Engines and Components› Connecting Rods and Components

Manley Performance

Manley Chevrolet Big Block Pro-Series I-Beam Connecting Rod Set - 6.535in Length

$2,772.43

SKU: M004 14166L-8

In Stock
In Stock
Ships by Jun 18
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Professional / shop required

Description

Manley Pro Series I Beam Connecting rods are forged from 4340 aircraft quality vacuum degassed material. They are fully machined to produce the lightest and strongest rod possible, shot peened after machining to Mil specs, and 100% individually magnafluxed. Cap fasteners are 7/16" ARP L19 rod bolts, with an optional upgrade to 7/16" ARP Custom Age 625+ cap screws. These rods are rated for 1000 HP in oval track applications and over 1600 HP in drag racing.

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 14166L-8

Videos

H Beam vs I Beam Connecting Rods | Which is For Your Build?

H Beam vs I Beam Connecting Rods | Which is For Your Build?
Manley Performance Turbo Tuff I-Beam Connecting Rods | Sport Compact Shortblock

Manley Performance Turbo Tuff I-Beam Connecting Rods | Sport Compact Shortblock
Comparing Manley I-Beam to Tri-Beam - Product Highlight - Real Street Performance

Comparing Manley I-Beam to Tri-Beam - Product Highlight - Real Street Performance
H Beam or I Beam Connecting Rods | Summit Racing Quick Flicks

H Beam or I Beam Connecting Rods | Summit Racing Quick Flicks
H Beam vs. I Beam CONNECTING RODS

H Beam vs. I Beam CONNECTING RODS
Manley Performance Factory Tour - Pistons, Connecting Rods, Valvetrain Manufacturing | RS Garage

Manley Performance Factory Tour - Pistons, Connecting Rods, Valvetrain Manufacturing | RS Garage
Manley Connecting Rods

Manley Connecting Rods
How to Choose the Right Connecting Rods

How to Choose the Right Connecting Rods
piston and connecting rod assembla

piston and connecting rod assembla
Side by side Manley vs Cxracing Rods unbox English version

Side by side Manley vs Cxracing Rods unbox English version

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.

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