How to Identify GT40 Heads
Identifying GT40 engine heads requires examining specific markings, design features, and casting numbers. These heads are distinctive components from the legendary Ford GT40 racing cars.
Key Identification Markings
- Look for Ford GT40 casting numbers on the head surface
- Check for "GT40" or "Ford" logos on the cylinder head
- Examine the valve configuration and port design
- Verify the head bolt pattern matches GT40 specifications
Visual Characteristics
- Intake Port Design: Unique shape with specific runner angles
- Valve Placement: Correct valve spacing and configuration
- Casting Details: Distinctive casting marks and surface finish
- Head Dimensions: Specific measurements compared to standard heads
Comparison of Identification Methods
| Identification Method | Cost | Time Required | Accuracy Level |
|---|---|---|---|
| Marking Inspection | Free | 5-10 minutes | High |
| Professional Inspection | $100-$200 | 30-60 minutes | Very High |
| Database Research | Free to $50 | 1-2 hours | Medium-High |
Additional Verification Steps
- Confirm correct valve stem diameter
- Check combustion chamber shape and volume
- Verify head gasket surface specifications
- Examine cooling channel configuration