did 3418815 heads
68-69 casting ending with 894 are 202 valves usually X on the heads. 70-71 casting ending with 915 are 202 valves Can be J, U, O, Z. The U's are usually cut off by the spark plug making them look like a backwards J, 1972 casting ending with 915 are 188 valves usually J,U,.
If the heads need to be redone, Valve guides, Seats, Valves, resurfacing, Springs, pressure tested. the cost can get up to the same as new heads.
Beware of old heads you never know what you are buying until you take them to a Machine shop. $300 max for a clean unrusted set with the springs off to check the valve guides to make sure they can at least be lines without new guides being installed. Remember these heads are 50 years old. I can use old heads them because my son does them for free for me. Customers usually opt for new heads due to the cost of labor and parts for reconditioning the old heads. Unless your building a original car and its what you want.
We get several heads in the shop that were said to be good and ended up being junk.
68-69 casting ending with 894 are 202 valves usually X on the heads. 70-71 casting ending with 915 are 202 valves Can be J, U, O, Z. The U's are usually cut off by the spark plug making them look like a backwards J, 1972 casting ending with 915 are 188 valves usually J,U,.
If the heads need to be redone, Valve guides, Seats, Valves, resurfacing, Springs, pressure tested. the cost can get up to the same as new heads.
Beware of old heads you never know what you are buying until you take them to a Machine shop. $300 max for a clean unrusted set with the springs off to check the valve guides to make sure they can at least be lines without new guides being installed. Remember these heads are 50 years old. I can use old heads them because my son does them for free for me. Customers usually opt for new heads due to the cost of labor and parts for reconditioning the old heads. Unless your building a original car and its what you want.
We get several heads in the shop that were said to be good and ended up being junk.