thanks but i don't know if buying another 307 would solve the problem. If I wanted the 307 I wouldn't have a problem fixing the issue, it just seems like a waste when I am planning on getting rid of it anyway. my car is going to be unused for a while because I am joining the army in June, so i thought it might be okay to just leave the engine alone and save up for a 350 swap or something.There's a 307 in Rolling Meadows that I can put you in touch with.
it's only 60k miles. it sat for 15 years so I'm assuming gaskets dried out. I don't know what has been done to this engine other than what I have done. I haven't noticed any oil leaks, and as far as I know the timing chain has not been replacedDo yourself a favor and just move on from the 307. 307 were very reliable in their time, but with any high mileage engine it’s like opening a can of worms. Once you open it up you’ll other parts will fail shortly there after. Has the timing chain been replaced? Any other oil leaks? And as others have said $800 is way low for head gaskets. Im guessing they aren’t checking the heads for warping, valve train for wear etc. And probably only doing the one head which isn’t a good idea.
You have nothing to lose - try a sealant !!
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