Engines and Components› Pistons and Piston Rings

Manley Performance

Manley SBC 355 3.480 Stroke/-4cc Flat 30 Bore Rotating Assembly

$2,847.06

SKU: M004 290730

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

Moderate — 2–4 hours

Description

Manley Chevy Small Block 355CID Low Compression Rotating Assembly Stroke 3.480" x Rod 6.000" ARP 2000 bolts x Piston 4.030" 1.250" C.H. -4cc Dish 10.4:1 w/64cc. Manley 4340 non-twist lightweight forged steel 3.480" 350 mains crankshaft. Crank has been heat treated, stress relieved, shot peened, nitrided and 100% magna fluxed. Manley 4340 forged steel H-beam 6.000" connecting rod with optional 7/16" ARP 2000 cap screws (1500hp rating). Rods have been heat treated, stress relieved, shot peened, nitrided and 100% magna fluxed. Manley 2618 forged aluminum platinum series pistons 4.030" 1.250" CH -4cc Dish pistons #590630 Manley Premium chromoly wrist pins. Total Seal 1/16"-1/16"-3/16" piston rings. Clevite high performance "H" series rod (narrowed) and main bearings. Internally Precision Balanced by Manley in house.

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 290730

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