We paid Joe Mondello $700 (including shipping) to port, polish, flow test, install screw-in studs and set up the "291" heads for the 30-30 camshaft. We purchased a pair of new "3917291" heads from a Chevrolet dealership for about $200 and shipped them to Mondello. I also furnished Crane "green-stripe" dual valve springs which were popular at the time.The labor and cost for those parts was in 1967 dollars.
I purchased a 375 HP, 327 CI short block from a local Chevrolet dealership for about $400. It came fitted with forged "pop-up" 11.25:1 pistons and a forged crankshaft. The Chevrolet dealership helped a lot with our racing because they were performance oriented. In 1968, they received one of the sixty nine 1969 Camaros COPO with a ZL-1, 427 all aluminum engine. It was #6 COPO 1969 427 Camaro and was eventually sold to Jim Hall in Odessa Texas. He pulled the ZL-1 427 engine and used it in his Chaparral SCCA race car in 1970 and the Camaro body was sold locally without an engine. .