ok we just put my friends car (95auto) together we used a 99 explorer motor with its intakes he put a mild cam in it that was degreed in professionally, it apears to be weak and not running very well we have played with timing but seeing the harmonic balancer apears to have no markings on it besides one line in it that doesnt show under a timing light. also whats a good way to check for vacuum leaks. and the sucker is running real ruff not just from the cam and has a really weak low end also just dies at times and has a back fire thats random and doesnt happen often