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COMP Cams 1677-1 Ultra Pro Magnum 1.8 Ratio Rocker Arms GM LS1/LS2/LS6

(Chevrolet Silverado 1500 1999-2013, Suburban 1500 2000-14, Corvette 2005-07, Silverado 2500 HD 2010-19, Tahoe 2000-14, Impala 2006-09 + 50 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

1677-1
11 reviews
Sale Price

$34.95

In Stock (6)

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Usually delivered within 2 days

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Product Details

The COMP Cams 1677-1 Ultra Pro Magnum rocker arms are engineered for high-performance GM LS1, LS2, and LS6 engines, delivering a 1.8:1 rocker ratio for increased valve lift and improved airflow. These rocker arms are designed for pedestal mount applications and provide a significant upgrade over factory components.

Key Features:

  • 1.8:1 rocker ratio increases valve lift without changing camshaft profiles
  • Precision CNC-machined from premium steel alloy for strength and durability
  • Needle bearing design reduces friction and wear for extended service life
  • Direct replacement for factory pedestal mount rocker arms
  • Compatible with GM LS1, LS2, and LS6 engines
  • Engineered for high-RPM performance and racing applications
  • Ultra Pro Magnum series construction ensures consistent geometry throughout valve travel

These rocker arms are ideal for performance enthusiasts looking to maximize power output from their LS-platform engine. The increased rocker ratio effectively multiplies cam lift, allowing more aggressive valve events without the cost of a new camshaft. Sold individually.

Products specifications

Fits

Chevrolet Silverado 1500 1999-2013, Suburban 1500 2000-14, Corvette 2005-07, Silverado 2500 HD 2010-19, Tahoe 2000-14, Impala 2006-09, Colorado 2009-12, Trailblazer 2006-08, Monte Carlo 2006-07, Avalanche 1500 2002-06 + 46 more models

Maximum Valve Spring Open Pressure

850

Rocker Stud Diameter

Pedestal Mount

AMAZON ASIN

B00N6LL19E

Prop 65

WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov

C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?

Yes, but must meet tailpipe emission standards for year of vehicle.

C.A.R.B. Exempt for On-Road Vehicles?

No

C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?

Yes, but must be a race/competition only vehicle.

C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?

Yes, but must meet tailpipe emission standards for year of vehicle.

C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?

Yes, but must meet tailpipe emission standards for year of vehicle.

Rocker Arm Material

8650 Chromemoly Steel

Rocker Arm Ratio

1.8

Rocker Arm Series

Ultra Pro Magnum

Engine Family

LS1/LS2/LS6

Great simple ordering process.

Easy billing

Great fast service!!

nice

ASAP tracking

Good price, amazon checkout simplified whole process.

Quick and easy website navigation affordable pricing on product.

Had to call technical service for a question. Hold time was very long but once connected the technician was friendly and helpful.

It was easy

Great prices... easy Web interface

cheapest price anywhere super fast service will deal with again++++++++

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