LS3 Mongoose CNC
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. This product is street legal in 50 states from 2007 to 2016 emission controlled vehicles with a General Motors 6.2L LS engine. AFR heads are available bare (without parts), call our tech line for details.
Basic Package Components | |
100% 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 5.200" Overall Valve Length | |
8mm Bead Lock Exhaust Valve, 1.600" x 5.205" Overall Valve Length | |
PAC Racing Spring 1.270" OD Hydraulic Roller Dual Valve Spring, 155 lbs. on seat, .650 maximum lift, Max RPM 7000-7200 | |
7° Titanium Retainers 1.245" O.D x .885" I.D x .655" I.D | |
7° Bead Lock Valve Keepers | |
Viton Valve Seals .600" O.D x .495" I.D | |
Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D | |
Ductile Iron Intake Valve Seats 2.200" O.D x 1.750" I.D x .375" Deep | |
Ductile Iron Exhaust Valve Seats 1.650" O.D x 1.350" I.D x .375" Deep | |
8 mm Bronze Valve Guides .502" O.D x 2.550" O.A.L | |
Rocker Rail Stand |
AFR #6040
|
260cc Large Bore Competition 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 |
Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", intake 3/4" radius plate exhaust, 1 3/4" curved pipe
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. This product is street legal in 50 states from 2007 to 2016 emission controlled vehicles with a General Motors 6.2L LS engine. AFR heads are available bare (without parts), call our tech line for details.
Basic Package Components | |
100% 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 5.200" Overall Valve Length | |
8mm Bead Lock Exhaust Valve, 1.600" x 5.205" Overall Valve Length | |
PAC Racing Spring 1.270" OD Hydraulic Roller Dual Valve Spring, 155 lbs. on seat, .650 maximum lift, Max RPM 7000-7200 | |
7° Titanium Retainers 1.245" O.D x .885" I.D x .655" I.D | |
7° Bead Lock Valve Keepers | |
Viton Valve Seals .600" O.D x .495" I.D | |
Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D | |
Ductile Iron Intake Valve Seats 2.200" O.D x 1.750" I.D x .375" Deep | |
Ductile Iron Exhaust Valve Seats 1.650" O.D x 1.350" I.D x .375" Deep | |
8 mm Bronze Valve Guides .502" O.D x 2.550" O.A.L | |
Rocker Rail Stand |
AFR #6040
|
260cc Large Bore Competition 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 |
Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", intake 3/4" radius plate exhaust, 1 3/4" curved pipe
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