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Overview:
Get big power on a small budget with BluePrint Muscle Series cylinder heads! These lightweight aluminum heads bolt up to your big block Chevy and feature 316cc intake/124cc exhaust runners, 119cc combustion chambers, and 2.3" intake/1.880" exhaust valves. They're fully assembled with valve springs, retainers, locks, guide plates, studs, and seals. Manufacturer part number -PS8013.
- Maximum Output for Less Money!
 - Designed and Produced by BluePrint Engines
 - Fully Assembled with Heavy Duty Components
 - Backed by Our Full 12-Month Limited Warranty
 
Intake:
- Intake�Runner�Volume�(cc): 316cc
 - Intake�Port�Location: Standard
 - Intake Port Shape: Rectangular
 - Intake�Valves�Included: Yes
 - Intake�Valve�Diameter�(in): 2.3 in.
 - CFM Port Flow Average @ 28"�
 - .100" �� 102
 - .200" �� 171
 - .300" �� 225
 - .400" �� 272
 - .500" �� 308
 - .600" - 331
 
Exhaust:
- Runner�Volume�(cc): CNC- 124cc
 - Exhaust�Valve�Diameter�(in): 1.880 in.
 - Exhaust�Valves�Included: Yes
 - Port�Shape: D-Shape
 - Exhaust�Port�Location:�Raised approx. .300�� vs OEM�
 - CFM Port Flow Average @ 28"�
 - .100" �� 84
 - .200" �� 118
 - .300" �� 176
 - .400" �� 221
 - .500" �� 255
 - .600" - 282
 
Combustion Chamber:
- Combustion�Chamber�Volume�(cc): 119cc
 - CNC-Machined�Combustion�Chamber: No
 
Valve Specs:
- Maximum�Valve�Lift�(in): .700 in.
 - Intake�Valve�Angle: 24 Degrees (2 degrees rolled)
 - Exhaust�Valve�Angle: 15 Degrees
 - Valve�Guides�Included: Yes
 - Valve�Guide�Material: Manganese Bronze
 - Valve�Seats�Machined: Yes
 - Valve�Seat�Machine�Style: 5-Angle
 - Valve�Seat�Material: Chrome Nickle
 - Valve�Stem�Seals�Included: Yes
 - Valve�Stem�Seal�Style: Viton庐 Fluoroelastomerr
 
Springs:
- Valve Springs Included: Yes
 - Spring Pressure Open: 380-400 @ 1.250"
 - Spring Pressure Closed: 135 -145 @ 2.000"
 - Outside Diameter of Outer Spring (in): 1.540"
 - Damper Spring Included: Yes
 - Number of Springs Per Valve: Dual
 - Retainers Included: Yes
 - Retainer Material: Chromemoly Steel
 - Lock Included: Yes
 - Lock Style: 10 Degree
 
Pushrods:
- Guide Plates�Included: Yes
 - Guide Plate�Pushrod�Size (in): 3/8 in.
 
Rocker Arms:
- Rocker Arm Studs Included: Yes
 - Rocker Arm Stud Size (in): 7/16 x 20
 - Rocker Arms Included: No
 - Rocker Arm Nuts Included: No
 
Misc:
- Head Style: Big Block Chevy - Assembled
 - Cylinder Head Material: Aluminum
 - Cylinder Head Finish: Natural
 - Spark Plug Style: Straight
 - Cover Mounting Style: Perimeter Bolt
 - Camshaft Style: Hydraulic Roller
 - Valve Cover Mounting Style: Perimeter Bolt
 - Steam Holes Drilled: No
 - Oiling Style: Through Pushrod
 - Machined for O-Ring: No
 - Heat Crossover: No
 - 7/16-14 in. & 3/8 -16 in. Accessory Bolt Holes Machined on Ends of Heads
 
Qty:
- Sold Individually
 
Warranty:
- Backed by our full 12-month limited warranty!
 
 WARNING: Cancer and Reproductive Harm- 
www.P65Warnings.ca.gov