351W 4V
1969High-performance passenger-car trim
Early performance version.
Ford 351 Windsor enginePhoto: Stephen Foskett · CC BY-SA 3.0 / GFDL
Ford · Windsor Small-Block
Ford 351 Windsor
The tall-deck Windsor that added torque and strength while retaining classic small-block Ford DNA.
351
Cubic inches
The 351W is one of Ford's most versatile pushrod V8s: compact enough for swaps, strong enough for trucks, and supported by one of the deepest aftermarket ecosystems in American performance.
Key variants
All variants351W 4V5.8L EFICobra R 351W
Displacement
351 ci
Bore
4"
Stroke
3.5"
Years
1969–1998
Key Takeaway
The 351W keeps 4.38-in bore spacing and a 4.00-in bore but uses a taller deck and 3.00-in main journals, making it distinct from the 289/302 despite family resemblance.
Technical Specifications
- Compression
- Varied by application; representative 1969 Mustang: about 9.5–9.6:1 H-code 2V and 10.7:1 M-code 4V
- Horsepower
- Varied widely by year; early 4V versions reached about 290 hp gross
- Torque
- Strong street and truck torque; ratings varied by application
- Architecture
- 90° OHV pushrod V8 · tall-deck Windsor small-block
- Block
- Cast iron
- Cylinder heads
- Cast iron production heads
- Valvetrain
- OHV · 2 valves per cylinder
- Aspiration
- Naturally aspirated
- Fuel delivery
- Carbureted early; EFI in later truck/performance applications
- Firing order
- 1-3-7-2-6-5-4-8
- Main bearings
- 5 main bearings
The 351W keeps 4.38-in bore spacing and a 4.00-in bore but uses a taller deck and 3.00-in main journals, making it distinct from the 289/302 despite family resemblance.
Internal Specifications
Variant-specific values are labeled. Engine families that span multiple years or RPOs can have different heads, cams, induction and rotating parts, so the exact code/year always takes priority.
Identification & Output
- Engine codes / RPO
- H (representative 1969 Mustang 351W 2V), M (representative 1969 Mustang 351W 4V)
- Casting numbers
- D1AE-DA (1971–1984 351W block-family reference), D2AE-B4A / D2AE-BA / D2AE-BA1 (1970s 351W references), D9AE-EB / D9AE-EC / D9AE-ED (1979–1982 351W references), F4TE-AA (1994–1996 351W truck block reference)
- Power rating
- SAE gross on early engines; SAE net on later production
- Horsepower RPM
- Representative 1969 Mustang: 250 hp @ 4600 rpm 2V; 290 hp @ 4800 rpm 4V (SAE gross)
- Torque RPM
- Representative 1969 Mustang: 355 lb-ft @ 2600 rpm 2V; 385 lb-ft @ 3200 rpm 4V (SAE gross)
Rotating Assembly
- Rod length
- 5.956 in
- Balance
- Production balance details vary by year; match rotating assembly components
- Rear main seal
- Production seal style varies across the long run
- Deck height
- 9.480 in (1969–70) · 9.503 in (1971–96 Ford Performance dimension reference)
- Main journal
- 3.000 in
- Rod journal
- 2.311 in
Operating Specs
- Production notes
- Introduced for 1969 as the taller-deck member of Ford's Windsor small-block family. Early Mustang applications were offered in two- and four-barrel form; later 351W specifications changed substantially by vehicle, emissions package and model year.
Compatibility Notes
- 351W uses Windsor-style water routing through the intake-manifold face of the cylinder heads.
- Do not confuse 351W with 351C: same displacement, different block/head/cooling architecture.
Notable Applications
Ford MustangFord TorinoFord F-SeriesFord Bronco1993–1995 F-150 Lightning family1995 Mustang Cobra R
Strengths
- Strong aftermarket support
- Excellent street torque
- Compact relative to FE and 385-series engines
Weaknesses / Watch-outs
- Taller deck means 289/302 intake manifolds do not fit
- Production block strength varies by year and power level
Common Upgrades
- Aluminum heads
- Hydraulic roller cam
- Stroker kits
- EFI conversion
- Headers
Racing History & Legacy
The 351W became a common road-race, drag, marine and street-performance foundation, and remained relevant well into the EFI era.
Ford's durable tall-deck Windsor and a favorite swap/build platform.
References & Image Credit
Engine image: Stephen Foskett · CC BY-SA 3.0 / GFDL · source
Ford Performance — Basic Engine Dimensions
manufacturer specification
Ford Performance — Engine History
manufacturer history
Wikimedia Commons — 1969 Mustang 351 Windsor engine
licensed media
MustangSpecs — 1969 Mustang engine specifications
historical specification
EngineLabs — Ford V8 block casting-number guide
technical reference
Key Factory / Build Variants
5.8L EFI
1980s–1990sSAE net ratings varied
Truck and performance-era evolution.
Cobra R 351W
1995Special performance calibration
Final major Mustang use of the classic Windsor 351 architecture.
Engineering Notes Worth Knowing
01
Ford Performance lists 1969–70 deck height at 9.480 in and later production at 9.503 in.
02
Main journals are 3.000 in, larger than the 289/302's 2.249-in mains.
03
Camshaft architecture is related to 289/302, but intake manifold and many bottom-end parts are unique because of the taller deck and larger mains.
History · context · related reading
The Story Behind Ford 351 Windsor
The Windsor family grew up when Ford stretched the deck and stroke to 351 cubic inches.
Family comparison
01351 Windsor vs 351 Cleveland
They share displacement and bore spacing, but their blocks, heads, cooling paths and intended personalities are fundamentally different.
TorqueList Garage Reference Series
See this engine inside the full Ford reference catalog.
The same Engine Library data now powers a more detailed mobile-friendly catalog with technical specs, variants, engineering notes, history and related stories.