Irrespective of Some others assert of the 20HP or more enhance- on modified heads on your own, this is simply impossible devoid of camshaft or pistons improved. Toyota has casted and machined all their four valve heads to pretty near and correct tolerances for Avenue (and rally) use. There are https://emilianonvdom.blogscribble.com/26812751/5-tips-about-4a-ge-engine-for-sale-you-can-use-today