Bronze Bushing Trunnion Upgrade. Summit Racing LS Series retrofit trunnion kits are the answer for LS engines with higher lift camshafts and heavier-than-stock valve springs. These trunnion bushing kits are designed to maximize peace of mind by completely eliminating the needle bearings and providing maximum lubrication to the trunnionâwhile also providing maximum load carrying capabilities many times greater than needle bearings.
Rocker arm trunnion upgrade kits include:
* 16 micro polished hardened steel pivots/trunnions
* 32 high performance C932 bearing bronze bushings
* 32 retainer clips
