1968 Pontiac 400 Engine Specs
Engine Configuration
The 1968 Pontiac 400 engine was a powerful V8 engine that offered impressive performance and reliability. Let’s take a closer look at its specifications and features.
Engine Specifications
To understand the capabilities of the 1968 Pontiac 400 engine, let’s examine its detailed specifications:
| Specification | Details |
|---|---|
| Engine Type | V8 |
| Displacement | 400 cubic inches (6.6 liters) |
| Bore and Stroke | 4.12 inches x 3.75 inches |
| Compression Ratio | 10.25:1 |
| Power Output | 330 horsepower |
| Torque | 430 lb-ft |
| Valvetrain | Overhead Valve (OHV) |
| Fuel System | Quadrajet 4-barrel carburetor |
| Ignition System | Points and coil |
| Transmission | 3-speed manual or 3-speed automatic |
Engine Oil Specs & Service Intervals
Proper engine oil specifications and regular maintenance are crucial for the longevity and optimal performance of any engine, including the 1968 Pontiac 400. Here are the recommended engine oil specs and service intervals:
Engine Oil Specifications
When selecting engine oil for your 1968 Pontiac 400, it is important to choose the right type and viscosity to ensure proper lubrication and protection. The recommended engine oil specifications are as follows:
– Oil Type: High-quality mineral or synthetic engine oil
– Viscosity: 10W-30 or 10W-40 (depending on climate and driving conditions)
– API Service Rating: SF or SG
Service Intervals
Regular maintenance is essential to keep your engine running smoothly. Here are the recommended service intervals for the 1968 Pontiac 400 engine:
– Oil Change: Every 3,000 miles or every 3 months (whichever comes first)
– Oil Filter Replacement: With every oil change
– Spark Plug Replacement: Every 10,000 miles or every 12 months (whichever comes first)
– Ignition Points and Condenser Replacement: Every 12,000 miles or every 12 months (whichever comes first)
– Timing and Carburetor Adjustment: Every 12,000 miles or every 12 months (whichever comes first)
– Cooling System Flush and Refill: Every 24,000 miles or every 24 months (whichever comes first)
Following these service intervals will help ensure the longevity and optimal performance of your 1968 Pontiac 400 engine.
In conclusion, the 1968 Pontiac 400 engine was a powerful V8 engine with impressive specifications. Its reliability and performance made it a popular choice among car enthusiasts. By adhering to the recommended engine oil specifications and service intervals, you can keep your engine running smoothly for years to come.
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