Re: Dual intake for thunderbolt

Posted by Joseph Earl On 2013/3/22 21:13:04

David, I think you may be on to something.

If you have noticed, the new thing for hot rodders is the dual and four pattern cams. These cams are designed to optimize valve events based on intake runner length, due to the conventional V8 intake center carb layout. These new cams compensate for the different runner lengths by phasing the opening and closing of the outermost cylinders thereby increasing both torque and horsepower across the rpm spectrum. NASCAR has been utilizing this for years.

A dual carb manifold on a straight eight should definitely help. Even better would be to have a custom grind using this four pattern technology. I would think that if we consulted Comp Cams they would be able to engineer it.

It is a much simpler solution than variable cam timing, and with less moving parts. Should be an easy mod for the Packard eight!