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Rebuilt Engines and Transmissions

GEX Hi-Performance Head Upgrades

Big Valve Heads for Custom Engines

Power Flow Series Racing Heads

These heads feature High Tech 1 piece Stainless Steel Swirl Polished Intake and Exhaust Valves.  A whopping 40 x 35.5 mm.  In addition, each port opening is template cut to exacting gasket specifications for 1-3/8" exhaust systems and hand blended and polished.  Then, for improved flow past the seats, each and every Power Flow head receives a precision ground 3 angle valve job and finally is hand lapped prior to assembly.  Each head is finished off with special hardened keepers, heavy duty chromoly retainers and high r.p.m. valve springs.


GEX Powerflow - Stage 1

These heads feature a mild Port and Polish for optimum velocity and significant increase in flow.   Recommended for a mild street or off-road engine.  Available from either a New or Rebuilt casting.

Part # $ Price
HE 051-375CUP 40 mm Intake X 35.5 mm exhaust, 85.5 mm cylinder bore, from New Castings (ea) 349.00
HE 051-375C/XUP 40 mm Intake X 35.5 mm exhaust, 85.5 mm cylinder bore, Rebuilt (ea) 349.00

GEX Powerflow - Stage 2
These heads are the full race Ported and Polished version with unsurpassed quality and meticulous attention to detail.  Port diameters are increased up to 12% larger than stock with a flow increase of up to 25%.  This head is the perfect choice for your Hi-Performance dream machine.  Available from New castings only.
Part # $ Price
HE 052-375CUP 40 mm Intake X 35.5 mm exhaust, 85.5 mm cylinder bore, New  (ea) 449.00



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