This is Brian Tooley Racing's LS3 shaft rocker kit in fully assembled form, with BTR's own 1.70 ratio full-roller rocker arms already mounted on the billet steel shaft stand system. It replaces the factory pedestal-mount rockers to reduce valvetrain deflection, and arrives ready to install as a complete set of 16. The shaft stand carries four shafts per cylinder head made from genuine 52100 bearing steel, with five fasteners securing each pair of rockers to the stand versus the factory's single bolt per rocker; BTR tested both aluminum and steel stands during development and selected steel. Fitment should be checked against aftermarket cylinder heads before assembly.
- Part Number: BTRSRKR3KITASMBTR
- Application: GM LS3
- Configuration: Assembled (BTR rocker arms installed on shaft stand)
- Rocker Style: Shaft mount, full roller
- Rocker Ratio: 1.70:1
- Shaft Material: 52100 bearing steel
- Material: Steel
- Quantity: Set of 16
FAQ
Does this kit come with the rocker arms already installed?
Yes. This is the assembled version of the LS3 shaft rocker kit, with BTR's 1.70 ratio full-roller rocker arms already mounted on the shaft stand system.
What rocker ratio do these rocker arms use?
They use a 1.70:1 ratio.
Is an unassembled version available without rocker arms?
Yes. Brian Tooley Racing also offers this shaft rocker kit unassembled, without rocker arms included, for builders who want to supply their own.
How is this shaft rocker system mounted compared to factory pedestal rockers?
Each pair of rockers is secured to the shaft stand with five fasteners, versus the factory's single bolt per rocker, and the stand carries four shafts made from 52100 bearing steel per cylinder head, reducing valvetrain deflection versus stock pedestal mounting.
