This is acompletely and professionallyrebuilt427 425 HP engine correct for any 1969 Camaro COPO or Yenko built from February through June. 4 Bolt main block casting number 3963512 and dated A 30 9. We have documented thatCOPO Camaros commonly useda January dated blockright throughMay of 1969.This block also has matching 3919840 heads with roller rockers, stock GM blueprintsolid lifter camshaft, forged .030 over11:1 pistons, correct 3933163 aluminum intake manifold,Holley 4346 carburetor, 1100837 alternator and deep groove pulleys. The engine is ready to adjust lifters and install in your car. The pad on this block is clean, no stamping,and the broachmarks are visible. Wehave includeda pictureof the engine pad. This engine was being prepared to install in a customers1969 Camarowho unfortunately was never able to complete the project. Check out our othersales for more hard to find NOS, new and used parts for 1964-1981GMChevrolet Camaro, Chevelle, Nova, Corvetteand Pontiac Trans am, Firebird and GTO Models. offer with confidence, Camaro Specialties has been serving the restoration industry for over 30years. Feel free to call us with any questions you may have regarding this engine. Phone [phone removed by ]. We will ship anywhere.We welcome and encourage local inspection and pick up at our shop whenever feasible.