
TPIS CNC Ported Cylinder Head Package (GM 113 Castings) SBC/TPI (Pair)
Your "113" SBC/TPI GM Head Castings are fully CNC ported. We install Manley 2.00" Intake and 1.5" Exhaust valves, .550 lift valve springs, lightweight retainers, professional valve job, deck resurface, guide plates, and your choice of 3/8" or 7/16" premium rocker studs.