You'll need new cams to make power up there. And you may need new valve springs to operate above 9000rpm likewise. davew7 wrote:That you are suitable to the assumptions. Understand that the collector needs to be [[ open at the top,]] for the correct wave to return again to The https://deanimkew.aioblogs.com/86327937/toyota-4age-engine-for-sale-for-dummies