Cylinder Head, 290cc, Solid Roller, Aluminum, Assembled, 0.850 in. Lift, Chevrolet, Big Block Mark IV, Each
Combustion Chamber Volume (cc):
112
Intake Runner Volume (cc):
290cc
Exhaust Runner Volume (cc):
135cc
Cylinder Head Style:
Assembled
Cylinder Head Material:
Aluminum
Intake Port Shape:
Rectangular
Intake Valve Diameter (in.):
2.300 in.
Cylinder Head Finish:
Natural
CNC-Machined Combustion Chamber:
No
CNC-Machined Intake Runner:
No
CNC-Machined Exhaust Runner:
No
Combustion Chamber Style:
Heart
Intake Port Location:
Standard
Exhaust Port Shape:
Oval
Exhaust Port Location:
Raised
Spark Plug Style:
Angle
Intake Valves Included:
Yes
Exhaust Valves Included:
Yes
Exhaust Valve Diameter (in.):
1.880 in.
Valve Springs Included:
Yes
Maximum Valve Lift (in.):
0.850 in.
Outside Diameter of Outer Spring (in.):
1.620 in.
Damper Spring Included:
Yes
Number of Springs Per Valve:
Dual
Retainers Included:
Yes
Retainer Material:
Chromoly steel
Locks Included:
Yes
Lock Style:
7 degree
Valve Stem Seals Included:
Yes
Valve Stem Seal Style:
Positive stop
Rocker Arm Studs Included:
Yes
Rocker Arm Nut Thread Size:
7/16 in.-20
Rocker Arms Included:
No
Rocker Arm Nuts Included:
No
Guideplates Included:
Yes
Guideplate Pushrod Size:
5/16 in.
Valve Cover Mounting Style:
Perimeter bolt
Accessory Bolt Holes Drilled:
Yes
Intake Valve Angle:
24/4
Exhaust Valve Angle:
15/4
Valve Guides Included:
Yes
Valve Guide Material:
Manganese bronze
Valve Seats Machined:
Yes
Valve Seat Machine Style:
3-angle
Valve Seat Material:
Powdered metal
Steam Holes Drilled:
No
Oiling Style:
Through pushrod
Machined for O-Ring:
No
Heat Crossover:
No
Quantity:
Sold individually.