Vacuum pump?
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GZ Motorsports makes the only complete kit, and also uses the tensioner pulley to drive the pump which saves a lot of headaches and makes for a easy bolt-on installation.
GZ pumps are also designed to last a lot longer on the street than the other brands. www.GZMOTORSPORTS.com
GZ Motorsports makes the only complete kit, and also uses the tensioner pulley to drive the pump which saves a lot of headaches and makes for a easy bolt-on installation.
GZ pumps are also designed to last a lot longer on the street than the other brands. www.GZMOTORSPORTS.com
GZ Motorsports makes the only complete kit, and also uses the tensioner pulley to drive the pump which saves a lot of headaches and makes for a easy bolt-on installation.
GZ pumps are also designed to last a lot longer on the street than the other brands. www.GZMOTORSPORTS.com
I never dyno'd any our race cars without the pump but have had zero issues with very large nitrous setups and the gz pump setup. You also have to adjust how much vacuum the pump pulls to get the most from it.
He also has built pretty much the 1st ls dirt motor years ago which got some rules made against it.
Most other stuff gains at least 30 on smaller 400 cube bad street motor stuff. More on stuff with poor oil pan and control, and over 8K race stuff.
BTR has a vacum pump to test the motors for leak, its 220v. You need to have it sealed The LS stuff is not that bad, the rear main is reversed, VC gasket are captured, and all others. The older stuff can be alot harder to seal.
I run 15"HG on my 555 BBC and don't seem to suck dust through the seals, although I race on pavement so I can't be sure....








