5/16 Steel Exhaust Valve Guide Upgrade for Power Adder Heads CID Big Block Chevy cylinder heads STD injector location is the

STD injector location is the lower cast bungs while CNC fuel rail brackets are in stock

and is designed for classes that must retain 4150 bolt spacing

and LME aftermarket intake manifolds

600" lift and over 470CFM at 1" lift

The heads share the same optimized valve locations as our record setting BE LS 12D Oval Port Cylinder Heads with 2

5/16 Steel Exhaust Valve Guide Upgrade for Power Adder Heads CID Big Block Chevy cylinder heads STD injector location is the5 16 Steel Exhaust Valve Guide Upgrade with a K Line Valve Guide Liner insert for Power Adder cylinder heads. Steel valve guides better withstand the higher exhaust temperatures experienced in power adder applications.