Please call or Email for N73 performance heads
VAC's Stage 3 Performance Cylinder Heads: Unmatched Performance
| |
Stage 1 |
Stage 2 |
Stage 3 |
| CNC 5-Axis Porting |
NO |
NO |
YES |
| Performance Valves |
NO |
NO |
YES |
| Performance Springs |
NO |
YES |
YES |
| Performance Retainers |
NO |
YES |
YES |
| Valve Guides |
YES |
YES |
YES |
| Valve Seals |
YES |
YES |
YES |
| Multi Angel Valve Job |
YES |
YES |
YES |
| Resurfaced Mating Surface |
YES |
YES |
YES |
| Complete Assembly |
YES |
YES |
YES |
VAC's Stage 3 Performance Cylinder Heads are the ULTIMATE in cylinder head technology and performance, crafted with more than 50+ years experience in the racing field.
Many of our cylinder heads are capable of 120-155 HP per liter N/A, and of course drastically more when used with forced induction. We have spent many, many years on the dyno, the flow bench, and even more years though world-wide racing experience to achieve such excellent results while being reliable enough to compete in professional motorsports. Our Stage 3 heads are intended to produce maximum peak horsepower while still maintaining excellent powerband, the crucial secret of the fastest race engines in the world!
Even though they are an extreme departure from stock, we have stage 3 heads for use on the ultimate street performance vehicle as well.
Our Stage 3 Cylinder Heads feature the following:
*Core cylinder head is required for this job. We prefer to work with the customers core cylinder head, but one can be supplied on request by clicking above.*
VAC Tech Tip:
A high performance engine works most efficiently with the broadest powerband when everything is designed to work together.
Stage 3 heads are VAC's pinnacle of R&D and this philosophy.