5/16 Steel Exhaust Valve Guide Upgrade for Power Adder Heads CID Big Block Chevy cylinder heads and LME aftermarket intake manifolds

and LME aftermarket intake manifolds

CNC chamber softening that incorporates the generic radial conical softening like most companies use

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

Valve lengths fur our hydraulic cylinder heads measure 5

Upper Injector location has been shown in testing to make slightly more power than the lower placement

5/16 Steel Exhaust Valve Guide Upgrade for Power Adder Heads CID Big Block Chevy cylinder heads and LME aftermarket intake manifolds5 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.