Engines and Components› Engines, Blocks and Components

Manley Performance

Manley Rotating Assembly, SBC 383 3.750 STROKE/+11cc DOME

$3,708.53

SKU: M004 290940RHX

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

Professional / shop required

Description

This Manley Rotating Assembly (MPN: 290940RHX) is designed for Small Block Chevrolet (SBC) 383 stroker engines. It features a lightweight 4340 forged steel crankshaft and 4340 forged steel H-Beam connecting rods with 7/16” ARP 2000 cap screws for high horsepower applications (up to 1,500 HP). The assembly also includes 2618 forged aluminum Platinum Series pistons with Premium Chrome Moly wrist pins. It requires a 350 SBC block with a 350 Main Journal Diameter.

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 290940RHX

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