YOU ARE BIDDING ON A NICE SET OF ALUMINUM CNC PORTED GM R07 ALUMINUM CYLINDER HEADS FROM HENDRICK MOTORSPORTS. THESE ARE THE CURRENT R07 HEADS THAT THE NASCAR TEAMS ARE RUNNING AND ARE THE CURRENT R07.2 VERSION. CASTING #17802715 AND ARE A SERIAL # MATCHED SET "09-A H44990 111753 X026". THE INTAKE PORTS MEASURE 1.950" WIDE x 1.950" TALL. THE GUIDES ARE BRONZE, 6mm ON THE INTAKE AND 7mm ON THE EXHAUST, VALVE SEATS ARE BERRILIUM COPPER AND THE HEADS INCLUDE ALL THE VALVE COVER STUDS & BUILT IN O-RING FOR THE VALVE COVER TO SEAL AND ROCKER STAND STUDS. FULLY ASSEMBLED FROM HENDRICK WITH 2.200" x 6mm COATED INTAKE VALVES AND 1.615" x 7mm COATED EXHAUST VALVES, PSI POLISHED 1.375" od VALVE SPRINGS, VALVE SPRING SEATS, VALVE SEALS, DEL WEST RETAINERS AND TITANIUM VALVE LOCKS. GREAT SHAPE WITH NO DAMAGE AND NO BLOW UPS. ABOVE WHERE THE SPARK PLUG GOES THERE IS A SMALL THREADED PORT WITH A VERY SMALL THREADED HOLE DOWN TO EACH INTAKE RUNNER TO GET DATA READINGS WHILE THEY ARE BEING TUNED ON THE DYNO, YOU CAN JUST FILL THEM WITH HIGH TEMP SILICONE / EPOXY TO PLUG THEM OR INSERT A SMALL BOLT / PLUG OR WELD THEM SHUT AND BUFF OFF THE WELD. THERE IS ALSO A SMALL SENSOR PORT THAT GOES BELOW THE SPARK PLUG IN THE COMBUSTION CHAMBER THAT CAN ALSO BE PLUGGED OR WELDED OVER. THE SMALL THREADED HOLE IS SHOWN IN THE PICTURE DOWN IN THE INTAKE RUNNER AND BELOW THE SPARK PLUG THREADS IN THE CHAMBER. THE NASCAR GUYS JUST RUN THE PLUG INTO THE HOLE WHEN THEY USE THESE ON THE RACE ENGINE, BUT WE DIDN'T GET THE SMALL PLUGS WITH THIS SET. IF YOU ARE UNFAMILIAR WITH THE GM R07 ENGINE, ITS THE FIRST ENGINE THAT GM HAS DEVELOPED FOR STRICTLY RACING PURPOSES ONLY AND WAS DESIGNED TO REPLACE THE COMMON SMALL BLOCK CHEVY DESIGN THAT HAS BEEN IN EXISTANCE SINCE THE EARLY 1960'S. THE R07 FEATURES A 4.500" BORE SPACING WHICH IS AN UPGRADE FROM THE STOCK SBC SPACING AND FEATURES A RAISED CAMSHAFT ON THE BLOCK. THESE PARTS ARE JUST BEGINNING TO HIT THE MARKET AND NOW IS THE TIME TO STOCK UP BEFORE THE BLOCKS HIT THE MARKET AND PRICES SKYROCKET. THESE HEADS WILL ONLY WORK ON THE GM R07 ENGINE BLOCK AND WILL NOT FIT ONTO STOCK SBC PRODUCTION BLOCKS. THESE HEADS WILL ONLY WORK ON THE GM R07 ENGINE BLOCK AND WILL NOT FIT ONTO STOCK SBC PRODUCTION BLOCKS. NEW COST ON THESE HEADS WITH ALL THE CNC PORT AND HAND FINISH WORK IS WELL OVER $10,000 AND ADD $4,000 FOR THE VALVES, SPRINGS, RETAINERS, LOCKS ETC ETC AND YOU WOULD HAVE TO SPEND $14,000 TO DUPLICATE THEM! GREAT SET OF HEADS THAT WILL MAKE AWESOME HORSEPOWER FROM THE TOP LEVEL TEAM OF HENDRICK MOTORSPORTS! 

ATTN INTERNATIONAL BIDDERS. THE PRICE SHOWN IN THE SHIPPING CALCULATOR TO YOUR INTERNATIONAL LOCATION IS FOR 1 PACKAGE. THESE HEADS HAVE TO SHIP IN 2 BOXES DUE TO SIZE AND WEIGHT RESTRICTIONS. IF YOU ARE AN INTERNATIONAL BIDDER THE SHIPPING STATED WHEN YOU PLACE YOU BID WILL BE DOUBLED WHEN WE SEND THE INVOICE. THIS IS FOR INTERNATIONAL BIDDERS ONLY. USA LOWER 48 STATES SHIPPING IS FIXED AT A TOTAL COST OF $69.95 TOTAL COST.

INTERNATIONAL, HAWAII, ALASKA & PUERTO RICO SHIPPING EXTRA