This is a bare Brian Tooley Racing pedestal-mount rocker arm, sold individually, built for the intake side of GM LS3 engines. It uses a 1.70 ratio and is intended for builders sourcing individual rocker arms rather than a complete set. BTR's FEA analysis shows the design is 46% stronger than stock Chevrolet rocker arms, with an extended tip design that supports higher valve lift and improved tip durability, and a superior moment of inertia compared to roller-tip rockers at max RPM. Factory Chevrolet rocker trunnions will not work with this rocker arm; it requires a BTR trunnion kit.
- Part Number: RKR-LS-1.7I-R1
- Application: GM LS3 (intake)
- Rocker Ratio: 1.70:1
- Mount Style: Pedestal
- Material: Steel
- Strength: 46% stronger than stock Chevrolet rockers per BTR FEA analysis
- Trunnion Compatibility: Requires a BTR trunnion kit; factory Chevrolet trunnions will not work
- Sold: Each (bare rocker arm, no trunnion kit included)
FAQ
What engine and side does this rocker arm fit?
It is designed for the intake side of GM LS3 engines.
Does this rocker arm come with a trunnion kit installed?
No. This is a bare rocker arm sold individually without a trunnion kit installed, and it requires a BTR trunnion kit; factory Chevrolet rocker trunnions will not work with it.
What rocker ratio is this?
It is a 1.70:1 ratio pedestal-mount rocker arm.
How much stronger is this rocker arm than a stock Chevrolet rocker?
Per BTR's FEA analysis, it is 46% stronger than a stock Chevrolet rocker arm, with an extended tip design for improved valve-tip durability.
