PS8012 - Heads - 358cc BB Chevy Head
PS8012 - Heads - 358cc BB Chevy Head

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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 big block Chevy and feature 358cc intake/125cc exhaust runners, 119cc combustion chambers, and 2.3" intake/1.880" 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): 358cc
Intake Port Location: Standard
Intake Valves Included: Yes
Intake Valve Diameter (in): 2.3 in.

CFM Port Flow Average @ 28"
.100" - 116
.200" - 184
.300" - 241
.400" - 291
.500" - 328
.600" - 351


Runner Volume (cc): 125cc
Exhaust Valve Diameter (in): 1.880 in.
Exhaust Valves Included: Yes
CNC-Machined Exhaust Runner: No
Port Shape: D-Shape
Exhaust Port Location: Standard

CFM Port Flow Average @ 28"
.100" - 84
.200" - 130
.300" - 183
.400" - 226
.500" - 260
.600" - 286

Combustion Chamber

Combustion Chamber Volume (cc): 119cc
CNC-Machined Combustion Chamber: No

Valve Specs

Maximum Valve Lift (in): .650 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® Fluoroelastomer


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 in.
Damper Spring Included: Yes
Number of Springs per Valve: Dual
Retainers Included: Yes
Retainer Material: Chromemoly Steel
Locks Included: Yes
Lock Style: 10 Degree


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 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
Cover Mounting Style: Perimeter 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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