Engine Summary
- Manufacturer
- Ford
- Family
- Ford FE-series big-block
- Displacement
- 427 cubic inches
Also Known As
427 FE V8427 Ford FE427 Side Oiler427 medium-riser V8427 R-code V8R-code 427427 High Performance427 dual-quad427 8V HP
Engine profile
Ford 427 FE V8
Ford FE-series big-block · 427 cubic inches · Ford
Identification reference
Engine Details
Source-backed component numbers, codes, stampings, and application notes.
Block construction
- Value
- Cast-iron block with thick deck and cross-bolted crankshaft retention
- Application
- Ford/Mercury 427 FE V8 family
- Type
- block / specification
- Car pages
- 1967 Mercury Comet 427 R-Code
Sources: Ford and Mercury 427 CID V8: 1963-68
Bore
- Value
- 4.23 in
- Application
- Ford/Mercury 427 FE V8 family
- Type
- block / specification
- Car pages
- 1967 Mercury Comet 427 R-Code
Sources: Ford and Mercury 427 CID V8: 1963-68
Side-oiler lubrication path
- Value
- Side-oiler block introduced in 1965; oil routed to crankshaft before camshaft and valvetrain
- Application
- 1965-up Ford/Mercury 427 FE side-oiler family; supports 1967 R-code context but does not verify an individual car
- Type
- block / specification
- Car pages
- 1967 Mercury Comet 427 R-Code
Sources: Ford and Mercury 427 CID V8: 1963-68
R-code carburetion format
- Value
- Two four-barrel carburetors
- Application
- 1967 Mercury Comet R-code 427 dual-four-barrel engine path
- Type
- carburetor / specification
- Car pages
- 1967 Mercury Comet 427 R-Code
Sources: 1967 Mercury Comet library page , Ford and Mercury 427 CID V8: 1963-68
Crankshaft material change
- Value
- Forged-steel crankshaft from 1965; internally balanced
- Application
- 1965-up Ford/Mercury 427 FE family; supports 1967 R-code context but does not verify an individual car
- Type
- crankshaft / specification
- Car pages
- 1967 Mercury Comet 427 R-Code
Sources: Ford and Mercury 427 CID V8: 1963-68
Stroke
- Value
- 3.78 in
- Application
- Ford/Mercury 427 FE V8 family
- Type
- crankshaft / specification
- Car pages
- 1967 Mercury Comet 427 R-Code
Sources: Ford and Mercury 427 CID V8: 1963-68
Compression ratio
- Value
- 11.1:1
- Application
- OldRide 1967 Comet 202 R-code summary attributed to the 427 Registry
- Type
- engine assembly / specification
- Car pages
- 1967 Mercury Comet 427 R-Code
Sources: 1967 Mercury Comet library page
Marketed displacement versus true displacement
- Value
- 427 cu in marketed displacement; AHPS reports true displacement as 425 cu in
- Application
- Ford/Mercury 427 FE V8 family
- Type
- engine assembly / specification
- Car pages
- 1967 Mercury Comet 427 R-Code
Sources: Ford and Mercury 427 CID V8: 1963-68
Street dual-four horsepower rating
- Value
- 425 hp @ 6000 rpm
- Application
- Ford/Mercury 427 FE street two-four-barrel version; OldRide applies this rating to the 1967 Comet R-code summary
- Type
- engine assembly / specification
- Car pages
- 1967 Mercury Comet 427 R-Code
Sources: 1967 Mercury Comet library page , Ford and Mercury 427 CID V8: 1963-68
Street dual-four torque rating
- Value
- 476 lb-ft @ 3400 rpm in AHPS technical reference; OldRide reports 480 lb-ft @ 3700 rpm in its 1967 Comet 202 R-code summary
- Application
- Ford/Mercury 427 FE street two-four-barrel version and 1967 Comet 202 R-code summary
- Type
- engine assembly / specification
- Car pages
- 1967 Mercury Comet 427 R-Code
Different reviewed references report different torque/rpm values; retained as a reported-source discrepancy rather than forcing one universal value.
Sources: 1967 Mercury Comet library page , Ford and Mercury 427 CID V8: 1963-68
Street dual-four intake material
- Value
- Aluminum manifold for two four-barrel carburetion
- Application
- Ford/Mercury 427 FE street two-four-barrel version
- Type
- intake manifold / specification
- Car pages
- 1967 Mercury Comet 427 R-Code
Sources: Ford and Mercury 427 CID V8: 1963-68
Valve lifters
- Value
- Solid valve lifters
- Application
- 1963-1965 427 FE per AHPS; retained here only as family context, not a complete 1967 R-code valvetrain matrix
- Type
- valve train / specification
- Car pages
- 1967 Mercury Comet 427 R-Code
Sources: Ford and Mercury 427 CID V8: 1963-68
Cars Using This Engine
3 linked car pages.
Fairlane 500 two-door hardtop
1966 Ford Fairlane 427 R-Code
Factory special-order Ford Fairlane 500 two-door hardtop built for Super Stock eligibility
Fairlane 500 / 500XL two-door hardtop or club coupe, verified per car
1967 Ford Fairlane 427 R-Code
Factory 427 Fairlane package requiring VIN and paperwork proof, not a dealer-swapped 427 claim
Comet 202 sedan; Capri, Caliente, or Cyclone hardtop according to reported records
1967 Mercury Comet 427 R-Code
R in the fifth VIN position; body series varies