Casting # : ( A/T ) : D0ZF-12127-G
( M/T ) : D0ZF-12127-C
Ignition timming : 6 degrees (point gap: .016 -.017")
Distributor type : Single - point set vacuum advance ( A/T only )
Dual - point set vacuum advance ( M/T only )
Spark plugs : Autolite BF-32 (gap: .032"- .036")
Exhaust manifold : Casting # : (Left side) C8OE-9431-B ***
(Right side) C9OE-9430-D *** ( No spacer required )
Rpm governor limit : 6050 - 6150 rpm ( available with S/T only )
Emissions controls : Thermactor
(50 states)
Exhaust system : Dual exhaust
Normal oil pressure : 35-60 psi @ 2000 rpm
Dimensions : 30"L x 27"W x 24"H (less air cleaner & exhaust)
Nominal weight : 610 lbs**
- Footnotes & Remarks -
* Octane as rated by the Research Method.
** Less alt., starter, fan, belts, & air cleaner.
*** Includes SCJ
