Need a Max Wedge Intake for my 500" motor making 690HP on the dyno.

The intake on there is the Indy 440-2B Dual Plane that has been ported. My engine builder seemed to think that I had 50HP I left on the table not going to an Indy Single Plane. I can't use the Single Plane since I want everything to fit under a stock hood.

Now, there is a new option....the Modman intake. Does anyone know the height differences from the dual plane? Does anyone think I will realize an improvement over the dual plane?

Motor is 505" with a smaller roller cam, ported 440-1's, pump gas. Carb right now is a single 850. Mainly for the street/occasional strip.

Interested in people's ideas and thoughts.

Here is the flow sheet on my ported indy dual plane.
In the December 2005 issue of Mopar Muscle Steve Dulich tested a ported indy dual plane and a indy single plane on a 440 that had indy CNC ported SR heads and a solid roller cam, the single plane made 15 more HP.
I do not think the Moddman intake would be an inprovement over your DP indy.

The Modman intake has very short runners and just does not look to be a very good design for making power.
As stated,a ported Indy dual plane can make decent power.
Keith

The modman manifold almost seems to be a gimmick ... it has interchangeable tops so that different carb combinations can be run using the same manifold base but changing the carb mounting plate. Kind of like being "a jack of all trades but a master of none" !!

Consider what the difference of the two manifolds is ... the dual plane will give you more bottom end torque while the single will give you more top end horsepower. On the street, which do you really need ??? A ton of bottom end grunt will let you run less gear - which in turn is more highway friendly.

Funny as I am using the Indy dual plane intake on my 63. My 493 is 10.6 comp and runs on 92 pump as its a street car. I use Indy EZ heads and make right about 600 hp. I am very pleased with it for the street driving as the driveability is great. It has let me hit 10.70's at 3700 lbs so far and that is using an 850 DP also. I feel with some tuning it has more in it. Dont know if I would go much faster with a single plane and I also have a problem with hood clearence. One of the guys on here told me that the MP 337 single plane intake should fit under my hood as its no taller then the Indy dual plane and I here the MP 337 SP intake makes good power. He also said I could use his Dominator carb with the 337 intake to see how my 63 likes it. I hope to take him up on it this year. I wanted to try the Victor or Indy single plane but they are to tall for my hood. And from what I hear the 337 intake is just as good or very close in performance to the Indy SP and Victor intakes. Ron

Use the Mopar 337 intake.

IMO, I believe that if you are at an honest 690 hp, you are probably leaving some hp on the table with the 440-2D. I have no data, so take it for what it is worth.

I believe that Firefighter did some 337 and 2D dyno testing in your hp range. Maybe do a search.

the only practical use i can see for the indy mod manifold is to put a blower on top of it.

thanks for the information! This 337 is news to me. I'll look into it, it's gotta be max wedge size ports. Will do some reading.

Those #'s were on a dyno that had the reputation of being 'realistic'.

I will look into that intake as well.

just found this stellar, related post

https://board.moparts.org/ubbthreads/show...e=0#Post5622009

Firefighter, next time I'm in and around Ontario I'm going to have to come visit your car and take a look in person

The 337 should be the perfect intake for you. It will make more power than the Indy DP, it will have better fuel distribution and it will fit under the hood. All good things.

Pick up a copy of my big block book for pictures of the 337 intake. It can be a little hard to find the 337, you'll probably have to order it from your local Dodge dealer. Or try Mancini Racing. They might have it on hand.

Isn't this the new PN for the 337????


http://www.summitracing.com/parts/dcc-4876128

and this the dommy flange version
http://www.summitracing.com/search?keyword=P4876129&dds=1

Hi, I'm using 440-1's....is that going to mean anything different in how I'd set this up since it has the raised intake ports? I read a lot about the Super Victor and filling the valley. Wondering what I'd have to do to make this intake work.

I can't find the exact height anywhere either....I'm curious how much height difference I'm going to have compared to the dual plane.

I imagine with the single plane I could also give the motor the tiny shot of nitrous I was refraining from doing the dual plane too

in my 700 hp 500" motors, the 337 was worth about 25 hp. it outperformed the indy dualplane in torque and horsepower above 3500. below that the indy dualplane was the best performing. it was about 80 ftlbs higher in torque, until 3500.

i use three of the 337,s. they will fit under the stock hood. they also take alot of port matching to match the max wedge ports. i kept the dualplane on one of my 500" motors. it is in a heavy 68 charger that is 100% street driven. i like the extra torque down low. i think the indy dualplane is the best one made...

your pump gas motor is making alot of power . for all of mine to make 700 hp, they needed 13.1 cr and a solid roller 272/276 @.050"-650", carb 1000cfm........

No, those intakes you linked to won't fit this guy's motor.

You don't have to do anything to make it work. Bolt it on and go. I've made over 800 hp with that 337 intake right out of the box.

You already have a valley cover don't you? If so, then you are ready to go.

If you read this thread you'll find some pictures and dyno results from my 514 dyno mule.

https://board.moparts.org/ubbthreads/show...part=1&vc=1

Yep, it takes time and costs money!

I usually sell the parts after I finish testing them on the dyno. If I port match them then they are worth less. Plus, it costs me time or money to port them. So I end up double worse off.

If I bolt the parts on right out of the box then I can usually sell them for a decent price. Also, when I test parts right out of the box the numbers mean more to guys reading the books or the magazine.

Of course, the reason why I do things might not apply to most people. In your case it would make sense to port match the intake.

Thanks everyone!

yeah, motor makes good power. Chuck and the guys at Best Machine built it back in '05. This 339 intake wasn't available back then. I remember Chuck telling me the intake is what prevented him from setting the timing to make optimal power, so he figured I would be better off with a single plane and a dominator.

Sounds like with this 339 I'll be at least able to go single plane, but prolly won't have room for the dominator still.