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 aluminium
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
- 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 5.195" Overall Valve
Length
- 8mm Bead Lock
Exhaust Valve, 1.600" x 5.200"
Overall Valve
Length
- PAC Racing
Spring 1.270" OD Hydraulic
Roller Dual Valve Spring, 155
lbs. on seat, Max RPM
7000-7200
- 7°
Titanium
Retainers
- 7° Bead
Lock Valve
Keepers
- Viton Valve
Seals
- Hardened Valve
Spring O.D
Locator
- Ductile Iron
Intake Valve
Seats
- Ductile Iron
Exhaust Valve Seats
-
8mm Bronze Valve
Guides
- Rocker Rail
Stand