1840 LS3 MONGOOSE - 12° CYLINDER HEAD 260CC LS3 CYLINDER HEAD

Your Price: $2,638.00

Part Number: 4406

Availability: In Stock

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Description

AFR’s 260cc LS3 “Mongoose” heads feature 100% CNC ported intake, exhaust and chambers using our advanced engineering and flow techniques to produce the ultimate Rectangle Port head available today. Featuring A356 aluminum castings, titanium retainers and the highest quality components, throughout. They’re designed for 4.000 or larger bore applications up to 454 CI, operating up to 7000 RPM. Emission legal for 2008 to 2015 vehicles under CARB #D-250-5.

260cc Aluminum LS1 Cylinder Heads

Part # Description Combustion Chamber

1840 CNC Ported w/parts - 6 Bolt 69cc

1845 CNC Ported w/parts - 4 Bolt 69cc

260cc Street Head Flow Chart

.200 .300 .400 .500 .600 .650 .700

Int 159 234 293 336 366 377 384

Exh 112 158 207 235 248 251 255

Basic Package Components100% CNC Ported Combustion Chambers

100% CNC Ported Exhaust Ports

100% CNC Ported Intake Ports

Competition 5-angle Valve Job

8mm Bead Lock Intake Valve, 2.165" x 5.195" Overall Valve Length

AFR #7214

8mm Bead Lock Exhaust Valve, 1.600" x 5.200" Overall Valve Length

AFR #7212

PAC Racing Spring 1.270" OD Hydraulic Roller Dual Valve Spring, 155 lbs. on seat, Max RPM 7000-7200

AFR #8019

7° Titanium Retainers 1.245" O.D x .885" I.D x .655" I.D

AFR #8512

7° Bead Lock Valve Keepers

AFR #9007

Viton Valve Seals .600" O.D x .495" I.D

AFR #6612

Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D

AFR #8042

Ductile Iron Intake Valve Seats 2.200" O.D x 1.750" I.D x .375" Deep

AFR #9060

Ductile Iron Exhaust Valve Seats 1.650" O.D x 1.350" I.D x .375" Deep

AFR #9069

8 mm Bronze Valve Guides .502" O.D x 2.550" O.A.L

AFR #9053

Rocker Rail Stand

AFR #6040

Specifications & Features:

Material

A356 Aluminum

Intake Port Volume

260cc

Intake Port Dimension

2.610"H x 1.300"W x 7/16° Radius

Intake Port Location

Stock

Exhaust Port Volume

95cc

Exhaust Port Dimension

1.540" H x 1.760" W

Exhaust Port Location

Stock

Combustion Chamber Size

69cc

Valve Cover Bolt Pattern

Center Bolt

Valve Angle

12°

Valve Spring Pocket Diameter

1.490" O.D

Max Valve Spring Pocket Machining

1.510" O.D

Deck Thickness

.750"

Minimum Bore Diameter

4.000"

Flat Mill - 65cc chamber

.006" per cc 62cc Maximum

Minimum Cross Sectional Area

2.875 sq. in.

Spark Plug Dimensions

14mm x .750" w/ Tapered or Gasket Seat

Carb EO#

D-250-5

“WARNING: This product contains a chemical known to the State of California to cause cancer and/or birth defects

or other reproductive harm. – www.P65Warnings.ca.gov”

40 points will be rewarded to you when you buy this item.

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1840 LS3 MONGOOSE - 12° CYLINDER HEAD 260CC LS3 CYLINDER HEAD

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