Vacuum Pump Systems

These innovative Crankcase/Oil Pan Vacuum Systems offer primarily the wet sump/external pump racer the very same horsepower advantages of negative crankcase pressure available only through the use of an efficient dry sump system.The system is very simple to install. The vent tubing connects the existing valve cover breather to the belt driven vacuum pump. We highly recommend STEF’S part #5122 to be installed before the pump. The pumps discharge is then vented through the system’s breather tank assembly via -10AN braided line*. Listed below are accessories that complete the vacuum system installation. Each item and kit are engineered for its best possible placement. Some fabrication may be required.

5140

5140

pulleys

pulleys

Vacuum Pump

Vacuum Pump

Recommended Option

Part Number Application
Billet Aluminum Vacuum Pump Pulley-4 3/4″
Billet Aluminum Vacuum Pump Pulley-6″
Vacuum System-Wet Sump-SBC-Belt Driven
Vacuum System-Wet Sump-BBC-Belt Driven
Vacuum System-Wet Sump-SB Ford Belt Driven
Vacuum Pump Replacement
Vacuum System-Wet Sump-BB Ford Belt Driven
Air / Oil Separator
Air/Oil Separator -12AN IN -12AN OUT Moroso
Air/Oil Separator 3/4” NPT IN 1/2” NPT OUT Star Machine

*Our pump assemblies do not include plumbing lines.

Joe’s Tech

Tech 1 – Vacuum can vary from 8 to 15 inches depending on the engine’s ring seal and overall gasket seal.
Tech 2 – When using a vacuum pump system there will be a decrease in oil pressure. This will vary with each engine and needs to be addressed for proper oil pressure.

Catalog Page

Page 59

Page 59

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