heres what the inside of the stock uim looks like.
its got a tiny plenum,a step in the roof right before the port entrances,and a huge dip in the roof dead smack in the middle.
the pics happened to be off a 3.1 manifold

 

I guess the upside is that the entrances to thte runners are "radiused." LOL

 

looks about right. I cut the bottom center out of one.

The design really "sucks"

 

obviously not the ideal intake design for maximum power output. Thats why you should buy Dave's manifold, or make one yourself.

 

Engineers are not to be blamed for that design, but rather credited for it- its cheap and effective, it may not produce the most power, but they don't design for the most power, they design to be cheap and effective. Blame the criteria set by public demand and government regulations for the lack of high performance factory engines.

It is nice to see a cutaway though.

 

good point. I guess I should be complaining to the EPA (and supporters) and all the people that don't want every car to be a race car like I do, whether that be right or wrong.

That cutaway does support the idea of an aftermarket upper-intake for those who want maximum performance out of this existing engine.

 

Then I would suggest you design and build a car that is safe, fast, and economical all at the same time.

The thing is that that manifold got a V6 car back and forth to work, the store, and various other places for damn near 20 years. It wasn't designed to be a performance design in the first place, just something that was fun drive on a daily basis for about 40% of the people who bought camaros.

Not trying to start a war here, but I'm just tired of people who come on here, bitch about how the government is holding them back from their "right" to a fast car, but don't have the ***** or will to actually do something about it.

I, personally am glad that the EPA exists and makes rules that make cars cleaner and more fuel efficient, that's why I can go out and buy a 505hp Corvette and tear up the road, all while making sure that I'll be able to breathe in 10 years.

<steps off soap box> Sorry for the hijack, but I feel better now.

Now, I applaude Dave for designing and building his intake, but it's a far cry from perfect, I'm sure even he'll admit that.

 

yup ur right,theres alot more improvement could be made,but it would sacrifice the bolt on aspect of it.the manifold i made is geared heavily twards forced induction,and high rpm power in n/a engines