Accessory Bolt Holes Drilled	Yes
CNC-Machined Combustion Chamber	No
CNC-Machined Exhaust Runner	No
CNC-Machined Intake Runner	No
Combustion Chamber Volume (cc)	68
Cylinder Head Finish	Natural
Cylinder Head Material	Aluminum
Cylinder Head Style	Assembled
Damper Spring Included	No
Exhaust Port Location	Standard
Exhaust Port Shape	Rectangular
Exhaust Runner Volume (cc)	130cc
Exhaust Valve Diameter (in)	1.740 in.
Exhaust Valves Included	Yes
Guideplate Pushrod Size	3/8 in.
Guideplates Included	Yes
Heat Crossover	No
Intake Port Location	Standard
Intake Runner Volume (cc)	215cc
Intake Valve Diameter (in)	2.125 in.
Intake Valves Included	Yes
Lock Style	10 degree
Locks Included	Yes
Machined for O-Ring	No
Maximum Valve Lift (in)	0.575 in.
Number of Springs Per Valve	Dual
Oiling Style	Through pushrod
Outside Diameter of Outer Spring (in)	1.550 in.
Quantity	Quantity of 2
Retainer Material	Steel
Retainers Included	Yes
Rocker Arm Nut Thread Size	3/8-24 in.
Rocker Arm Nuts Included	No
Rocker Arm Studs Included	Yes
Rocker Arms Included	No
Steam Holes Drilled	No
Valve Cover Mounting Style	Perimeter bolt
Valve Guide Material	Manganese bronze
Valve Guides Included	Yes
Valve Seat Machine Style	3-angle
Valve Seat Material	Ductile iron
Valve Seats Machined	Yes
Valve Springs Included	Yes
Valve Stem Seal Style	Positive stop
Instructions Summit Racing Part Number: EDL-60049(2) Fitment Please see the "Compatibility" link at the top of the listing. Fitment information may not be available for all products.  IMPORTANT - Please be sure to view the "Notes" option for more details if it is available. Please use the "Ask Seller a Question" link for fitment questions, and include your vehicle's year, make, model, engine size and drive train to ensure an accurate and timely response. Shipping We ship within 2 business day(s). We do not ship to APO/FPO or Post Office box addresses. We use UPS and Fedex for most orders.  We are unable to guarantee a specific carrier. In-stock items can ship from three locations - Georgia, Nevada or Ohio. To avoid delays, we ship the order from your nearest stocking warehouse. This means orders may arrive in multiple boxes or at different times. We do not ship to Alaska, Hawaii, Puerto Rico or Guam on eBay. We are unable to accept Summit Racing Gift Certificates or Summit Bucks on eBay. Payment We accept PayPal only on eBay.  We do not accept PayPal E-Checks PayPal Immediate Payment is required on all listings - please use the eBay cart for multiple purchases We do charge sales tax in Ohio (6.75%), Nevada (7.725%) and Georgia (7%). State taxes will be calculated at checkout. Returns We offer a 90-day Handshake Guarantee.  Please see our "About Me" page for more details about our Return Policy. Buyer pays return shipping. Customer Support Our customer support is available 24/7. Emails are normally answered within 24 hours,  not including weekends or holidays. Please contact us at 800-230-3030 or via email using the "Ask Seller a Question" link from this listing.