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COMP Cams Rocker Arms GM LS3 1.8 3/8 Ultra

SKU: CCA1676-16

Rocker Arms

CCA Rocker Arm Kits...

COMP Cams Rocker Arms GM LS3 1.8 3/8 Ultra

SKU: CCA1676-16

Rocker Arms

CCA Rocker Arm Kits...

A$1,269.09
Available from MFR. This item is available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical order processing and release times for this part. This item is not held in our own warehouse, and actual dispatch timing may vary depending on manufacturer workload and logistics at the time of ordering.
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Description

New LS-Specific Ultra Pro Magnumâ„¢ Rocker Arms From COMP Cams Increase Ratio And Stiffness Over Stock Rockers, While Also Increasing Lift without The Need To Swap Cams. As LS engines continue to grow in popularity, COMP Cams has expanded its line of Rocker arms to build components specific to LS Applications. LS3/L99/L76 - Rectangle Port Head LS Applications Set Of 16 Stud Mount Rockers - Includes Poly Locks - Requires 3/8" Studs & Guide Plates - GM LS Flat - 5/16" Pushrod Diameter 1.8:1 Ratio

Product Overview

The Ultra Pro Magnum Roller Rocker Arms not only live up to the lofty standards of the original Pro Magnum Rockers, but they also take stud mount rocker performance, stability and value to a whole new level. The modern arched, web-like design delivers increased strength and rigidity while still reducing the moment of inertia and optimizing the dynamic balance. * Investment cast 8650 chromemoly body and arched, weblike design deliver increased strength and rigidity while reducing moment of inertia * Withstand valve spring pressures up to 850 lbs. * Unique black oxide exterior finish helps prevent corrosion, thus increasing durability * Increased retainer and valve spring clearances allow use of large diameter springs, retainers and +.050" locks without clearance or fitment issues * Feature oversized trunnions, precision-sorted needle bearings and hardened roller tips

Product Details

Amazon ASIN:B0066SWDKA
C.A.R.B. E.O. Number:N/A
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.
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. Exemption Reason:N/A
California Proposition 65:WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov
Description:Ultra Pro Magnum 1.8 Ratio Rocker Arm Set for GM LS3 w/ 3/8" Stud
Engine Family:LS3 (Factory Offset)
Maximum Valve Spring Open Pressure:850
Part Number:cca1676-16
Ratio:1.8
Rocker Arm Material:8650 Chromemoly Steel
Rocker Arm Ratio:1.8
Rocker Arm Series:Ultra Pro Magnum
Rocker Stud Diameter:3/8
Stud Diameter:3/8"
Title:Ultra Pro Magnum 1.8 Ratio Rocker Arm Set for GM LS3 w/ 3/8" Stud

Additional Information

usw w/ 3/8 Rocker arm Studs

Part Type

Engine Rocker Arm Kit

Data: v4.2 - Upd: 2026-10-13 17:48:20

Specifications

Product Attributes - Brand
COMP Cams
Product Attributes - Manufacturer's Part Number
1676-16
Product Attributes - Part Type
Rocker Arms
Product Attributes - Product Line
COMP Cams Ultra Pro Magnum Rocker Arms
Product Attributes - UPC
036584213703
Product Attributes - Rocker Arm Mounting Style
Stud
Product Attributes - Self-Aligning
No
Product Attributes - Rocker Arm Ratio
1.8
Product Attributes - Stud Size
3/8 in.
Product Attributes - Rocker Arm Style
Full roller
Product Attributes - Shims Included
No
Product Attributes - Rocker Arm Material
Chromoly
Product Attributes - Rocker Arm Body Style
Standard
Product Attributes - Rocker Arm Fasteners Included
Yes
Product Attributes - Rocker Arm Nut Style
Polylock
Product Attributes - Rocker Arm Finish
Black oxide
Product Attributes - Quantity
Sold as a set of 16.
Product Attributes - Notes
For use on rectangle port heads only.

Reference Information

Brand Name/s Comp Cams
StreetFX SKU cca1676-16
SFX Item ID 4119089
Supplier Item Code 4119089
Manufacturer SKU 1676-16
Manufacturer UPC 36584213703
Alternative References ls1, ls2, ls3, ls4, ls6, ls7

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