402 Big-Block Rebuild, Part 4 - 1967 Chevrolet Chevelle SS Photo Gallery
9. With our measurements set, Jason uses a valvespring compressor to compress the spring so the locks can be installed. Our valvesprings have a max lift of .794 inches, well below the .550-/.570-inch lift of our cam. This means we won't be anywhere near coil bind. Running a spring constantly near coil bind can overstress the spring and cause it to fail prematurely.