I've got a mystery for you all to help me solve.
In the midst of restoration I removed the exhaust manifolds from my 1972 (with a turbo hydramatic 400 and AC). (Though the AC is not functioning and the compressor has been removed.)
I had the manifolds ceramic coated because my attempt to do a Por-15 job didn't work very well. There were several places where the Por-15 manifold paint flaked off. Probably because the manifolds were horribly corroded and oxidized so the paint just never would bond to the manifolds. After days of wire brushing and washing dust out of my sinuses I took them in to be sand blasted. While at the shop I decided to save myself some grief this time and spend some money and have them ceramic coated. They look great.
However, I decided to take a closer look at the casting numbers. 3747038. That number is off of a 1965 Corvette as near as I can tell. Also, they are both coded RH... right hand.
Now I'm puzzled. Why would one remove the manifolds from a 72 and replace them with those of a 65? And why two right hand manifolds? Is there any performance gain? Is it pure laziness? Is it a mistake? The engine is original because the engine vin matches the vin on the window post. So I don't have a 1965 engine.
But... why... dang... I'm scratching my head over this one.
|UPDATED|10/18/2013 2:32:33 PM (AZT)|/UPDATED|
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