The Cadillac 429 is a 429 cubic inch OHV V8 produced by Cadillac from 1964 through 1967- four model years only. It was the natural evolution of the Cadillac 390, enlarged by increasing the bore to 4.125 inches while retaining a 4.000 inch stroke to achieve the larger displacement. At 340 hp and 480 lb-ft of torque, it was one of the most torque-rich American V8 engines of its era- designed not for high-RPM power but for smooth, effortless authority suited to Cadillac's full-size luxury vehicles.
The 429 powered every Cadillac model from 1964 through 1967: the DeVille, Calais, Eldorado, Fleetwood, Sixty Special, and all commercial chassis applications. By 1967 it had reached the limits of the original 390-series architecture, and Cadillac introduced an entirely new and larger 472 cubic inch engine for 1968- one of the largest passenger car V8 engines ever produced.
Today the Cadillac 429 is a low-volume specialty engine with a small but dedicated restoration community. Clean cores are genuinely scarce- far rarer than the Ford 429 or GM 454. A compression-tested unit with documented casting numbers is a significant find for any classic Cadillac restoration project.
The 429 was produced in four model years with minor evolutionary changes:
| Year | HP | Torque | Notes |
|---|---|---|---|
| 1964 | 340 hp | 480 lb-ft | First year 429. 10.5:1 compression. Two crankshaft variants depending on transmission (HydraMatic vs Turbo HydraMatic). Positive crankcase ventilation introduced. |
| 1965 | 340 hp | 480 lb-ft | Minimal changes from 1964. Same specs throughout. |
| 1966 | 340 hp | 480 lb-ft | Minor tuning refinements. Same overall output. |
| 1967 | 340 hp | 480 lb-ft | Final year of the 429. Replaced by the all-new 472 cu in V8 for 1968. |
| INCLUDED- Long Block | Block, crankshaft, pistons, connecting rods, camshaft, cylinder heads, valve train, oil pan, timing cover, and water pump where present. |
|---|---|
| NOT INCLUDED | Intake manifold, carburetor, exhaust manifolds, distributor, ignition system, alternator, power steering pump, starter, flexplate or flywheel, accessory brackets. |
| Core Note | No core charge. You are not required to return your old engine. |
The Cadillac 429 was factory installed in all Cadillac models from 1964 to 1967:
| Cadillac DeVille (all body styles) | 1964 to 1967 |
|---|---|
| Cadillac Calais | 1965 to 1967 |
| Cadillac Eldorado | 1967 (first-year Eldorado FWD) |
| Cadillac Fleetwood (all variants) | 1964 to 1967 |
| Cadillac Sixty Special | 1964 to 1967 |
| Cadillac Commercial Chassis | 1964 to 1967 (ambulance and hearse applications) |
The Cadillac 429 uses a Cadillac-specific bellhousing bolt pattern and motor mount configuration. It is not directly compatible with GM small-block or big-block swap components. For a correct restoration, it should be matched to original Cadillac motor mounts and the original Turbo HydraMatic or HydraMatic transmission. Call (240) 301-0095 with your specific year and model.
Transmission compatibility: Turbo HydraMatic 400 (TH400)- standard pairing from 1965 onward | HydraMatic (dual-coupling)- some 1964 applications. The 1964 Cadillac used two different crankshaft rear configurations depending on which transmission was installed.
Not sure if this fits? Call (240) 301-0095. We verify fitment before every order ships.
| Cadillac 429 | Most common buyer search |
|---|---|
| Cadillac 429 V8 | Configuration search |
| Cadillac 7.0L engine | Displacement-format search |
| 1964 Cadillac engine | Year-specific buyer |
| 1967 Cadillac engine | Final year buyer |
| Cadillac DeVille engine | Application-specific buyer |
| Cadillac Eldorado engine | Eldorado restoration buyer |
| Cadillac big block | Big block designation |
| vintage Cadillac engine | Broad classic buyer |
| Cadillac 390 429 engine | Series history context |
Used OEM vs Rebuilt- Which Is Right for You?
Used OEM is the right choice for a DeVille, Fleetwood, or Eldorado restoration- particularly where a compression-tested unit with casting documentation is the foundation. Cadillac 429 cores are genuinely scarce. A tested unit is a meaningful find.
A specialist rebuild makes sense for a show car requiring correct specifications and fresh tolerances. Cadillac 429 rebuild specialists are few but the community is dedicated. Call us to discuss current inventory condition and whether a rebuild is warranted.
Mileage varies by unit. Where available we provide it. Where it cannot be confirmed, we disclose this before your order is placed.
| Displacement | 429 cu in (7.0L) |
|---|---|
| Configuration | V8 | OHV | 16 valves |
| Bore X Stroke | 4.125 in x 4.000 in |
| Firing Order | 1-8-4-3-6-5-7-2 |
| Aspiration | Naturally Aspirated |
| Fuel System | Rochester 4-barrel carburetor |
| Block Material | Cast Iron |
| Head Material | Cast iron |
| Compression Ratio | 10.5:1 |
| Horsepower | 340 hp |
| Torque | 480 lb-ft |
| Production Years | 1964 to 1967 |
| Manufacturer | Cadillac (General Motors) |
| Important Note | Cadillac 429- NOT the Ford 429. Completely different engine. |
| Compatible Transmissions | Turbo HydraMatic 400 (TH400) | HydraMatic (1964 some applications) |
| Condition | Used OEM | compression tested and inspected |
Bought a 1967 Cadillac 429 for my Fleetwood. Vaz confirmed the correct year casting and provided compression results before shipping. One valve cover gasket was seeping — disclosed before purchase and replaced at installation for under $20. Engine runs strong and smooth. Good honest transaction.
Needed a 429 for my DeVille restoration. Vaz documented the casting number and confirmed this was a genuine Cadillac 429 — not the Ford version which a lot of sellers confuse. Compression came back 152 to 160 across all 8. Engine is installed and the DeVille drives exactly as it should. Outstanding sourcing for a rare engine.
Every used Cadillac 429 Engine For Sale sold by Vaz Auto Solutions is covered by a 15 day replacement warranty from the date of delivery.
To make a claim, contact us within 15 days of delivery at (240) 301-0095 or info@vazautosolutions.com.
