Product Description
Brian Tooley Racing BTR LS Rocker Arm Trunnion Kit - 4.8 5.3 5.7 6.0 6.2 LS1 LS3 LQ4 LM7 LM4 Trunnion Set
Fits: LS1 LS2 LS3 LS6 L99 LS4 L99 LQ4 LQ9 L76 L92 LR4 LM7 L59 LM4 L33 L98 L77 LY6 LFA LZ1 LY2 L20 LMF LH6 LY5 LMG LC9 LH8 LS4 4.8 5.3 5.7 6.0 6.2
These LS Series retrofit trunnion kits are designed to convert stock LS Series rocker arms into captured roller bearing rocker arms. The factory bearings are a known failure on the LS Engines. When they fail, they send small bearings through the entire engine. The upgraded trunnions use a captured roller bearing allowing for a reliable smooth rotation. The upgraded trunnions also give more stability at higher RPM. We use these trunnion kits in anything from stock 4.8's all the way up to 1,000+hp turbo motors.
The stock factory LS rocker arms are very strong and very light. Once you upgrade the bearings and trunnions the rocker arms handle similar to very expensive roller rocker arms (at a fraction of the cost). These are a must have for anyone installing an aftermarket Cam, Supercharger, Turbo or Nitrous.
OEM bolts can be reused with this trunnion kit, or choose to upgrade your bolts to one of the following:
- Michigan Motorsports Allen Head Bolts
- Brian Tooley 12pt heads
- ARP 234-7207 Rocker Arm Stud Kit
