AFR's LS3 Mongoose cylinder heads are fully assembled, aluminum GM LS-Series heads built with 260cc intake runners and 69cc combustion chambers. They use an angle-plug design and ship as a matched pair ready to bolt on.
Specifications:
- Type: LS3 Mongoose
- Condition: Assembled
- Intake Valve: 2.165 in
- Exhaust Valve: 1.600 in
- Intake Runner Volume: 260 cc
- Combustion Chamber Volume: 69 cc
- Spring Diameter: 1.270 in
- Spark Plug Style: Angle Plug
- Material: Aluminum
- Quantity: Pair
- Part Number: 1840
Applications:
- GM LS-Series
FAQ
What engine platform does this cylinder head fit?
It's built for the GM LS-Series platform.
Is this head assembled or bare?
It ships fully assembled, ready to install.
What size are the intake and exhaust valves?
2.165 in intake and 1.600 in exhaust valves.
What spark plug style does it use?
An angle-plug design.
How many heads come in this listing?
It's sold as a matched pair.

