Cadillac 425 Engine Specs
The Cadillac 425 engine is a powerful and reliable V8 engine that was produced by Cadillac from 1967 to 1969. It was part of the Cadillac’s big-block engine family and was known for its impressive performance and smooth operation. Let’s take a closer look at the specifications of this legendary engine.
Engine Configuration
The Cadillac 425 engine featured a displacement of 7.0 liters or 425 cubic inches, hence its name. It had a bore of 4.082 inches and a stroke of 4.060 inches. The engine was designed with a cast-iron block and cylinder heads, providing durability and strength. It had a compression ratio of 10.5:1, allowing for efficient combustion and power delivery.
This V8 engine utilized a single overhead camshaft (SOHC) configuration, which was quite advanced for its time. The camshaft was driven by a timing chain and operated the engine’s valves. The 425 engine had two valves per cylinder, a total of 16 valves, which were actuated by hydraulic lifters. This design contributed to the engine’s smooth performance and reduced maintenance requirements.
Engine Oil Specs & Service Intervals
Proper engine oil is crucial for maintaining the performance and longevity of any engine, including the Cadillac 425. Here are the recommended engine oil specifications for this engine:
| Specification | Value |
|---|---|
| Oil Type | SAE 10W-30 or SAE 10W-40 |
| Oil Capacity (with filter) | 5 quarts |
| Oil Capacity (without filter) | 4.5 quarts |
It is recommended to change the engine oil and oil filter every 3,000 miles or every three months, whichever comes first. Regular oil changes help maintain proper lubrication, prevent engine wear, and ensure optimal performance.
In addition to regular oil changes, it is important to check the engine oil level regularly and top it up if necessary. It is also advisable to inspect the oil filter during each oil change and replace it if it shows signs of excessive dirt or damage.
Following the recommended service intervals and using the correct engine oil will help keep your Cadillac 425 engine running smoothly and efficiently for years to come.
Detailed Engine Specifications
| Specification | Value |
|---|---|
| Engine Type | V8 |
| Displacement | 7.0 liters (425 cubic inches) |
| Bore | 4.082 inches |
| Stroke | 4.060 inches |
| Compression Ratio | 10.5:1 |
| Valve Configuration | SOHC (Single Overhead Camshaft) |
| Valves per Cylinder | 2 |
| Total Valves | 16 |
The Cadillac 425 engine is a remarkable piece of engineering, offering impressive power and reliability. Whether you own a classic Cadillac equipped with this engine or simply appreciate its legacy, understanding its specifications and following proper maintenance practices will ensure its continued performance for years to come.
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