
COMP Cams · New
COMP Cams Rocker Arm GM LS3 1.8 3/8 Ultra
MPN 1676-1 · Store SKU cca1676-1
Supplier stock checked 11/7/2026, 12:35:17 PM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
This Ultra Pro Magnum rocker is made of black oxide coated 8650 chromemoly steel that can withstand up to 850 lbs of spring pressure. Featuring a 1.8 ratio, this rocker fits LS3 with a 3/8" diameter stud. For LS3/L99/L76 - Rectangle Port Head LS ApplicationsSingle Stud Mount Rocker - Includes Poly Lock - Requires 3/8" Studs & Ultra Pro Magnum 1.8 Ratio Rocker Arm for GM LS3 w/ 3/8" Stud
Manufacturer fitment & guides
Check 1676-1 against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y