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AFR LSx 245cc Fully CNC Ported Cylinder Heads, 64cc Chambers, Large Bore, NO/Parts, Bare  Product 64 of 115 in category Cylinder Heads  AFR LSx 245cc Fully CNC Ported Cylinder Heads, 72cc Chambers, Large Bore, Complete No Parts

AFR LSx 245cc Fully CNC Ported Cylinder Heads, 72cc Chambers, Large Bore, Complete w/Parts

AFR LSx 245cc Fully CNC Ported Cylinder Heads, 72cc Chambers, Large Bore, Complete w/Parts
   
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AFR LSx 245cc Fully CNC Ported Cylinder Heads, 72cc Chambers, Large Bore, Complete w/Parts

Cylinder Head - LSx Mongoose Street - Assembled - 2.08/1.60 in Valves - 245 cc Intake - 72 cc Chamber - 1.270 in Spring - Alum - GM LS-Series - PAIR

AFR's 245cc LSX "Competition" ported heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings, Titanium retainers and high quality components throughout. Recommended for race applications or radical "Pro Street" style builds with displacements up to 454 cubic inches, operating up to 6800 RPM. Requires minimum 4.000 bore size for intake valve clearance. Part numbers with an asterisk are legal for 2005 and older emissions controlled vehicles under CARB EO #D-250-4.

Basic Package Components
100% CNC Ported Combustion Chambers
100% CNC Ported Exhaust Ports
100% CNC Ported Intake Ports
Competition 5-angle Valve Job

Specifications & Features:
A356 Aluminum Material
245cc Intake Port Volume
3.315"H x 1.145"W x 11/32 top 13/32 bottom Intake Port Dimension
Stock Intake Port Location
88cc Exhaust Port Volume
1.495" H x 1.730" W Exhaust Port Dimension
Stock Exhaust Port Location
65cc or 73cc Combustion Chamber Size
Center Bolt Valve Cover Bolt Pattern
15° Valve Angle
1.510" O.D Valve Spring Pocket Diameter
1.525" O.D Max Valve Spring Pocket Machining
.750" Deck Thickness
4.000" Minimum Bore Diameter
.006" per cc 58cc Maximum Flat Mill - 65cc chamber
.006" per cc 65cc Maximum Flat Mill - 73cc chamber
2.680 sq. in. Minimum Cross Sectional Area
14mm x .750" w/Gasket Seat Spark Plug Dimensions
D-250-4 Carb EO#

Recommended Components:
GM or FAST Intake Port Gasket
GM #12558573 Exhaust Port Gasket

Suggested Manifold
FAST 90mm, 92mm, or 102mm
NGK TR55 Spark Plug Starting Range
This product was added to our catalog on Friday 22 January, 2016.
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AFR LSx 245cc Fully CNC Ported Cylinder Heads, 64cc Chambers, Large Bore, NO/Parts, Bare  Product 64 of 115 in category Cylinder Heads  AFR LSx 245cc Fully CNC Ported Cylinder Heads, 72cc Chambers, Large Bore, Complete No Parts
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Our Price: $399.99
Savings: $42.51 (10%)
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