We developed a backing plate that completely mounts up to your Silvertop and Blacktop 4AG and lets the... This is an easy but intelligent means of facilitating additional oil to circulation amongst each cam lobes and bucket, this lowers dress in and friction. For specific 4age camshaft timings: Bill’s Stock https://toyota-4age-engine-for-sa03912.articlesblogger.com/62093793/a-review-of-4age-blacktop-for-sale