Brand:
Manufacturer's Part Number:
Part Type:
Product Line:
Summit Racing Part Number:
Cylinder Heads Included:
Yes
Camshaft Included:
Yes
Camshaft Type:
Hydraulic Flat Tappet
Duration at 050 inch Lift:
234 int./244 exh.
Advertised Duration:
303 int./313 exh.
Valve Lift with Factory Rocker Arm Ratio:
0.487 int./0.508 exh.
Intake Manifold Included:
Yes
Fuel Delivery Style:
Carbureted
Carburetor Included:
No
Throttle Body Included:
No
Fuel Rails Included:
No
Fuel Injectors Included:
No
Intake Material:
Aluminum
Intake Color:
Natural
Intake Style:
Dual plane
Timing Chain and Gears Included:
Yes
Lifters Included:
Yes
Gaskets Included:
Yes
Cylinder Head Style:
Assembled
Cylinder Head Material:
Cast aluminum
Cylinder Head Color:
Natural
Combustion Chamber Volume (cc):
64
CNC-Machined Combustion Chamber:
No
Intake Runner Volume (cc):
200cc
Exhaust Runner Volume (cc):
70cc
CNC-Machined Intake Runner:
No
CNC-Machined Exhaust Runner:
No
Intake Port Location:
Standard
Exhaust Port Location:
Standard
Spark Plug Style:
Straight
Intake Valves Included:
Yes
Intake Valve Diameter (in.):
2.020 in.
Exhaust Valves Included:
Yes
Exhaust Valve Diameter (in.):
1.600 in.
Valve Springs Included:
Yes
Outside Diameter of Outer Spring (in.):
1.430 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 Arms Included:
No
Rocker Arm Studs Included:
Yes
Rocker Arm Nuts Included:
No
Guideplates Included:
Yes
Pushrods Included:
No
Valve Covers Included:
No
Accessory Bolt Holes Drilled:
Yes
Valve Guides Included:
Yes
Valve Guide Material:
Phosphorous bronze
Valve Seats Machined:
Yes
Valve Seat Material:
Ductile iron
Steam Holes Drilled:
No
Oiling Style:
Through pushrod
Machined for O-Ring:
No
Heat Crossover:
No
Quantity:
Sold as a kit.
Notes:
Pushrod length checker included. Recommended 3,000+ RPM stall torque converter and gearing. 9.75:1 Minimum recommended compression ratio. The attached dyno results were with a GM ZZ4 short block (12561723) as the base, a SUM-M08750MS carburetor with 74/76 jetting and 39° total advance.
Summit Racing™ top end engine kits feature a pair of fully assembled Summit Street & Strip® aluminum cylinder heads matched up with a Summit Street & Strip® aluminum intake manifold, and a Summit Racing™ hydraulic cam and lifter kit. You also get a Summit Racing™ timing chain set and cam locking plate, a complete set of Trick Flow® gaskets, a Trick Flow® pushrod checker, and hardware from Summit Racing™ and GM Performance.