Cylinder Head Porting, Antique and Hi-Performance American Motorcycles

POWER PORT on SHOVEL 2.0 inch intake valve.  Intake port runner diameter is increased from 1.565” to 1.675”.  Ported and matched intake manifold for Super E or Super G included.  Also includes installation of  new valves and guides set up with seals, as well as a set of high lift valve springs  Full porting with intake runners finished to 50 grit and exhaust runners to 120 grit.  Combustion chambers are fully polished.  Intakes get a 5 angle seat for good wet flow characteristics, and a radius exhaust seat for maximum scavenging.  Heads are shaved .050 to maintain compression. (all parts and labor included in price).  $1295

TORQUE PORT on SHOVEL  Includes installation of all new stock diameter valves and guides set up with seals, as well as a set of high performance valve springs (parts included in price).  Full porting with intake runners finished to 50 grit and exhaust runners to 120 grit.  Combustion chambers remain untouched with the exception of unshrouding of the valves. Intakes get a 5 angle seat for good wet flow characteristics, and a radius exhaust seat for maximum scavenging.  $899