Brand:
PROMAXX Performance
Manufacturer's Part Number:
2151
Part Type:
Cylinder Heads
Product Line:
PROMAXX Performance Vortec 185cc Iron Cylinder Heads
Combustion Chamber Volume (cc):
64
Intake Runner Volume (cc):
185cc
Exhaust Runner Volume (cc):
60cc
Cylinder Head Style:
Assembled
Cylinder Head Material:
Cast iron
Camshaft Style:
Hydraulic flat tappet
Intake Port Shape:
Rectangular
Intake Valve Diameter (in.):
2.020 in.
CNC-Machined Combustion Chamber:
No
CNC-Machined Intake Runner:
No
CNC-Machined Exhaust Runner:
No
Intake Port Location:
Standard
Exhaust Port Shape:
Square
Exhaust Port Location:
Standard
Spark Plug Style:
Straight
Intake Valves Included:
Yes
Exhaust Valves Included:
Yes
Exhaust Valve Diameter (in.):
1.600 in.
Valve Springs Included:
Yes
Maximum Valve Lift (in.):
0.575 in.
Outside Diameter of Outer Spring (in.):
1.270 in.
Damper Spring Included:
Yes
Retainers Included:
Yes
Retainer Material:
Steel
Locks Included:
Yes
Lock Style:
Stock
Valve Stem Seals Included:
Yes
Rocker Arm Studs Included:
Yes
Rocker Arm Nut Thread Size:
3/8 in.-24
Rocker Arms Included:
No
Rocker Arm Nuts Included:
No
Guideplates Included:
Yes
Guideplate Pushrod Size:
5/16 in.
Valve Cover Mounting Style:
Center and perimeter bolt
Accessory Bolt Holes Drilled:
Yes
Valve Guides Included:
Yes
Valve Guide Material:
Manganese bronze
Valve Seats Machined:
Yes
Valve Seat Machine Style:
5-angle
Valve Seat Material:
Ductile iron
Cylinder Head Color:
Natural
Steam Holes Drilled:
No
Oiling Style:
Through pushrod
Machined for O-Ring:
No
Heat Crossover:
No
Remanufactured:
No
Quantity:
Sold as a pair.
Notes:
Intake flange is drilled to fit pre- 1986 and 1996-2000 Vortec intake manifolds. When used with Vortec manifold center holes must be plugged to prevent oil seepage. Will not fit 1987 to 1995 style intake manifolds.
PROMAXX Performance Vortec 185cc Iron Cylinder Heads
PROMAXX Performance goes one up with their Vortec 185cc iron cylinder heads. Popular with street/strip enthusiasts and Circle Track racers, PROMAXX designed these heads to work well on 350-383 applications. They're available bare or assembled; both feature screw-in studs and large diameter spring pockets. In addition, they both accept centerbolt and perimeter bolt valve covers—and are drilled for Vortec and carbureted intake applications. Greater performance at the right price!
