Looking for info on P4876128 intake vs. Indy. Running original MW heads and want to try a 1-4. Anyone have any comparisons? MP is cheaper, but not if it doesn't work well. THanks

Low deck or RB motor? That MP intake that you listed won't fit either so you have the wrong number. MP does have one intake that fits the RB with original max wedge heads and that is the 337. They don't have an intake that fits the low deck with max wedge heads.

The Indy intakes will fit but you'll have a mess on your hands trying to seal up the valley when using original max wedge heads.

The 337 intake is the only thing that fits and works really well in that application. It makes pretty good power from what I've seen on the dyno. My 505 makes right at 800 hp with the 337 intake and a 4500 carb on an adapter.

It is an RB. I have a crossram on it now.
http://chucker54.stores.yahoo.net/raalsiplin4c.html This was the intake I thought I needed. Do you have the complete part number? Thanks for the help.

Thanks to Andy for getting MP to reintroduce this intake. I've looked at it for several years but thought it was for Stage VI heads. MPs description really didn't give enough information to know what the application was for. Here is the PDF file for the intake from the Mopar website.

The 128 intake is for RB with Stage VI heads so it is a super wide intake manifold. For a RB block with original (or reproduction) Max Wedge heads you need the 337 intake.

As far as I know the 337 intakes are in stock. They run about $200 which is a great deal. They are a low profile intake and might just fit under a stock hood depending on what air cleaner you use.

I don't know why Mopar Performance hasn't done a little better job promoting this intake. It is the only one that fits this application and it really works pretty well. Nobody else makes a single 4bbl intake that works with the original MW heads on a stock block. (The Indy intakes would work if someone tooled up a bathtub intake manifold gasket that had MW port sizes but nobody has ever done that either)

Kind of wild that after 40 years of development there are still parts that nobody has ever tooled up.

Here is a picture of the 337 intake on a set of Indy heads. The Indy heads have raised ports which is why the intake is raised up in the air. With original MW heads the intake will sit right on the end rails and seal off the valley area.

I bought an Indy 400 manifold from Andy that I plan to make some spacers to adapt to my 440 block. The spacers will block off the notches on the 286 MW intake faces. I'm going to order one of the 337 intakes and dyno test both and see how they compare. I also bought a TM-7 that was welded up for MW ports and has a flat plate welded to the bottom to try as well. The 337 looks like the easy way to go, and from Andy's testing, looks like a good piece.

I didn't even know about the 337 intake until just a few months ago. I had a conversation with Zippy about it and he poked around a bit and discovered that MP had them in inventory but that they were suspended in the system. A couple of phone calls was all it took and they became available again.

On thing I mocked up was a combination of the 337 intake with the Edelbrock EFI fuel rails. It is a perfect match so if anyone want to run EFI on a stock type MW motor that would be the way to do it. Kind of a cool idea for a crate motor combo from MP but given the current situation I really doubt they'll be doing anything like that.

you can use the indy intake,just cut the tops off the factory valley pan (steel bathtub intake gasket) and run a paper intake gasket on top and bottom,i have done this many times,works perfect.

Here is what the MP 337 looks like on a 440 block with Edelbrock RPM heads that have been ported to the max wedge size. This makes a nice clean install with available parts.

I just purchased an Indy 440-14-3. Is the only difference between these two manifold the valley pan?

The 440-3 Indy intake is a lot taller and it is designed to fit a 4500 series carb. Plus, it doesn't have the built in valley tray so it is a completely different intake.

Thanks guys for all your input

Has anybody run the 337 with the victor heads and how are the inner intake bolt locations?

Hey mopar fever ill go out in the gagage and check mine in a little while,it '3 decrees out at the moment.oh pm me your phone number.I cant pm with this computer.Long story have to for my son in law to come home from he war.

Quote:

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I don't know why Mopar Performance hasn't done a little better job promoting this intake.

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All fixed for the '09 catalog, vague statements removed, accurate description given, etc.

There are 5 in the Warren depot, so availability is decent also.

Just archived it.

Apparently somebody wants to (or wanted to) promote that intake, it's on a display motor I saw the other night at the MP Holiday party. It's got a World block, one Victor MW head (also known as Aluminum Max Wedge in MP Marketing lingo), one regular iron MW head, and the intake raised up with spacers to show off the different head designs. Pretty cool looking, shows a couple possibilities. Maybe it'll make the rounds to a few shows this year.

So, unless I'm missing something the 337 should also bolt right up on a low deck B motor with Stage VI MW ports????

I'm a little confused, too. AFAIK, the intake we are talking about was designed for the Stage VI head to fit on an RB block so no spacers would be neccessary. Its the one used on their crate engines. This intake has been around for years and i actually always thought it was just an M1 w/an integral valley cover. Guess i never looked real close at it to see its actually differnt from an M1.

I could be wrong and someone(Zippy?) correct me if i am.