Building an intake question

[BigNorm]

I'm interested in building my own intake. I currently have a carb'd 2.8L in my Jeep Cherokee. I'd like to buy an entire 3.4L RWD shortblock with 2000+ heads. The problem being is that there is no manifold available to run a carb. Is there anywhere I could buy intake flanges for? Could I make a custom valley pan to keep the oil in? Any info on this would be greatly apreciated. I'm gathering info on this build as I go. Any information you could provide would be greatly appreciated.

[SappySE107]

RE: Building an intake question

I would imagine it would be easier to take the stock gen 3 lower intake and cut out the parts you don't need and then weld your own tubing to a carb plate. That would keep the flange and valley portion sealed and save you some expense at the same time. That is how I would go about it anyway.

[geoffinbc]

Agreed. However getting equal fuel flow to each runner may be a task since they are all seperated far apart.

If I had heads I could make a flange no sweat. I could also bend you a valley pan aswell. But I need a block with heads on it.

Or if someone has a CAD drawing I can cut flanges in no time. But I doubt anyone has a drawing for it.

[BigNorm]

How about multiple small carbs?

[Guest]

you can always buy a 6 ITB intake from Ryan falconer for $1500 for the aluminum heads

[SappySE107]

Wouldn't that involve converting to EFI though? Motorcycle carbs perhaps? Would probably give you more even fueling though isn't the stock carb setup a 390 CFM? Im pretty stupid when it comes to carbs:P

[Guest]

Good luck with those flanges....

They'll need to be CNCed, from a 1 or 1.25" (I don't remember what I came up with) thick piece of material, and machined out to provide clearance for the rockers and pushrods, and still provide a sealing surface for the valve covers. Definatly not like building a SBC intake starting with flat flanges.

[sharkey]

why not just convert to EFI??? it can be a bit of a task, but nothing near building an intake manifold. aside from the dificulty, there are the added benifits of an efi system.

[Guest]

why not just convert to EFI??? it can be a bit of a task, but nothing near building an intake manifold. aside from the dificulty, there are the added benifits of an efi system.

QFT!

[geoffinbc]

Agreed. Every time my dune buggy chokes out off camber or under hard braking I want to get out and smash the god damn carb with a hammer...

As soon as I find an EFI donor it is in.