Engines and Components› Pistons and Piston Rings

Manley Performance

Manley Small Block Chevy 2.080 +.300 Race Flo Intake Valves

$294.54

SKU: M004 11574-8

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Description

The Manley Performance 11574-8 is a set of 8 intake valves designed for Chevrolet Small Block engines. These valves feature a 2.080-inch head diameter and a 5.240-inch length.

The valves have a 7° dish top of head and a Pro Flo underhead angle/radius of 12° x 3/8. The stem diameter is 0.342 inches, and the tip length is 0.290 inches.

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 11574-8

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