MERCURY RACING 700 SCI STAGE 3 TO 4 UPGRADE

The Whipple Stage 4 system boasts even more power than stage 3 by coupling a Stage 4 performance calibration with a Whipple stage 4  camshaft. The Whipple camshaft works well with all stock valve train for a very simple swap. This system helps boost the engines output by more than 210HP* and 170 pounds of torque* (over stock) or 45HP and 35 pounds of torque (over Stage 3). Whipple also increases the low rpm power range for significant decrease in plane time and a stunning gain in acceleration. The factory rpm limiter is also increased, giving customers the ability to greatly increase top speed MPH while running original props. The stock RPM limit of 5400 is modified to 6200rpm where peak power ends. 

Key features:

• Hi-performance PCM calibration with MPH gains of 1-5mph (over stage 3)**
• High-flow 120deg thermostat
• Increased horsepower for increased top speed MPH
• Increased low-speed torque for decreased plane time
• Increased low, mid and high speed torque for better acceleration and throttle response
• Increased spark at low and mid speeds for increased engine efficiency
• Stage 4 camshaft to produce more power throughout the rpm range
• 6200 RPM limit vs. stock 5400 RPM limit giving increased propping range and increased horsepower
• 91 octane safe (RON+MON)/2
• Stock idle, starting and drive-ability is maintained

*NOTE: PCM'S MUST BE SENT TO WHIPPLE SUPERCHARGERS FOR CALIBRATION SERVICE ALONG WITH RECEIPT, NEW PCM'S ARE AVAILABLE UPON REQUEST. TURN AROUND IS NORMALLY 7-10 DAYS.

**Power levels can vary from engine to engine. Whipple’s performance results were under controlled conditions. All applications can vary.