DESCRIPTION:

• Get big power on a small budget with BluePrint Muscle Series cylinder heads! These lightweight aluminum heads bolt up to your small block Chevy and feature 220cc intake/67cc exhaust runners, 64cc combustion chambers, and 2.08" intake/1.60" exhaust valves. They're fully assembled with valve springs, retainers, locks, guideplates, studs, and seals.
  • 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): 220cc
• Intake Port Location: Standard
• Intake Valves Included: Yes
• Intake Valve Diameter (in): 2.08 in.
• CFM Port Flow Average @ 28"
  • .100" 76
  • .200" 137
  • .300" 189
  • .400" - 228
  • .500" 254
  • .600" - 258

EXHAUST:

• Runner Volume (cc): CNC- 65cc
• Exhaust Valve Diameter (in): 1.600 in.
• Exhaust Valves Included: Yes
• Port Shape: Square-Port
• Exhaust Port Location: Raised
• CFM Port Flow Average @ 28"
  • .100" 112
  • .200" 155
  • .300" 186
  • .400" 203
  • .500" 208
  • .600" - 216

COMBUSTION CHAMBER:

• Combustion Chamber Volume (cc): 64cc
• CNC-Machined Combustion Chamber: No

VALVE SPECS:

• Maximum Valve Lift (in): .650 in.
• Intake Valve Angle: 23 Degrees
• Exhaust Valve Angle: 23 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 Fluoroelastomer

SPRINGS:

• Valve Springs Included: Yes
• Spring Pressure Open:360-380 @ 1.150
• Spring Pressure Closed: 115-135 @ 1.800
• Outside Diameter of Outer Spring (in): 1.295 in.
• Damper Spring Included: Yes
• Number of Springs per Valve: Dual
• Retainers Included: Yes
• Retainer Material: Chromemoly Steel
• Locks Included: Yes
• Lock Style: 7 Degree

PUSHRODS:

• Guide Plates Included: Yes
• Guide Plate Pushrod Size (in): 5/16 in.

ROCKER ARMS:

• Rocker Arm Studs Included: Yes
• Rocker Arm Stud Size (in): 7/16 in.
• Rocker Arms Included: N/A
• Rocker Arm Nuts Included: No

MISC:

• Head Style: Assembled
• Cylinder Head Material: Aluminum
• Cylinder Head Finish: Natural
• Spark Plug Style: Straight .750 Reach Gasket
• Spark Plug Placement: Vortec
• Cover Mounting Style: Perimeter & Centert Bolt
• Steam Holes Drilled: No
• Oiling Style: Through Pushrod
• Machined for O-Ring: No
• Heat Crossover: No
• 3/8 -16 in. Accessory Bolt Holes Machined On Ends Of Heads
• Exhaust ports raised approx .500 vs oem iron castings

QTY:

• Sold Per Single