AFR Direct Master Warehouse Distributor - All AFR Products Available. AFR 165cc SBF Cylinder Heads. AFR`s 165cc "Street" heads are the preferred choice over re-worked factory heads. They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout, in addition these are the only AFR heads that are compatible with the OEM piston valve relief. Recommended for street, towing, or street/strip engines with displacements up to 351 cubic inches, operating up to 6000 RPM. Legal for 1995 and older emissions controlled vehicles under CARB EO #D-250-3 (Part numbers 14xx). Component upgrade and machining options are available to customize AFR Heads to your specific build.…

AFR Direct Master Warehouse Distributor - All AFR Products Available. AFR 185cc SBF Cylinder Heads. AFR`s 185cc "Street" heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Not compatible with OEM pistons. Component upgrade and machining options are available to customize AFR Heads to your specific build. AFR suggests you upgrade your springs to AFR part #8019, 1.270 O. With higher spring pressures to reduce chances of valve float associated with rpms 6200 or higher, but smaller cams with less than. 500 lift can rev to 6500 rpm with the included springs. Important: Stock 86-93 5.0L must have pistons notched for clearance.…