Engines and Components Cylinder Heads and Components

Airflow Research

BBC 385cc CNC Alum Heads Magnum 121cc Assembled

$5,019.13

SKU: A03K 2020-TI

In Stock
In Stock
Ships by Jun 10
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Description

AFR - Airflow Research 385cc Rectangle Port 24° Magnum Aluminum Cylinder Heads designed for Big Block Chevy engines. Features 121cc fully CNC'd combustion chambers and 385cc fully ported intake runners. Assembled with 2.350'' intake and 1.880'' exhaust valves, PAC Racing solid roller valve springs, titanium retainers, and chrome moly valve locks, capable of handling up to .850'' max lift.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandAirflow Research
Part NumberA03K 2020-TI

Videos

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy