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All Indy 440-25 crossram users....... #461084
09/06/09 09:17 PM 09/06/09 09:17 PM

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post up your jetting
metering jets, metering rods, metering springs, accelerator pump home placement.
and what jets you run.
also post your altitude where you run at, which is very important.
after everyone puts up your jets sizes, i will share a secret which will get you .15 faster ET with your combo.
a few select guys on here may know of the secret but ill share it with you anyway.

Last edited by SUPERSTOCKRACER; 09/06/09 09:19 PM.
Re: All Indy 440-25 crossram users....... #461085
09/06/09 09:20 PM 09/06/09 09:20 PM

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also forgot to add your cubic inch displacement.

Re: All Indy 440-25 crossram users....... #461086
09/06/09 10:00 PM 09/06/09 10:00 PM
Joined: Mar 2006
Posts: 9,835
MI, usa
dvw Offline
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When I had mine(long ago) Kenny Lazari from Indy told me to jet them 113 square. I didn't run the manifold very long so thats how I left them. I always wondered why you wouldn't run larger primarys than secondarys due to the metering rods. The other thing I thought about was this. With the boosters being different sizes could they require more or less fuel to obtain the same fuel mixture in the primary and secondary sides? How about high speed bleeds to talor the entire fuel curve? I'm always looking for more info ontheses carbs. The new motor is 572,15-1,-1 heads,440-25 intake. I have both Cater Comp 750s and Eddelbrock 750s.
Doug
Re: All Indy 440-25 crossram users....... [Re: dvw] #461087
09/06/09 11:15 PM 09/06/09 11:15 PM
Joined: Jan 2003
Posts: 6,350
Aurora, Oh.
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out of the box 800's..... on a 492 CI
Re: All Indy 440-25 crossram users....... [Re: max_maniac] #461088
09/06/09 11:17 PM 09/06/09 11:17 PM
Joined: Feb 2006
Posts: 2,379
MD
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top fuel
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MD
might get one soon...
Re: All Indy 440-25 crossram users....... #461089
09/07/09 02:38 PM 09/07/09 02:38 PM

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does it matter which carbs are being used?
Re: All Indy 440-25 crossram users....... #461090
09/07/09 04:06 PM 09/07/09 04:06 PM

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Quote:

does it matter which carbs are being used?



works with both carter and edelbrocks, i just switched out a set of 750 carters to edelbrock 800's leaned them out a tad and went with a little richer metering rod for this weekend.
i feel it was too rich at launch only getting a 1.41 60 foot. and it slowed down 3 mph and .1 with 3 jet sizes richer.
i definitely thought the .116 jets would have woken the car up but no, even with half way decent air, it slowed down so ill be at .113 square for this weekend.

Last edited by SUPERSTOCKRACER; 09/07/09 04:07 PM.
Re: All Indy 440-25 crossram users....... #461091
09/07/09 04:33 PM 09/07/09 04:33 PM

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We are running .119sq. and the lightest springs and the large squirters. My 800's are highly modified, no air horns...They are worth .3 over stock 750's

5468116-PRP1.jpg (133 downloads)
Re: All Indy 440-25 crossram users....... #461092
09/07/09 07:52 PM 09/07/09 07:52 PM
Joined: Mar 2006
Posts: 9,835
MI, usa
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Everyone I've talked to said the 800s were no better. Whats done to them? No air horns are supposed to be a NO NO. I personally think its a dumb rule. I would like to know what was done or who did them. Unless its a secret.
Doug
Re: All Indy 440-25 crossram users....... #461093
09/07/09 09:01 PM 09/07/09 09:01 PM
Joined: Jan 2003
Posts: 6,350
Aurora, Oh.
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Quote:

Quote:

does it matter which carbs are being used?



works with both carter and edelbrocks, i just switched out a set of 750 carters to edelbrock 800's leaned them out a tad and went with a little richer metering rod for this weekend.
i feel it was too rich at launch only getting a 1.41 60 foot. and it slowed down 3 mph and .1 with 3 jet sizes richer.
i definitely thought the .116 jets would have woken the car up but no, even with half way decent air, it slowed down so ill be at .113 square for this weekend.



Ok now I'm confused you start this post letting us know that you have the secret to tune these carbs for a .15 better et and then you say you adjusted "yours" and you lose et so is this a trick post

Re: All Indy 440-25 crossram users....... [Re: dvw] #461094
09/07/09 09:09 PM 09/07/09 09:09 PM

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They are a pair of Damon Kuhn 800's that have been massaged in the venturi areas, had mods done to the weights and to the fuel bowls along with several other internal mods. Pm me Doug if you want all the details....poppaj

Re: All Indy 440-25 crossram users....... [Re: max_maniac] #461095
09/07/09 09:24 PM 09/07/09 09:24 PM

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Quote:

Quote:

Quote:

does it matter which carbs are being used?



works with both carter and edelbrocks, i just switched out a set of 750 carters to edelbrock 800's leaned them out a tad and went with a little richer metering rod for this weekend.
i feel it was too rich at launch only getting a 1.41 60 foot. and it slowed down 3 mph and .1 with 3 jet sizes richer.
i definitely thought the .116 jets would have woken the car up but no, even with half way decent air, it slowed down so ill be at .113 square for this weekend.



Ok now I'm confused you start this post letting us know that you have the secret to tune these carbs for a .15 better et and then you say you adjusted "yours" and you lose et so is this a trick post



Russ, no this is not a trick post, i already found the .15 increase, i was just looking to see if i could squeeze another .0500 out of the combo, i jetted it up some more figuring the air was a little better but it didnt work, so im going to try a jet configuration.
im looking for some more jet combos from a few more 440-25 members then ill all let you in on the easiest cheapest way to pick up .15
Re: All Indy 440-25 crossram users....... #461096
09/08/09 03:28 PM 09/08/09 03:28 PM
Joined: Dec 2005
Posts: 1,495
Shelby mi.
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We had 113pri-107 sec. went [Email]9.05@149.66[/Email] at 2800da.@3620 lbs.

Last edited by JAKE68; 09/10/09 11:15 AM.
JAKES AUTOMOTIVE
Re: All Indy 440-25 crossram users....... [Re: JAKE68] #461097
09/08/09 03:35 PM 09/08/09 03:35 PM
Joined: Jun 2003
Posts: 9,225
Charleston
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my interest is peaked but i have never ran the combo

Gen 3 power 6.22@110, 9.85@135
Follow @g3hemiswap on instagram

performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
Re: All Indy 440-25 crossram users....... [Re: sixpackgut] #461098
09/10/09 08:53 AM 09/10/09 08:53 AM

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Maybe you're talking about closing the rear throttle blades about 15*????.............

Re: All Indy 440-25 crossram users....... #461099
09/10/09 09:00 AM 09/10/09 09:00 AM
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Aurora, Oh.
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cmon Chris.... I need to know quickly so I can test it this weekend.
Re: All Indy 440-25 crossram users....... #461100
09/11/09 06:57 PM 09/11/09 06:57 PM
Joined: Dec 2003
Posts: 1,400
Wi.
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Quote:

Quote:

Quote:

Quote:

does it matter which carbs are being used?



works with both carter and edelbrocks, i just switched out a set of 750 carters to edelbrock 800's leaned them out a tad and went with a little richer metering rod for this weekend.
i feel it was too rich at launch only getting a 1.41 60 foot. and it slowed down 3 mph and .1 with 3 jet sizes richer.
i definitely thought the .116 jets would have woken the car up but no, even with half way decent air, it slowed down so ill be at .113 square for this weekend.



Ok now I'm confused you start this post letting us know that you have the secret to tune these carbs for a .15 better et and then you say you adjusted "yours" and you lose et so is this a trick post



Russ, no this is not a trick post, i already found the .15 increase, i was just looking to see if i could squeeze another .0500 out of the combo, i jetted it up some more figuring the air was a little better but it didnt work, so im going to try a jet configuration.
im looking for some more jet combos from a few more 440-25 members then ill all let you in on the easiest cheapest way to pick up .15



we're still waiting for the easiest cheapest way to pick up .15!!!!
thanks
Re: All Indy 440-25 crossram users....... [Re: old_racer] #461101
09/11/09 09:34 PM 09/11/09 09:34 PM

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heres the pieces to put inside the indy crossram,they are made of epoxy sleeved with longer bolts.
they are going on my 500 ci motor in my 63 plymouth, this should get me right where i wanna be.
Re: All Indy 440-25 crossram users....... #461102
09/11/09 09:40 PM 09/11/09 09:40 PM
Joined: Jan 2003
Posts: 6,350
Aurora, Oh.
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Quote:

heres the pieces to put inside the indy crossram,they are made of epoxy sleeved with longer bolts.
they are going on my 500 ci motor in my 63 plymouth, this should get me right where i wanna be.





And here all along I thought you were going to tell us all to join Jenny Craig I know I could lose a few lbs but not enough to gain .15 so, are you going to do a back to back test on these at the track to verify the .15 gain?


Russ
Re: All Indy 440-25 crossram users....... [Re: max_maniac] #461103
09/11/09 09:43 PM 09/11/09 09:43 PM

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Quote:

Quote:

heres the pieces to put inside the indy crossram,they are made of epoxy sleeved with longer bolts.
they are going on my 500 ci motor in my 63 plymouth, this should get me right where i wanna be.





And here all along I thought you were going to tell us all to join Jenny Craig I know I could lose a few lbs but not enough to gain .15 so, are you going to do a back to back test on these at the track to verify the .15 gain?


Russ



already have Russ on the 65 dodge, its a full .15
i had to get the other set before i posted, they've just made another run of them.

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