318 & 3.23 axle. Requires careful consideration in cam selection, because a poor choice could render performance to canine status. Someone mentioned 10-11" of vac for the W cam. I presume a lot of that comes from the extra exh duration, which gives the engine the raspy exh sound [ hey, girls look at me! ], but kills low end tq. The last thing you would want to do with a small engine such as 318 & 3.23 gears is kill what little low end it has.
A much better cam in my opinion would be the Isky 264 Mega cam. It is a single pattern [ same duration, int & exh ], will have a 'noticable' idle, with broad off idle power range in a 318.
