Automobile Machine Shop in Pleasant Hill, CA Allen's Automotive Machine Shop67 Monument BlvdPleasant Hill, CA, 945239257545604Automobile Machine ShopCnc Machine ShopsQuality Cylinder Heads Astro Tool & Die3330 Vincent RdPleasant Hill, CA, 945239259300368Automobile Machine ShopCnc Machine ShopsQuality Cylinder HeadsTool Die MakersTool RepairTools Show More