I have a 74, it has a 200 in. six. Wondering If anyone knows offhand what size the heater hose and vacuum lines are as I’d like to replace them. I’ll probably just cut a section off and match it up, but if anybody knew off the top of their head it would be helpful.
Heater hoses should be 5/8", vac will vary depending on usage. Unless that PCV hose has a definite problem, leave it alone. Preformed hoses are specific to application and mostly discontinued.