Block casting date code location
- Value
- Cast near the oil filter adapter on the lower engine block next to the oil pan
- Application
- 428 Cobra Jet engine block date verification
- Type
- block / date code
Source states the casting date should precede the car build date by at most a few months.
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
Block casting date location
- Value
- Casting date should precede vehicle build date by no more than a plausible few-month window
- Application
- 428 Cobra Jet engine block date-correctness check
- Type
- block / date code
- Location
- Bottom of engine block near the oil filter adapter and oil pan rail
Sources: Hard Core Resto Tech: Detailing a 428 Cobra Jet Engine, Version 1.3
Block casting date location
- Value
- Casting date next to oil-filter adapter
- Application
- 428 Cobra Jet engine dating check in cited detailing reference
- Type
- block / date code
- Location
- Next to oil-filter adapter
Source states the casting date should precede the vehicle build date by no more than a few months.
Sources: Hard Core Resto Tech: Detailing a 428 Cobra Jet Engine Part 1
Block construction
- Value
- controlled-microstructure improved cast iron block with standard two-bolt main bearing caps
- Application
- production 428 Cobra Jet block description
- Type
- block / specification
Sources: Autolite-Ford High Performance Parts: Venom Under the Hood - 428 C.J.
Bore and stroke
- Value
- 4.132 x 3.984 inches
- Application
- 1969 Fairlane/Torino/Cobra 428-4V engine family
- Type
- block / specification
Sources: 1969 Fairlane/Torino/Cobra AMA Specifications
Cobra Jet block rear bulkhead scratch mark
- Value
- C scratch with reinforced crank saddle webbing
- Application
- 428 Cobra Jet block, June 1967-March 1970 range
- Type
- block / stamp
- Location
- Rear bulkhead of engine block
Sources: Hard Core Resto Tech: Detailing a 428 Cobra Jet Engine, Version 1.3
Cobra Jet reinforced-web block marker
- Value
- C-scratch
- Application
- 1968-1970 428 Cobra Jet production-car block identification context
- Type
- block / stamp
- Location
- Rear of engine block
Use with block date code and vehicle build date; this row is not proof for any individual car by itself.
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
Rear block sand-cast marker
- Value
- C
- Application
- Typical 428 Cobra Jet FE block in cited detailing reference
- Type
- block / other
- Location
- Rear of engine block
The same source contrasts A-marked standard 428 passenger-car blocks and unmarked blocks; use as component evidence, not standalone vehicle identity proof.
Sources: Hard Core Resto Tech: Detailing a 428 Cobra Jet Engine Part 1
Rear bulkhead scratch mark
- Value
- C scratch on rear bulkhead with reinforced crank saddle webbing
- Application
- 428 Cobra Jet block, June 1967-March 1970 coverage in source guide
- Type
- block / specification
Guide presents this as a typical Cobra Jet block identifier; not a substitute for car-specific inspection and date-code matching.
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
1969 Cobra Jet carburetor engineering number, automatic transmission
- Value
- C9AF-9510-N
- Application
- 1969 428 Cobra Jet with automatic transmission
- Type
- carburetor / engineering number
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
1969 Cobra Jet carburetor engineering number, manual transmission
- Value
- C9AF-9510-M
- Application
- 1969 428 Cobra Jet with manual transmission
- Type
- carburetor / engineering number
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
1969 Cobra Jet Holley list number, automatic transmission
- Value
- 4280
- Application
- 1969 428 Cobra Jet with automatic transmission
- Type
- carburetor / carburetor list
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
1969 Cobra Jet Holley list number, manual transmission
- Value
- 4279
- Application
- 1969 428 Cobra Jet with manual transmission
- Type
- carburetor / carburetor list
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
1970 428 Cobra Jet Holley carburetor engineering number, automatic transmission with A/C
- Value
- D0ZF-9510-AD
- Application
- 1970 428 Cobra Jet, automatic transmission, with air conditioning
- Type
- carburetor / engineering number
- Location
- Carburetor air horn or ID tag when present
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
1970 428 Cobra Jet Holley carburetor engineering number, automatic transmission without A/C
- Value
- D0ZF-9510-AB
- Application
- 1970 428 Cobra Jet, automatic transmission, without air conditioning
- Type
- carburetor / engineering number
- Location
- Carburetor air horn or ID tag when present
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
1970 428 Cobra Jet Holley carburetor engineering number, manual transmission with A/C
- Value
- D0ZF-9510-AC
- Application
- 1970 428 Cobra Jet, manual transmission, with air conditioning
- Type
- carburetor / engineering number
- Location
- Carburetor air horn or ID tag when present
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
1970 428 Cobra Jet Holley carburetor engineering number, manual transmission without A/C
- Value
- D0ZF-9510-AA
- Application
- 1970 428 Cobra Jet, manual transmission, without air conditioning
- Type
- carburetor / engineering number
- Location
- Carburetor air horn or ID tag when present
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
1970 428 Cobra Jet Holley list number, automatic transmission with A/C
- Value
- 4516-1
- Application
- 1970 428 Cobra Jet, automatic transmission, with air conditioning
- Type
- carburetor / carburetor list
- Location
- Carburetor air horn or ID tag when present
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
1970 428 Cobra Jet Holley list number, automatic transmission without A/C
- Value
- 4514-1
- Application
- 1970 428 Cobra Jet, automatic transmission, without air conditioning
- Type
- carburetor / carburetor list
- Location
- Carburetor air horn or ID tag when present
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
1970 428 Cobra Jet Holley list number, manual transmission with A/C
- Value
- 4515-1
- Application
- 1970 428 Cobra Jet, manual transmission, with air conditioning
- Type
- carburetor / carburetor list
- Location
- Carburetor air horn or ID tag when present
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
1970 428 Cobra Jet Holley list number, manual transmission without A/C
- Value
- 4513-1
- Application
- 1970 428 Cobra Jet, manual transmission, without air conditioning
- Type
- carburetor / carburetor list
- Location
- Carburetor air horn or ID tag when present
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
Automatic-transmission carburetor
- Value
- C8OZ-9510-AB
- Application
- production 428 Cobra Jet with automatic transmission
- Type
- carburetor / part number
Ford high-performance booklet says the 735-cfm 4V carburetor must be matched to transmission type.
Sources: Autolite-Ford High Performance Parts: Venom Under the Hood - 428 C.J.
Carburetion class
- Value
- 4V
- Application
- 1969 Fairlane/Torino/Cobra 428 power teams listed in AMA specifications
- Type
- carburetor / specification
Sources: 1969 Fairlane/Torino/Cobra AMA Specifications
Carburetor airflow rating
- Value
- 735 cfm 4V
- Application
- production 428 Cobra Jet carburetion
- Type
- carburetor / specification
Sources: Autolite-Ford High Performance Parts: Venom Under the Hood - 428 C.J.
Carburetor application-number and date-code stamp location
- Value
- Air horn in front of choke plate
- Application
- 428 Cobra Jet Holley carburetor in cited detailing reference
- Type
- carburetor / stamp
- Location
- Carburetor air horn in front of choke plate
Sources: How to Detail a 428 Cobra Jet Engine Part 2
Carburetor date-code stamp location and format
- Value
- Year/month/week format stamped in the air horn in front of the choke plate
- Application
- 428 Cobra Jet Holley carburetor date verification
- Type
- carburetor / date code
Source gives examples for month decoding, including 0=October, A=November, and B=December.
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
Carburetor flow rating
- Value
- 735 cfm
- Application
- Regular-production Ford 428 Cobra Jet V8 four-barrel carburetor specification
- Type
- carburetor / specification
The reviewed source records the flow rating, not a carburetor list number or tag for a specific Cyclone GT.
Sources: 1968 Ford Hi-Performance Parts Catalog, 428 Cobra Jet section
Carburetor metering block identifiers
- Value
- 5673 front metering block; 5671 rear metering block
- Application
- 428 Cobra Jet Holley carburetor
- Type
- carburetor / specification
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
Cobra Jet Holley carburetor airflow rating
- Value
- 735 cfm
- Application
- 428 Cobra Jet engines in cited detailing reference
- Type
- carburetor / specification
Sources: How to Detail a 428 Cobra Jet Engine Part 2
Front metering-block stamping
- Value
- 5673
- Application
- 428 Cobra Jet Holley carburetor in cited detailing reference
- Type
- carburetor / part number
- Location
- Front metering block
Sources: How to Detail a 428 Cobra Jet Engine Part 2
Holley carburetor date-code location
- Value
- Application/list number and date code stamped in air horn in front of choke plate
- Application
- 428 Cobra Jet Holley carburetor identification check
- Type
- carburetor / date code
- Location
- Air horn in front of choke plate
Sources: Hard Core Resto Tech: Detailing a 428 Cobra Jet Engine, Version 1.3
Holley carburetor ID-tag location
- Value
- Aluminum ID tag on passenger-side choke assembly
- Application
- 428 Cobra Jet Holley carburetor identification check
- Type
- carburetor / other
- Location
- Passenger-side choke assembly
Sources: Hard Core Resto Tech: Detailing a 428 Cobra Jet Engine, Version 1.3
Manual-transmission carburetor
- Value
- C8OZ-9510-AA
- Application
- production 428 Cobra Jet with manual transmission
- Type
- carburetor / part number
Ford high-performance booklet says the 735-cfm 4V carburetor must be matched to transmission type.
Sources: Autolite-Ford High Performance Parts: Venom Under the Hood - 428 C.J.
Original Cobra Jet carburetor airflow rating
- Value
- 735 cfm Holley four-barrel
- Application
- 428 Cobra Jet production engines
- Type
- carburetor / specification
Source spells Holley as Holly; normalized here to Holley.
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
Rear metering-block stamping
- Value
- 5671
- Application
- 428 Cobra Jet Holley carburetor in cited detailing reference
- Type
- carburetor / part number
- Location
- Rear metering block
Sources: How to Detail a 428 Cobra Jet Engine Part 2
Connecting rods
- Value
- special high-strength type used in 428 Police Interceptor engines with larger 11/32-inch cap bolt and nut retention
- Application
- production 428 Cobra Jet connecting rod description
- Type
- connecting rod / specification
Sources: Autolite-Ford High Performance Parts: Venom Under the Hood - 428 C.J.
428 Cobra Jet crankshaft
- Value
- C6AZ-6303-B
- Application
- production 428 Cobra Jet crankshaft; Ford notes flywheel-installed balance requirement
- Type
- crankshaft / part number
Sources: Autolite-Ford High Performance Parts: Venom Under the Hood - 428 C.J.
Cobra Jet 428 cylinder head
- Value
- C8OZ-6049-F
- Application
- Cobra Jet 428 heads fitting Ford big-block wedge engines
- Type
- cylinder head / part number
Sources: Autolite-Ford High Performance Parts: Venom Under the Hood - 428 C.J.
Cobra Jet 428 cylinder head casting
- Value
- C8AE-6090-J
- Application
- Cobra Jet 428 heads fitting Ford big-block wedge engines
- Type
- cylinder head / casting number
Sources: Autolite-Ford High Performance Parts: Venom Under the Hood - 428 C.J.
Cobra Jet cast-iron cylinder head engineering number
- Value
- C8OE-6090-N
- Application
- 1968-1970 428 Cobra Jet production-car cylinder head reference
- Type
- cylinder head / engineering number
- Location
- Cylinder-head casting/engineering number area
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
Cobra Jet cylinder head engineering number
- Value
- C8OE-6090-N
- Application
- 1968-1970 Cobra Jet production cars
- Type
- cylinder head / engineering number
Source identifies thermactor inlet ports at each cylinder with this head engineering number.
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
Cobra Jet cylinder head engineering number
- Value
- C8OE-6090-N
- Application
- 1968-1970 Cobra Jet production engines
- Type
- cylinder head / engineering number
- Location
- Outside of the cylinder head casting
Sources: Hard Core Resto Tech: Detailing a 428 Cobra Jet Engine, Version 1.3
Production Cobra Jet cylinder-head engineering number
- Value
- C8OE-6090-N
- Application
- 428 Cobra Jet production cylinder heads in cited detailing reference
- Type
- cylinder head / engineering number
- Location
- Outside of cylinder head
Sources: Hard Core Resto Tech: Detailing a 428 Cobra Jet Engine Part 1
1969 Cobra Jet distributor engineering number, automatic transmission
- Value
- C8OF-12127-J
- Application
- 1969 428 Cobra Jet with automatic transmission
- Type
- distributor / engineering number
reference lists this under 1969 automatic distributor application.
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
1969 Cobra Jet distributor engineering number, manual transmission
- Value
- C8OF-12127-H
- Application
- 1969 428 Cobra Jet with manual transmission
- Type
- distributor / engineering number
reference lists this under 1969 manual distributor application.
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
1970 428 Cobra Jet distributor engineering number, automatic transmission
- Value
- D0ZF-12127-G
- Application
- 1970 428 Cobra Jet, automatic transmission
- Type
- distributor / engineering number
- Location
- Distributor body
Distributor dates use a Year/Month/Day sequence in the detailing reference.
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
1970 428 Cobra Jet distributor engineering number, manual transmission
- Value
- D0ZF-12127-C
- Application
- 1970 428 Cobra Jet, manual transmission
- Type
- distributor / engineering number
- Location
- Distributor body
Distributor dates use a Year/Month/Day sequence in the detailing reference.
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
Distributor date-code format and visibility
- Value
- Year/month/day sequence stamped on distributor body
- Application
- 428 Cobra Jet distributor date verification
- Type
- distributor / date code
- Location
- Back of distributor when installed
Source states these distributors are single-point for 1968-1969 Cobra Jet applications covered by the table.
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
Production distributor type
- Value
- single-point dual-advance distributor
- Application
- production 428 Cobra Jet ignition description
- Type
- distributor / specification
Sources: Autolite-Ford High Performance Parts: Venom Under the Hood - 428 C.J.
1970 Mustang 428 Cobra Jet 4V non-Ram-Air engine code
- Value
- Q
- Application
- 1970 Mustang 428 Cobra Jet 4V without Ram Air
- Type
- engine assembly / assembly code
Sources: 1970 Ford Lincoln Mercury Vehicle Identification (U.S. and Canada), from 1970 Car Shop Manual Form 7098-70-1 , 1970 Mustang VIN Decoder
1970 Mustang 428 Cobra Jet 4V Ram Air engine code
- Value
- R
- Application
- 1970 Mustang 428 Cobra Jet 4V Ram Air
- Type
- engine assembly / assembly code
Sources: 1970 Ford Lincoln Mercury Vehicle Identification (U.S. and Canada), from 1970 Car Shop Manual Form 7098-70-1 , 1970 Mustang VIN Decoder
Advertised gross horsepower
- Value
- 335 hp at 5200 rpm
- Application
- 1969 Fairlane/Torino/Cobra 428-4V and 428 Ram Air 4V power teams
- Type
- engine assembly / specification
Sources: 1969 Fairlane/Torino/Cobra AMA Specifications
Advertised gross horsepower
- Value
- 335 hp @ 5,200 rpm
- Application
- 1970 Mustang Q/R-code 428 CID 4-barrel Cobra Jet
- Type
- engine assembly / specification
Sources: 1970 Ford Lincoln Mercury Vehicle Identification (U.S. and Canada), from 1970 Car Shop Manual Form 7098-70-1
Advertised gross torque
- Value
- 440 lb-ft at 3400 rpm
- Application
- 1969 Fairlane/Torino/Cobra 428-4V and 428 Ram Air 4V power teams
- Type
- engine assembly / specification
Sources: 1969 Fairlane/Torino/Cobra AMA Specifications
Advertised gross torque
- Value
- 440 lb-ft @ 3,400 rpm
- Application
- 1970 Mustang Q/R-code 428 CID 4-barrel Cobra Jet
- Type
- engine assembly / specification
Sources: 1970 Ford Lincoln Mercury Vehicle Identification (U.S. and Canada), from 1970 Car Shop Manual Form 7098-70-1
Advertised horsepower
- Value
- 335 hp at 5,200 rpm
- Application
- 1968 Mustang 428 Cobra Jet
- Type
- engine assembly / specification
Sources: 1968 Ford Mustang Vehicle Valuation Report , Ford’s 1968 1/2 428 Cobra Jet Mustang: The Jet Set
Advertised torque
- Value
- 445 lb-ft at 3,400 rpm
- Application
- 1968 Mustang 428 Cobra Jet
- Type
- engine assembly / specification
Sources: 1968 Ford Mustang Vehicle Valuation Report , Ford’s 1968 1/2 428 Cobra Jet Mustang: The Jet Set
Bore
- Value
- 4.13 inches
- Application
- production 428-4V Cobra Jet
- Type
- engine assembly / specification
Sources: Autolite-Ford High Performance Parts: Venom Under the Hood - 428 C.J.
Bore
- Value
- 4.13 in
- Application
- Regular-production Ford 428 Cobra Jet V8 specification
- Type
- engine assembly / specification
Sources: 1968 Ford Hi-Performance Parts Catalog, 428 Cobra Jet section
Compression ratio
- Value
- 10.6:1
- Application
- 1969 Fairlane/Torino/Cobra 428-4V and 428 Ram Air 4V power teams
- Type
- engine assembly / specification
Sources: 1969 Fairlane/Torino/Cobra AMA Specifications
Compression ratio
- Value
- 10.6:1
- Application
- 1970 Cougar Eliminator 428 Cobra Jet
- Type
- engine assembly / specification
Sources: Mercury Cougar Eliminator Specifications & Data
Compression ratio
- Value
- 10.6:1
- Application
- 1970 Mustang Q/R-code 428 CID 4-barrel Cobra Jet
- Type
- engine assembly / specification
Sources: 1970 Ford Lincoln Mercury Vehicle Identification (U.S. and Canada), from 1970 Car Shop Manual Form 7098-70-1
Compression ratio
- Value
- 11.0:1
- Application
- Regular-production Ford 428 Cobra Jet V8 specification
- Type
- engine assembly / specification
Sources: 1968 Ford Hi-Performance Parts Catalog, 428 Cobra Jet section
Engine assembly date format
- Value
- Year-month-day plus assembler initial
- Application
- 428 Cobra Jet engine assembly date-correctness check
- Type
- engine assembly / date code
- Location
- One of the four flat spots near the cylinders, commonly above the oil filter adapter
Sources: Hard Core Resto Tech: Detailing a 428 Cobra Jet Engine, Version 1.3
Engine assembly date stamp format and common location
- Value
- Year, month, day, assembler last-name initial
- Application
- 428 Cobra Jet engine assembly date verification
- Type
- engine assembly / date code
- Location
- One of four flat spots near the cylinders, most commonly above the oil filter adapter
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
Engine assembly date stamp location
- Value
- Stamped on flat pad above oil-filter adapter
- Application
- 428 Cobra Jet engine dating check in cited detailing reference
- Type
- engine assembly / date code
- Location
- Flat pad above oil-filter adapter
Source states the assembly date should fall after the block casting date.
Sources: Hard Core Resto Tech: Detailing a 428 Cobra Jet Engine Part 1
Engine configuration
- Value
- 90-degree V8, overhead valves
- Application
- 1969 Fairlane/Torino/Cobra 428-4V engine family
- Type
- engine assembly / specification
Sources: 1969 Fairlane/Torino/Cobra AMA Specifications
Engine VIN derivative stamp location
- Value
- Partial VIN or VIN derivative consistent with vehicle VIN when present
- Application
- 1969-1970 Cougar 428 Cobra Jet engine authenticity check
- Type
- engine assembly / stamp
- Location
- Typically on the rear of the engine block or rear of the cylinder head
Sources: Hard Core Resto Tech: Detailing a 428 Cobra Jet Engine, Version 1.3
Gross horsepower rating
- Value
- 335 hp @ 5200 rpm
- Application
- 1970 Cougar Eliminator 428 Cobra Jet
- Type
- engine assembly / specification
Sources: Mercury Cougar Eliminator Specifications & Data
Gross torque rating
- Value
- 440 lb-ft @ 3400 rpm
- Application
- 1970 Cougar Eliminator 428 Cobra Jet
- Type
- engine assembly / specification
Sources: Mercury Cougar Eliminator Specifications & Data
Maximum compression ratio
- Value
- 11.0:1
- Application
- production 428-4V Cobra Jet specification chart
- Type
- engine assembly / specification
Sources: Autolite-Ford High Performance Parts: Venom Under the Hood - 428 C.J.
Piston displacement
- Value
- 428 cubic inches
- Application
- 1969 Fairlane/Torino/Cobra 428-4V engine family
- Type
- engine assembly / specification
Sources: 1969 Fairlane/Torino/Cobra AMA Specifications
Rated horsepower
- Value
- 335 hp at 5,200 rpm
- Application
- Regular-production Ford 428 Cobra Jet V8 specification
- Type
- engine assembly / specification
Sources: 1968 Ford Hi-Performance Parts Catalog, 428 Cobra Jet section
Rated torque
- Value
- 440 lb-ft at 3,400 rpm
- Application
- Regular-production Ford 428 Cobra Jet V8 specification
- Type
- engine assembly / specification
Sources: 1968 Ford Hi-Performance Parts Catalog, 428 Cobra Jet section
Stroke
- Value
- 3.98 inches
- Application
- production 428-4V Cobra Jet
- Type
- engine assembly / specification
Sources: Autolite-Ford High Performance Parts: Venom Under the Hood - 428 C.J.
Stroke
- Value
- 3.98 in
- Application
- Regular-production Ford 428 Cobra Jet V8 specification
- Type
- engine assembly / specification
Sources: 1968 Ford Hi-Performance Parts Catalog, 428 Cobra Jet section
428 Cobra Jet passenger-side exhaust manifold early reinforced version
- Value
- C8OZ-9430-C
- Application
- Early 1969 model year through December 1969 Cobra Jet passenger-side exhaust manifold reference
- Type
- exhaust manifold / part number
- Location
- Passenger-side exhaust manifold
Date-window applicability remains vehicle-build-date specific.
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
428 Cobra Jet passenger-side exhaust manifold later version
- Value
- C9OZ-9430-C
- Application
- December 1969-and-later Cobra Jet passenger-side exhaust manifold reference
- Type
- exhaust manifold / part number
- Location
- Passenger-side exhaust manifold
Reference associates this version with elimination of the exhaust spacer; date-window applicability remains vehicle-build-date specific.
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
Firing order
- Value
- 1-5-4-2-6-3-7-8
- Application
- Regular-production Ford 428 Cobra Jet V8 specification
- Type
- ignition / specification
Sources: 1968 Ford Hi-Performance Parts Catalog, 428 Cobra Jet section
Spark plug
- Value
- Autolite BF-32
- Application
- production 428-4V Cobra Jet specification chart
- Type
- ignition / part number
Sources: Autolite-Ford High Performance Parts: Venom Under the Hood - 428 C.J.
Spark plug
- Value
- BF-32
- Application
- Regular-production Ford 428 Cobra Jet V8 specification
- Type
- ignition / specification
Sources: 1968 Ford Hi-Performance Parts Catalog, 428 Cobra Jet section
428 Cobra Jet cast-iron intake manifold engineering number
- Value
- C8OE-9425-C
- Application
- 428 Cobra Jet intake manifold reference
- Type
- intake manifold / engineering number
- Location
- Behind the carburetor mounting area
Rear intake date code should precede the documented vehicle build date.
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
428 Cobra Jet intake manifold date-code location
- Value
- Year-Month-Day date code at rear of intake manifold
- Application
- 428 Cobra Jet intake manifold date validation
- Type
- intake manifold / date code
- Location
- Rear of intake manifold
Date-code correctness remains vehicle-specific and must be reconciled to the car's build date.
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
Common Cobra Jet cast-iron intake engineering number
- Value
- C8OE-9425-C
- Application
- 428 Cobra Jet cast-iron intake in cited detailing reference
- Type
- intake manifold / engineering number
- Location
- Behind carburetor mounting area
Sources: Hard Core Resto Tech: Detailing a 428 Cobra Jet Engine Part 1
Common Cobra Jet intake manifold engineering number
- Value
- C8OE-9425-C
- Application
- 428 Cobra Jet cast-iron intake manifold
- Type
- intake manifold / engineering number
- Location
- Cast behind the carburetor mounting area
Source also locates the intake date code at the rear of the intake and states it should precede the car build date.
Sources: How To: 428 Cobra Jet Engine Detailing, Version 1.3
Intake manifold date-code location
- Value
- Rear date code
- Application
- 428 Cobra Jet cast-iron intake in cited detailing reference
- Type
- intake manifold / date code
- Location
- Rear of intake manifold
Source states the intake date code should precede the vehicle build date.
Sources: Hard Core Resto Tech: Detailing a 428 Cobra Jet Engine Part 1
1968 long Thermactor hose engineering number
- Value
- C8OE-9B466-F
- Application
- 1968 Cobra Jet Thermactor hose in cited detailing reference
- Type
- other / engineering number
- Location
- Thermactor/smog hose marking
Sources: How to Detail a 428 Cobra Jet Engine Part 2
1968 short Thermactor hose engineering number
- Value
- C8OE-9B466-C
- Application
- 1968 Cobra Jet Thermactor hose in cited detailing reference
- Type
- other / engineering number
- Location
- Thermactor/smog hose marking
Sources: How to Detail a 428 Cobra Jet Engine Part 2
1968 Thermactor S-hose engineering number
- Value
- C8AE-9F287-A
- Application
- 1968 Cobra Jet Thermactor S hose in cited detailing reference
- Type
- other / engineering number
- Location
- Thermactor/smog hose marking
Sources: How to Detail a 428 Cobra Jet Engine Part 2
Production piston
- Value
- cast aluminum dished-with-eyebrows piston with full-floating pin and two retainers
- Application
- production 428 Cobra Jet piston description
- Type
- piston / specification
Sources: Autolite-Ford High Performance Parts: Venom Under the Hood - 428 C.J.
Exhaust valve diameter
- Value
- 1.65 in
- Application
- Regular-production Ford 428 Cobra Jet V8 specification
- Type
- valve train / specification
Sources: 1968 Ford Hi-Performance Parts Catalog, 428 Cobra Jet section
Exhaust valve head diameter
- Value
- 1.660 inches
- Application
- production 428-4V Cobra Jet specification chart
- Type
- valve train / specification
Sources: Autolite-Ford High Performance Parts: Venom Under the Hood - 428 C.J.
Intake valve diameter
- Value
- 2.08 in
- Application
- Regular-production Ford 428 Cobra Jet V8 specification
- Type
- valve train / specification
Sources: 1968 Ford Hi-Performance Parts Catalog, 428 Cobra Jet section
Intake valve head diameter
- Value
- 2.097 inches
- Application
- production 428-4V Cobra Jet specification chart
- Type
- valve train / specification
Sources: Autolite-Ford High Performance Parts: Venom Under the Hood - 428 C.J.
