5.3 Semi-Hemi V-8 + 5.3 V-6 Jr Hoop: 5.260″ od x .050″ wide x .100″ tall (Not for 5.3 Hemi !) (each)

Muscle Head Stage V: Program V3-P3-F12, 2.400″ x 1.900″ Valve dia, 102cc chambers. Std Copper intake valve seats, B5 Exhaust valve seats, .025″ Jr Hoops, 5/8″ Top Row & 9/16″ Bottom Row Head stud inserts. 2.600″ lifter spread, 12ø Exhaust Flange. (pr)