heres the story, we have a 93 ls with the b18a1 block. the timing belt was streched and all of the valves came out at the same time and clipped eachother. so my friend decided to get another head. we bought two, a p75-2, and a pr4-5. now for some reason the second exhaust valve is sticking open. the question is are all of the valves on ls heads the same length. the original head was a pr4-1, and the p75-2 is what we are using on the block. also there is a black film that is in the pr4-5 head and we think that it is either been blown or just didnt have the oil changed in like 20k miles. thats why were not using the pr4-5 head. but, if it was blown, could the valve sesals be ok? or would you recommend not using the head at all........

thanx


Modified by nohondayet at 2:27 PM 10/2/2004