Advice on camshaft for a 318, please.

To make a accurate recommendation....I would like to know your estimated Compression Ratio, and how much RPM you want to turn.

If you just want to get some pickup over the OEM Cam....go with the Comp Cams Hydraulic Flat Tappet XE262H

If you want some performance, and some lope, get the XE268H
http://www.compperformancegroupstor...Product_Code=20-223-3&Category_Code=LACAMHFXE

Do you happen to know which cylinder heads your 318 has?

Good luck