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Thanks! Well before the biggest concern was my oil leak, but given what happened when I was driving yesterday, that's taken top priority now.
The problem:
This all started happening after I gave a good run through all the gears up to about 70mph entering the freeway yesterday. I didn't feel anything abnormal until I i went to accelerate at about 70mph. When I pressed the gas, I heard a loud clack that I knew wasn't normal. I kept it at low rpm all the way home....which luckily was an exit away. Engine was sputtering as I pulled in to the garage. Since then, when I'm in neutral at idle I hear and feel a big clunk from the drive train once every 20 seconds or so. The engine sputters for a second very slightly when this event occurs but the car never dies. This same event also now happens when I'm driving at very low rpm in the same frequency is does at idle. Haven't driven it more than around the block since for fear of further damaging something.
Background:
I just bought this car a week ago, and the prior owner put maybe 500 miles on the car since 2012. The prior owner to him is the one that did the restoration. Turns out my car started as a '62 50th anniversary non SS car with a 327 and auto trans. When the restoration was done, they dumped the 409 and the t10 in. After doing some homework on the engine stamps and codes, I found the 409 to be a crate replacement motor (truck). Not sure exactly what they did to the internals, but they definitely upgraded the truck block with all the 409/409 bits that I can visibly see. Prior owner says he's sure it has the 409/409 cam in it but who knows what else they did. I know for sure the engine and trans combo has less than 2500 miles on it. I have noticed that the transmission leaks a bit...but nothing to be alarmed at. I'm embarrassed to say, but I can't find the transmission oil stick to check levels. Also, gonna start by replacing all the plugs, hoses, and fluids. I was told putting some additives (lead and zinc) are recommended as well, but need more details.
Anything yall can help with would be appreciated!