By Marlan Davis Aftermarket intake manifolds like those made by Edelbrock Corp. (411 Coral Circle, El Segundo, CA 90245, 213/322-7310) are engineered to make th ...

While C&L's intake plenum isn't designed to be a dress-up item, its functional form looks more natural than the hard-edged stock plenum box. What the 4.6 GT engine needs is a good $100 bolt-on ...

Any insight into this issue? —Carl Shelton ANSWER: Leaking intake manifold gaskets are a fairly common problem on several GM V-6 and V-8 engine types built during the past two decades.