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Ships within 48 hours · Estimated delivery Aug 5 - Aug 10
Carburetor Flange Style: Spread Bore (4150 Square Bore with Included Adapter)
- GMC Sierra 1500 / 2500 / 3500 (1999–2015)
the dual-plane runner layout delivers excellent drivability for street cars
Mercury Cougar / Cyclone (302 / 351W / FE / 429 equipped)
Chevy Small Block Pro Series 2024 Aluminum 1.6 Ratio 7/16" Needle Bearing Roller Rocker Arms Ford Carburetor Flange Style: Spread BoreSmall Block Chevy 1. 6 Ratio Roller Rocker Arms for Improved Valvetrain Performance These 1. 6 ratio roller rocker arms are designed for Small Block Chevy applications, helping improve valve lift, reduce friction, and support more responsive engine performance. Built from 2024 aluminum, this rocker arm design balances strength, durability, and valvetrain stability for street performance, restoration, and upgraded engine builds. The needle bearing
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