Up for sale is a professionallyrebuilt pair of Small Block Chevy cylinder heads. Casting number is 462624. Theheads are dated A238 & D119(January 23, 1978 & April 11, 1979). Headshave 76cc combustion chambers with 1.94 intake and 1.50 exhaust valves. The #624 is one of the best open chamber heads of the late 1970’s & early 1980’s.These heads have the 7 hole exhaust bolt holes so they will work with anyexhaust manifold. Heads have been hot tanked, shot blasted, and magnafluxed. Theseheads have been completely rebuilt with 16 new thick wall valve guides, 8 newhard exhaust seats, a 3 angle valve job, 8 new intake valves, 8 new exhaustvalves, and 16 new heavy duty valve springs good for up to .500” valve lift.The heads have also been resurfaced .005 for a perfect head gasket seal. Theheads are then thoroughly washed and fully assembled with 16 new premium metalclad Viton valve stem seals, 16 new OEM “O” ring seals, and 32 new heavy dutykeepers. These heads have never had any porting or polishing work done to them.All valves and valve seats have been checked for a perfect compression seal.All threaded bolt holes are good. These heads are ready to install. The headspictured are the actual heads you will receive. These heads were factoryinstalled on many GM & Chevrolet vehicles including Corvette, Camaro RS SS& Z-28, Chevelle Malibu, Chevy II Nova, Bel Air, Impala, and Chevy &GMC trucks. These heads will interchange with casting number 487, 487X, 493,993, 993X, 882, 441, 441X, 624 and many others. These heads will alsointerchange with camel hump heads with casting numbers 370, 461, 461X, 462,291, 292, 186, 041, & 492. If you use these heads in place of a camel humphead it will lower the compression due to these have a larger combustionchamber. These heads will fit all 265, 283, 302, 305, 307, 327, 350, & 400small block Chevy engines from 1955 to 1986 with no modifications (steam holeswill need to be drilled for a 400) and 1987-1999 with correct gen 1 intakemanifold (except 1992 & up LT-1 reverse flow). I tried to list everythingabout these heads but please ask any/all questions before buying. Payment mustbe received within 3 days or item will be re-listed unless other arraignmentshave been made in advance. Shipping, handling, & insurance is fixed at $90.00for both heads shipped to the continental US only. Alaska, Hawaii, andeverywhere else will be higher. All international buyers please multiply theshipping calculator by 2 for two boxes. If you are outside the continental US& purchase the heads please do not pay until an adjusted invoice is sent toyou with the added shipping costs. Thanks for looking.