ProMaxx 22150 Series One 185 SBC Cast Iron Bare Heads

Fits Vehicle SBC

The 185 Vortec has taken the Vortec head to the next level. Bigger runner and bigger valves mean more power!  Just ask dirt track racer Shawn Guffey, who has won every race and back to back track championships since installing Vortec heads on his A Hobby ride.

Features:

• Series One SBC 185 Vortec Cast Iron 2.02/1.60/64cc Bare (Pair)
• 185cc intake runners
• 202/1.60 valve size
• Screw in studs
• Large spring pockets
• Multiple intake bolt patterns
• Multiple valve cover patterns
• 906 casting number
• Hardened seats
• Machined and Assembled in USA
• Assemblies include: 21-4 valves 3/8 stud guide plates
• Sold In Pairs

Flow Chart

Cylinder Head Options

Technical Specs

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 Tappet .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 ……………… 5-angle
Head Bolts……………. ARP 135-3601
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

Brand

ProMaxx