Description
PROMAX CAST IRON HEADS TO SUIT CHEV SB VORTEC,
Combustion Chamber ……64cc
Weight …………………………110 lbs. Assy / 100 lbs. Bare
Intake Runner ……………. 185cc 200cc
Exhaust Runner …………..62cc
Intake Valve Size …………2.02″
Exhaust Valve Size …….. 1.60″
Spring Pressure
Hydraulic Flat Taappet .575″ max lift
Closed………………………..115 lbs. @ 1.800″
Open………………………….310 lbs. @ 1.225″
Hydraulic Roller .600″ max lift
Closed ………………….. 145 lbs. @ 1.800”
Open ……………………. 325 lbs. @ 1.200”
Solid Roller .700″ max lift
Closed…………………..230 lbs. @ 1.900″
Open…………………….600 lbs. @ 1.200″
Valve Guide ……………Cast Iron
Valve Seal Material … Viton
Retainer Material ……Steel
Valve Job ………………3-angle
Head Bolts……………. ARP 134-3601
Valve Spacing ………. OEM
Valve Seats ……………Hardened Steel
Intake Gasket ………..Fel-Pro 1255
Exhaust Gasket ……. Fel-Pro 1404
Head Gasket ……….. Fel-Pro 1014, 1044 or equivalent
Spark Plug …………. Tapered Seat Plug-AC Delco R44LTS
