Just bought a newly rebuilt LA 318 and asking about this cam that was in it?

So I went and out and bought a 85 LA 318 with 302 heads on it. It has been rebuilt recently. Probably never even saw a second oil change it's that clean. Now two of the pistons have been kissed both on the exhaust side of valves. One on piston 7 and the other piston 4. Now everything looks stock in the car except the cam and lifters and I'm confused on where it came from it has 1828 stamped on the backside but Hughes says it's not there's. The front of the cam shows 1138. Does anyone know who does this cam?

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