X Rocker Arms,GM LS3 1.8 3/8 Ult Ra Pro Mag (1676-16)
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Compatibility
- Platform
- LS/LT
- Vehicle-specific fitment
- Review application details below
- Need help?
- Confirm fitment with us before ordering — (714) 202-7886
We list the engine platform a part is built for. That is not year-and-trim application data, so it does not confirm a fit on your specific vehicle.
- Est. install labor: 4.5 hrs — $563 at $125/hr. Pick Install at HRC and a 20% labor deposit ($113) is due at checkout; the balance is due at completion.
- An estimate for a stock vehicle, not a quote — we confirm it in writing when you book, before any labor is authorized. Seized hardware, prior modifications, diagnosis and machine work are quoted separately; tuning is arranged through our tuning partner. Questions: (714) 202-7886.
- Warranty & track disclaimer — read before you race it.
- Shipping & returns — rates and RMA terms.
- Installed in-house in Huntington Beach, CA — labor & service policy.
- Affirm and PayPal available at checkout.
More ways to pay at checkout
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
| Part Type | Engine Rocker Arm Kit |
|---|---|
| California Proposition 65 | WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov |
| Engine Family | LS3 (Factory Offset) |
| Maximum Valve Spring Open Pressure | 850 |
| Rocker Arm Material | 8650 Chromemoly Steel |
| Rocker Arm Ratio | 1.8 |
| Rocker Arm Series | Ultra Pro Magnum |
| Rocker Stud Diameter | 3/8" |
| Title | Ultra Pro Magnum 1.8 Ratio Rocker Arm Set for GM LS3 w/ 3/8" Stud |
| Amazon ASIN | B0066SWDKA |
| 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 Federally Certified Vehicles Manufactured Before 1967? | Yes, but must meet tailpipe emission standards for year of 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 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. Exemption Reason | N/A |
| C.A.R.B. E.O. Number | N/A |
| Weight | 8.8185 lb |
| UPC | 036584213703 |
| Country of Origin | USA |
Verified fitment · 10 applications
- Cadillac Escalade ESV Base 6.2L (2010)
- Cadillac Escalade ESV Platinum 6.2L (2010)
- Cadillac Escalade EXT Base 6.2L (2010)
- Chevrolet Camaro 1SS 6.2L (2011–2012)
- Chevrolet Camaro 2SS 6.2L (2011–2012)
- Chevrolet Silverado 1500 LT 6.2L (2011)
- Chevrolet Silverado 1500 LTZ 6.2L (2011)
- GMC Sierra 1500 SLT 6.2L (2011)
| Part No. | 1676-16 |
|---|---|
| Brand | COMP Cams |
| Part Type | Engine Rocker Arm Kit |
| Weight | 8.8185 lb |
| UPC | 036584213703 |
| Country of Origin | USA |
Platform-level fitment (Ford + GM, Phase 1). We publish the engine platform a part is built for — not year-and-trim application data — so nothing here confirms a fit on a specific vehicle. Confirm fitment with us before ordering: (714) 202-7886.
Commonly Needed With This
Parts builders usually buy alongside this one — gaskets, seals and hardware for the install. These are suggestions, not a verified fit: call (714) 202-7886 to confirm before ordering.
