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Vehicle Info Needed225cc Aluminum Cylinder Heads Small Block Chevy
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Lowest Price Guarantee- 225cc Aluminum Cylinder Heads
- Small Block Chevy
- 2.08''/1.60'' Valves
- 225cc Intake Runner
- 64cc Combustion Chamber
- Straight Plug
- Assembled
- Sold as pairs
Technical Specifications and Recommended Components:
Combustion Chamber - 64cc
Weight - 55.00 lbs
Intake Runner - 225cc
Exhaust Runner - 62cc
Intake Valve Size - 2.08"
Exhaust Valve Size - 1.60"
Max. Valve Spring Lift - .575" Hydraulic Flat Tappet
Spring Pressure - Closed 115 lbs. @ 1.800", Open 315 lbs. @ 1.225"
Valve Seal Material - Viton
Valve Guide - Manganese Bronze
Retainer Material - Steel
Valve Job - 5-angle
Head Bolts - ARP 070-134-3601
Valve Spacing - OEM
Valve Seats - Hardened Steel
Intake Gasket - Fel-Pro 375-1206 or 375-1266
Exhaust Gasket - Fel-Pro 375-1405
Head Gasket - Fel-Pro 375-1004 or 375-1094
Spark Plug - 750" Reach Gasket Seat
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
- Patriot Performance expanded the Freedom Series heads to include their newest 225cc runner. To achieve the best flowing cylinder heads Patriot performs their 2.08''/1.60'' 5-angle valve job, hand blend the valve bowl area, and mill to exact tolerances. To this they add only the highest quality EV8 2.08''/1.60'' stainless valves, .575'' lift (hyd. flat tappet) springs, steel retainers, 3/8'' studs, bronze guides, and guide plates. These heads are a great addition to engine builds that are 383ci and larger.
Note: Due to high intake runner position, most intakes will require 1/8" thick Fel Pro 1266 gasket.
Technical Specs:
Combustion Chamber: 64cc
Intake Runner: 225cc
Exhaust Runner: 62cc
Intake Valve: 2.02'' or 2.08''
Exhaust Valve: 1.60''
Max. Valve Spring Lift: 0.575''
Spring Pressure Closed: 115 lbs. @ 1.800''
Spring Pressure Open: 310 lbs. @ 1.225''
Retainer Material: Steel
Valve Seal Material: Viton
Valve Guide Material: Manganese Bronze
Valve Job: 5-angle
Uses .750 reach gasket seat spark plugs (Autolite 410-AR3924 Suggested)
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