| | pro master catalog high performance vacuum pumps extra vacuum increases power by ... the use of low-tension piston rings for less friction mororo s purpose-built ... smog pumps original design racing vacuum pump ˇ pulls much more vacuum than ... stock smog pumps ˇ available in 3 or 4 vane design ˇ billet aluminum housing ... ˇ special vane material for improved seal and wear ˇ special -12an ... bolts directly to big and small block chevy heads and any motor plate application 3 ... -vane vacuum pump 4-vane vacuum pump for drag race cars with dry sump oiling ... systems where increased crankcase vacuum is desired enhanced design racing ... vacuum pump ˇ 4 vane pump weighs 12 oz less than original ... style racing vacuum pump ˇ pump is 1 shorter than original ...
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