install items manifolds efi heads cams access nitrous water pumps access ... components including larger-than-stock valve springs to handle most high-lift ... cams stock port location for compatibility with ... level race applications · available for small-block big-block and ls1 chevy and small-block ... combustion chambers rpm xt ls1/ls2 chevy head #61949 one-piece swirl-polished ... valve springs to match solid lifter or roller cams cnc port matched intake and ... a356 aluminum heat-treated to t-6 specs for maximum strength most edelbrock ... but not installed · available for chevy ford and pontiac go to pages 163-165 ...
exhaust access water pumps nitrous cams access heads efi manifolds install ... kits power pkg cylinder heads small-block chevy e-tec s/b chevy street legal ... series aluminum valve covers #4246 4247 stock centerbolt or new victor series valve ... for high rpm or large displacement small-blocks e-tec 170 head #60979 e-tec heads have ... e-tec · for 302 327 350 400 c.i.d s/b chevys with vortec-style manifolds · high- ... ports are .200 taller than standard small-block chevy heads · spark plugs positioned ... or standard valve covers and most stock exhaust manifolds · exhaust port exits ... in the december 04 issue of super chevy magazine the 355-inch chevy cranked out ... rpm air-gap manifold and performer rpm roller cam they wrote the results were way ... department the e-tec 170s with their smaller runner volumes increased torque by over ...