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Pontiac GTO Evac Pump Kit - Got Vacuum For Your Hi-Po Engine?

Evac Pump Kit Evac Pump
The evac pump is then mounted... 
   
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Evac Pump Kit Evac Pump
The evac pump is then mounted to the aluminum bracket with a 3/8 x 6-inch bolt. Since the drivebelt has yet to be installed, the bolts are hand-tightened, as is the 3/8 x 1-inch bolt and washer that attaches the pump-adjustment bracket to the back of the pump.
Evac Pump Kit Drivebelt Installation
Installation of the drivebelt... 
   
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Evac Pump Kit Drivebelt Installation
Installation of the drivebelt begins by pushing down the evac pump, allowing maximum clearance to slip the drivebelt over the crankshaft mandrel drive and pump pulley.
Evac Pump Kit Pcv Valve
In order to operate correctly,... 
   
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Evac Pump Kit Pcv Valve
In order to operate correctly, the vacuum pump must have a sealed system to draw pressure out of. If so equipped with a PCV valve, the hole in the valley pan will have to be plugged. Since the car wasn't equipped with a PCV valve and had breathers in both valve covers, one breather would have to be capped while the other side was retrofitted to include a bung that would accept an AN-style fitting.
Evac Pump Kit Valve Cover
Rather than utilizing the... 
   
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Evac Pump Kit Valve Cover
Rather than utilizing the owner's tall Moroso chrome valve covers, a set of Butler Performance 2 3/4-inch Pontiac billet valve covers were ordered. When combined with a set of 5/16-inch thick valve-cover gaskets, the valve covers will clear aftermarket rocker-arm assemblies.
Evac Pump Kit Secure Pump
To finish off the installation,... 
   
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Evac Pump Kit Secure Pump
To finish off the installation, the -12 hose length that goes from the pump to the breather was cut to size, and a 45-degree fitting was threaded onto the hose and attached to the breather tank.
Evac Pump Kit Breather Tank
Once complete, the GTO was... 
   
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Evac Pump Kit Breather Tank
Once complete, the GTO was loaded onto the DynoJet chassis dyno at Real Performance Motorsports where it proceeded to pull a maximum of 5 inches of vacuum at 6,000 rpm.
Evac Pump Kit Moroso Evac Pump Kit
With the standard evac pump... 
   
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Evac Pump Kit Moroso Evac Pump Kit
With the standard evac pump dyno testing complete, the Moroso Evac Pump Kit (PN BPI-EVAC-MOR, $799 retail) is readied for installation. Capable of generating up to 14 inches of vacuum, the pump is also fully rebuildable at home with a Moroso Service Rebuild Kit.
Evac Pump Kit Pulley On Crankshaft
After removing the standard... 
   
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Evac Pump Kit Pulley On Crankshaft
After removing the standard pump and drive pulley, the Moroso Pump Kit installation begins by installing the Moroso-specific pump pulley onto the crankshaft.
Evac Pump Kit Pump Bracket
The pump-mounting bracket... 
   
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Evac Pump Kit Pump Bracket
The pump-mounting bracket is positioned onto the passenger-side cylinder head, and a 3/8-inch bolt with a flat washer is hand-threaded into the top mounting hole.

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Pontiac Solstice Research
Pontiac Solstice Get updated on all your car buying needs from safety features, to specs, to crash test ratings and options. Get all the information you need if you are interested in buying a new car like the Pontiac Solstice. The L4 standard engine in the Solstice gives you 173 horsepower with an estimated 22 mpg. It has a trade in value of $15,948.00 which should come in handy when you go to shop for your next car. The Pontiac Torrent and the Pontiac G6 are other vehicles that might interest you.

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