BluePrint HP8103 Muscle Series 220cc SB Chevy Head, Assembled
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InfoGet 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 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
Runner Volume (cc): CNC- 65cc
Exhaust Valve Diameter (in): 1.600 in.
Exhaust Valves Included: Yes
Port Shape: Square-Port
Exhaust Port Location: Standard
CFM Port Flow Average @ 28"
.100" - 112
.200" - 155
.300" - 186
.400" - 203
.500" - 208
.600" - 216
Combustion Chamber Volume (cc): 64cc
CNC-Machined Combustion Chamber: No
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
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
Guide Plates Included: Yes
Guide Plate Pushrod Size (in): 5/16 in.
Rocker Arm Studs Included: Yes
Rocker Arm Stud Size (in): 7/16 in.
Rocker Arms Included: N/A
Rocker Arm Nuts Included: No
Head Style: Assembled
Cylinder Head Material: Aluminum
Cylinder Head Finish: Natural
Spark Plug Style: Straight – .750 Reach Gasket
Cover Mounting Style: Perimeter & Centert Bolt
Accessory Bolt Holes Drilled: Yes
Steam Holes Drilled: No
Oiling Style: Through Pushrod
Machined for O-Ring: No
Heat Crossover: No
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Q & A
Speedway Motors and Classic Trucks called on GM Performance to power their ground up rebuild of a 1952 Chevy truck that was built in celebration of Speedway Motors’ 65th anniversary.