Engines and Components Cylinder Heads and Components

Manley Performance

Manley Big Block Chevy 2.300 Dia .250in Longer Race Master Intake Valves (Set of 8)

$616.58

SKU: M004 11870-8

In Stock
In Stock
Ships by Jun 19
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Manley 11870-8 is a set of Race Master intake valves designed for Big Block Chevy engines. These valves feature a 2.300-inch diameter head and a 11/32-inch stem diameter. They are constructed from stainless steel and have an overall length of 5.494 inches, with an installed height that is .250 inches longer than stock.

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

BrandManley Performance
Part NumberM004 11870-8

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