Engine Cylinder Head

improving air-flow & overall performance potential – These heads have a 24.5 Deg x 4.4 Deg intake valve angle, 15.5 Deg x 4.2 Deg exhaust valve angle and exhaust ports that have been raised 0.125" but are still in the stock location – Spark plug angles have been modified to produce a smooth flame front for increased fuel efficiency & maximum power – combustion chamber size of 118cc – Equipped with valve springs for use in hydraulic flat tappet applications

Additional Attributes:

GTIN: 00085347795598
CNC Ported: Yes
Combustion Chamber Volume: 118.0
Deck Height: 10.2
Deck Thickness: 0.562
Exhaust Valve Diameter: 1.880
Grade Type: Performance
Guide Plate Material: Hardened Steel
Guide Plates Included: Yes
Head Casting Number: 31-5145
Intake Runner Volume: 334.0
Intake Valve Diameter: 2.300
Material: Aluminum
Push Rod Diameter: 0.375
RGL: WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65warnings.ca.gov.
Rocker Arm Stud Diameter: 0.437
Valve Spring Diameter: 1.500
Valve Spring Maximum Lift: 0.700
Valve Stem Diameter: 0.341

Extended Information:

Emissions : EPA Eligible
Life Cycle Status: Obsolete

Packaging:

Quantity of Each: 1
Package UOM: EA
Dimension: 24.75 x 11 x 8.5 inches
Weight: 44 PG