PS8003 - Heads - 235cc SB Chevy Head (CNC Machined Ports)
PS8003 - Heads - 235cc SB Chevy Head (CNC Machined Ports)

Bolt 'em on and grip the wheel tight!

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 precision CNC-machined 235cc intake/66cc exhaust runners, 69cc combustion chambers, and 2.125" 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
■ CNC-machined combustion chambers and intake runners
■ Fully assembled with heavy duty components
■ Backed by our full 12-month limited warranty




Intake Runner Volume (cc): 235cc
Intake Port Location: Standard
Intake Valves Included: Yes
Intake Valve Diameter (in): 2.125 in.
CNC Machined Intake Runner: Yes


Runner Volume (cc): CNC- 66cc
Exhaust Valve Diameter (in): 1.600 in.
Exhaust Valves Included: Yes
CNC-Machined Exhaust Runner: Yes
Port Shape: Square-Port
Exhaust Port Location: Standard

Combustion Chamber

Combustion Chamber Volume (cc): 69cc
CNC-Machined Combustion Chamber: Yes

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


Valve Springs Included: Yes
Spring Pressure Open: 360 - 380 @ 1.150
Spring Pressure Closed: 125-135 @ 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 Arms

Rocker Arm Studs Included: Yes
Rocker Arm Stud Size (in): 7/16 in.
Rocker Arms Included: No
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 & Center Bolt
Accessory Bolt Holes Drilled: Yes
Oiling Style: Through Pushrod
Machined for O-Ring: No
Heat Crossover: No


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Backed by our full 12-month limited warranty!

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