AFR 260cc LS3 Mongoose cylinder heads are 100 percent 5-axis, CNC-ported, and feature titanium retainers, A356 aluminum castings, and Pac Racing springs. These CARB certified heads require 4.000 in. or larger bore applications on up through 454 cu. in. engines operating at or below 7,000 rpm—and flow over 380 cfm at 0.700 in. lift and are designed primarily for street and strip applications. Other structural features include Air Flow Research's trademark 3/4 in. thick head deck, reinforced rocker stud bosses, and thick wall runners provide unparalleled durability. Use of AFR stud girdles and full roller rocker arms are required. When it comes to building power, start with these AFR 260cc LS3 Mongoose cylinder heads.

More From This Category

Dart Cylinder Head, Assembled, Pro 1, LT 58cc Chamber, 215cc Intake Runner, AP 2.05/1.60/1.550, Each

Dart Cylinder Head, Assembled, Pro 1, LT 58cc Chamber, 215cc Intake Runner, AP 2.05/1.60/1.550, Each

$1,900.41

View
Edelbrock Cylinder Head, Victor Jr., Aluminium, Bare, 60cc Chamber, 210cc Intake Runner, For Ford, 289, 302, 351W, Each

Edelbrock Cylinder Head, Victor Jr., Aluminium, Bare, 60cc Chamber, 210cc Intake Runner, For Ford, 289, 302, 351W, Each

$1,178.50

View
Dart Cylinder Heads Parts, Valves, Springs, Retainers, Locks, Guideplates, Studs, 2.190/1.890 in. Valves, 1.405B Spring BBC 8.1, Kit

Dart Cylinder Heads Parts, Valves, Springs, Retainers, Locks, Guideplates, Studs, 2.190/1.890 in. Valves, 1.405B Spring BBC 8.1, Kit

$1,153.34

View
Dart Cylinder Head, Assembly, 320 Super Mod, 2.300/1.880/1.550D 4.500, Each

Dart Cylinder Head, Assembly, 320 Super Mod, 2.300/1.880/1.550D 4.500, Each

$3,905.52

View
Dart Cylinder Head, Assembly, 320 Full Port, 2.250/1.900/1.550D 4.500, Each

Dart Cylinder Head, Assembly, 320 Full Port, 2.250/1.900/1.550D 4.500, Each

$4,375.89

View
AFR Cylinder Head, 20° SBF 165cc, Street Heads, 58cc chambers, Pedestal Mount, No Parts, Pair

AFR Cylinder Head, 20° SBF 165cc, Street Heads, 58cc chambers, Pedestal Mount, No Parts, Pair

$3,215.27

View