PS8017 LS CNC-Ported Cylinder Head 270cc Intake Ports (LS3-style Rectangle Port)

Name: PS8017 LS CNC-Ported Cylinder Head 270cc Intake Ports (LS3-style Rectangle Port)
Brand: BLUEPRINT ENGINES
SKU: 138-PS8017
Price: 1699.99 USD
Availability: InStock

^$1,699⁹⁹

Ships on 09/15/2026

Lowest Price Guarantee

LS Cylinder Head

5-Head Bolts Per Cylinder

270cc Intake Ports (LS3-style Rectangle Port)
77cc Combustion Chambers
2.165'' Intake / 1.600'' Exhaust Valves
1.295'' Dia. Springs - 130# Seat Pressure
7° Steel Retainers
Assembled, Sold Individually

This head features CNC-machined intake ports, exhaust ports and combustion chambers.
Cylinder Head Specifications
Cylinder Head Bolt Style: LS-style (5 Bolt Per Cylinder)
Intake Port Volume: 270cc (Standard Location)
Exhaust Port Volume: 106cc Round (Standard location)
Combustion Chamber Volume: 77cc
Valves: 2.165' dia. Intake / 1.600' dia. Exhaust
Valve Springs: 1.295' Diameter - Open Pressure: 360-380 lbs. @ 1.150'; Closed Pressure: 125-135 lbs. @ 1.800'; Installed Height: 1.810'; Max Lift: .650'
Spring Retainers: 7° Steel
Valve Seals: Viton
Valve Angle: 12° (3° rolled)
Valve Guides: Manganese Bronze
Intake Manifold: LS3 or Equivalent
Valve Centerline: Standard
Steam Holes: NOT Drilled
Heat Crossover: No
Machined for O-Ring: No
Accessory Bolt Holes are Drilled
Standard LS Engine Valve Cover Bolt Pattern

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

Blueprint Engines LS Cylinder Heads offer bolt on performance from a custom engineered design. These aluminum heads offer maximum output and value to fit in your budget. Heavy duty components are used on fully assembled heads. They are backed by a full 12-month warranty.

Features:

Brand new aluminum castings
Accepts LS3-style intake manifolds
Standard location intake & exhaust ports

Available CNC-ported or As-Cast ports and combustion chambers
All accessory bolt holes drilled and tapped
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