- Internal Step-Up Ratio: 3.61:1
- Max Speed: 52,000 RPM
- Max Boost: 22 PSI
- Max Flow: 1,250 CFM
- Max Power: 900
- HP Peak Efficiency: 78%
- Polished Finish
- V2 - Pressure Lubed From The Engines Oil System - Helical Gears
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Performance Specs -
While this is our entry level head unit, it is also the most efficient head unit for stock engines in the 500 – 600 RWHP range. The Si is also the only head unit that can be used in our CARB compliant kits.
Standard Features:- Polished
- V2 – Pressure Lubed from the Engines Oil System – Helical Cut Gears
