Andy, I know you said that the carb. you got is one of the new Ultra Dominators but you might wnat to look at(if it has them)the power valve fuel holes in the metering block. I bought a 8896-1 several years ago and it had humongous PVRC in the metering plates, to big to be able to jet the carb down enough to get a good AFR reading at WOT with out making the motor detaonate at part throttle. The Carb. Shop was next door to the dyno shop and they fix the metering plates so we could still run the front power valve and block the rear one off, that made the jetting a lot easier to tune.

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The LM1 is one of the greatest tuning tools ever. One of my next projects is to use the LM1 on my car and see if I can actually dial in a Holley Dominator so that it works on the street. I'm not sure if I can get it to a point where it drives super nice but I figured it would be a fun thing to mess with.

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Andy, and this is what impressed me most about 1FastMopar's car during Drag Week! i asked the questions but Eddie wouldn't answer. i saw some things that were very interesting

we all know that a dominator will make the numbers, the multi carb setups are for those that want to be different

Andy, going from the oe maxwedge to the indy intake,
what metering jets and metering rods did you use on your oe max wedge intake
and what metering jets and metering rods on the indy 440-25 intake.
my oe crossram uses 113 primarys
110 secondaries
need some recommendations on jetting the indy intake

The carbs are the #1812 Edelbrock 800 cfm AVS units. We had them box stock on the MP cross ram. 113 jets, 68/47 rods and 101 jets. On the cross ram they were a little rich, AF was 11.9 during the pulls. But we didn't lean it out since a couple of cylinders were up in the 1350 temp range while others were down around 1100 degrees. So it needed to be tweaked but we didn't want to spend the time dialing it in.

On the Indy x box the carbs were way lean. We jetted it up to 104 on the secondaries but it was still lean. It could've gone 107 or maybe even 110. There was still some cylinder to cylinder variation but not as much.

The Indy manifold doesn't come with any gaskets anywhere so my guess is that it is full of vacuum leaks. We tried to seal it up with RTV which is okay for some dyno pulls but that wouldn't last long on a real engine. That manifold really needs to be redesigned so that it has o-rings seals internally and on the tops. Some good viton covered washers under the intake to head bolts would also be a good idea. That way you won't have gas leaking down in to the oil pan.

Not at all suprised you got more HP out of the new Indy inline Xram than the one patterned after the old original Max Xram, I can run right at 2 tenths quicker with a Dominator and Indy single plane than with the Xram, normally on the Xram you need to richen up the throttle sides of the carbs a bit to get a more equal distribution. The old Crossrams aren't the fastest, but the look can't be beat.

I GOT .4-.5 OUT OF THE BOX ON MY INDY 440-25 INTAKE COMPARED TO MY ORIGINAL MAX WEDGE CROSSRAM.
I WENT FROM 10.70 TO 10.30 RIGHT OUT OF THE BOX AND THEN JETTED AND GOT ANOTHER TENTH OUT OF IT. YOU NEED SOME BIG METERING JETS FOR THIS INDY INTAKE.
I THINK IT IS ONE UGLY PIECE BUT IT WORKS FOR SURE.
SO YOU NEED TO KNOW: "WOULD YOU RATHER LOOK GOOD OR RUN GOOD" THAT IS THE QUESTION?

how tall is the indy crossram?

how much do they go for?

i know they go for $1250.00 retail but call FAST68PLYMOUTH, i think He has a real good price on them

If you pick up 75 hp like we did on this motor then you should easily pick up a couple of tenths if not more. It will depend on how much power capability the motor has. This was a flat tappet motor that were shutting off around 6500 rpm. If it was a roller motor that was turning 7500 rpm I bet the HP difference would have been even greater.

Switching from the cross ram to the X box will add some power but you'll probably need to change gears and maybe upgrade the valvetrain to take advantage of the new power.

I'd think the 750 carbs would work fine on the X box. I ran 800's since that is what I had but I can't see why the 750's wouldn't work just as well.

The biggest problem is getting the tune up correct. It is kind of a pain to deal with twin Eddy carbs! It is a lot of little clips, levers, springs, rods, etc everytime you pull the tops. I can see where a guy would get tired of twisting screws if you had to do a bunch of trial and error to get the cross jetting correct. At some point I'd put studs in the top of the Eddy carbs just to keep from stripping out those screws.

Ari - here is the throttle bracket that I designed for this setup. I talked to Indy about supplying it to them so if that deal works out then people will be able to buy a turn key setup from them.

Numbers? results? wha-da-we got?

Andy, just send me both of the intake set ups you tried with the carbs and I'll stick em on mine and do some REAL track testing and they can be compared to my oe x ram

Is your car ready for another 80 hp!

I see that Indy sells a six pack lid for this intake. Anyone try that baby yet? Maybe I need to make the call to Russ and Ken and see what they think about a six pack setup on this motor. It doesn't seem like the six pack setup has enough airflow to make 700+ hp but who knows. Rossi used to make some serious power years ago with those carbs.

3 4412 500 CFM CARBS with the air horns cut down and the power valves blocked in the outboards is the route i would take. it would save several hundred dollars over six pack carbs

ANDY, WHATS THE PRICE FOR THE THROTTLE BRACKET AND LINKAGE RODS, I HAVE THE OFFSET TOP.
I LIKE WHAT I SEE.

how tall is the indy crossram ?

to mount two HOLLEY 750,s what linkiage whould you use ?

can you mount the 750s holley inline ?

I haven't set prices yet for this stuff since I haven't finished designing the kits yet.

How far offset are your carbs? I don't think I've seen an offset top. If they aren't offset very far maybe the heim joints would take up the angle. Othwise you would need a linkage with a jog in it.

ANDY,indy has a small offset top which is offset around 2" staggered, i've seen a intake with a jogged linkage rod, i made up a straight rod(not professionally done) waiting for your parts,with oe carb swivel ends, i think a small jogged linkage rod would work fine, pm me with a price on the throttle bracket, and linkage rod, i'll buy it immediately thanks, also i need one of those indy 2 piece valley covers machined so you can slip it under the heads so you dont have to remove the heads.