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COMP Cams 1676-1 Ultra Pro Magnum 1.8 Ratio Rocker Arm GM LS3 3/8" Stud

(Chevrolet Silverado 1500 2007-13, Suburban 1500 2007-09, Camaro 2010-16, Corvette 2008-13, Tahoe 2008-09, Avalanche 2007-09, SS 2014-17 + 10 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

1676-1
13 reviews
Sale Price

$51.34

1 left at this price

delivery box

Usually delivered within 2 days

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Product Details

The COMP Cams Ultra Pro Magnum 1676-1 rocker arm delivers professional-grade performance for GM LS3 engines with a precision-engineered 1.8:1 rocker ratio. Designed for high-performance street and racing applications, this rocker arm provides increased valve lift and duration compared to stock components, maximizing airflow and power potential.

Key Features:

  • 1.8:1 rocker ratio for enhanced valve lift and performance
  • Specifically designed for GM LS3 engine platforms
  • 3/8" stud mount configuration for secure installation
  • Ultra Pro Magnum construction with hardened steel components
  • Precision needle bearing fulcrum for reduced friction and wear
  • CNC-machined body ensures accurate geometry and consistent performance
  • Self-aligning design maintains proper valve train alignment
  • Suitable for high-lift camshaft applications up to .700" lift

The Ultra Pro Magnum rocker arm features COMP Cams' proven needle bearing technology that significantly reduces friction compared to standard roller tip rockers, improving valve train stability at high RPM. The investment-cast, heat-treated steel body provides exceptional strength and durability for demanding performance applications. These rocker arms are engineered to work with factory cylinder heads or aftermarket performance heads equipped with 3/8" rocker studs.

Products specifications

Fits

Chevrolet Silverado 1500 2007-13, Suburban 1500 2007-09, Camaro 2010-16, Corvette 2008-13, Tahoe 2008-09, Avalanche 2007-09, SS 2014-17; GMC Yukon XL 1500 2007-14, Sierra 1500 2007-13, Yukon 2007-14, Sierra 2008-16; Hummer H2 2008-09 + 5 more models

Engine Family

LS3 (Factory Offset)

Maximum Valve Spring Open Pressure

850

AMAZON ASIN

B0066SWD1E

Prop 65

WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov

Rocker Stud Diameter

3/8

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

I would like expected shipping date

always a great deal here

Just ordered, website is easy to use. Hope the shipping and receiving go well. Wow, received order in 4 days! Great service!

Good product and awesome delivery. Thank you

Great prices and easy payment options.

So far so good!

Have what I needed n as easy as 1-2-3

Awesome csr best price will buy from again...

great

Ordered a Thule hitch and was a little skeptical because I hadn't heard of this company. I was pleasantly surprised by the quickness of response when I ordered, I received an email immediately, and the order arrived just 2 days after it was ordered. This company goes to the top of my list.

Great prices, reasonable shipping costs. Shipped within 3 days of order. Didn't receive discount for valid coupon code (25OffShipping). No response to 2 emails. No indication of expected delivery date. Lots of unknowns but you can't beat the pricing.

Autoplicity leads the way ! Others take a lesson !! Great prices and excellent service !!!

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