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putting my 1957 270 hp motor back together how much overspray (location) should be put on the exhaust manifold and the bolts and french locks?Also how much overspray if any should go on the alum. intake manifold and bolts.
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Re: c-1 engine overspray
There's no 'right' answer to your question... Human factors varied engine paint consistency from unit to unit on the assy line at Flint and there was VERY little time for painters to shoot individual engines. Just try to imagine the process and 'duplicate' it accordingly...
The engine came down the paint line with exhaust manifolds installed. The painter had to shoot the front, rear, side and bottom of the engine as it passed by. Ask yourself things like this: If you've got 'perfectly' uniform paint coverage on the engine surface behind and around the exhaust manifold and you want to paint the manifold itself, how did the painter get full coverage on the engine above, below and adjacent to the manifold without getting equivalent paint coverage on the exhaust? That's the path judges who view your restoration will be going down...
On the intake, that's another story since you've got a high horse car with cast aluminum intake. There WAS a masking process (albeit imperfect) to keep the aluminum natural and the process changed over the years (time/motion, cost reduction). Read your copy of the Judging Guide to see what it says about the parting line(s) between Chevy orange and the aluminum intake to 'reverse engineer' a correct looking job. Pay special attention to what the JG tells you about detail areas surrounding the intake (in the 'valley' area between the intake and the cylinder head(s), at the front of the intake where the water pump mounts, Etc.).
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