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511 Indy tunnel ram which carbs #2721545
12/04/19 11:48 PM
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flint michigan
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working on another induction option. 511 with 12.5:1 compression a 270@50 SFT and an Indy 400-I4-15 t ram. Street/strip deal, which carbs would give best all around performance, 650,660 or 750? I see most like the 750's and there are some that like the 660's. My thinking is to err on the small side with the 650's. It seems the Indy tunnel ram has a very large plenum and I thought maybe the smaller carbs would help crutch this on this combo. 5100 stall and car weights 3380#. Appreciate your opinion on this. Thanks

Re: 511 Indy tunnel ram which carbs [Re: mopar dave] #2721551
12/05/19 01:03 AM
12/05/19 01:03 AM
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Originally Posted by mopar dave
working on another induction option. 511 with 12.5:1 compression a 270@50 SFT and an Indy 400-I4-15 t ram. Street/strip deal, which carbs would give best all around performance, 650,660 or 750? I see most like the 750's and there are some that like the 660's. My thinking is to err on the small side with the 650's. It seems the Indy tunnel ram has a very large plenum and I thought maybe the smaller carbs would help crutch this on this combo. 5100 stall and car weights 3380#. Appreciate your opinion on this. Thanks



I would throw the 660's in the river. Or sell them to someone still living in 1975. The absolute smallest carbs I would run would have a 1.410ish Venturi and 1.750 throttle blades. There is no reason you can't call Dom and do a couple of 1050 Dominators and really kick [censored].

No vacuum secondary carb. Most guys err on the small side and don't buy a cam for the TR. If that cam wasn't ground specifically for the TR I'd sell it and get one that is. And a minimum of two 750's. A very, VERY smart guy who worked for a very cool company once told me to really get the correct carb on a TR you double what you'd be using on a single 4. And he told me that in 1982. It still stands today.


Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
Re: 511 Indy tunnel ram which carbs [Re: mopar dave] #2721554
12/05/19 01:26 AM
12/05/19 01:26 AM
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I like the early non HP Holley 1050 CFM Dominator list #9375 on both tunnel rams as well as on a good single plane BB Mopar intake, those carbs flat work well up,
Especially with M.W type heads, more air and fuel = more power boogie

Last edited by Cab_Burge; 12/05/19 01:26 AM.

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: 511 Indy tunnel ram which carbs [Re: mopar dave] #2721575
12/05/19 06:33 AM
12/05/19 06:33 AM
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Val-haul-ass... eventually
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So, you're considering a t-ram, or you've bought one?

Re: 511 Indy tunnel ram which carbs [Re: HardcoreB] #2721591
12/05/19 07:59 AM
12/05/19 07:59 AM
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The INDY tunnel ram has a SMALL plenum. IIRC it was about 300cc

Re: 511 Indy tunnel ram which carbs [Re: BradH] #2721595
12/05/19 08:17 AM
12/05/19 08:17 AM
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flint michigan
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Just researching it at the moment Brad. The m1 tunnel ram seems to be the one to have, but can't find one. The Indy is available and will most likely be the one I buy. This is just something I have always wanted to do since I was in high school. Mostly for the old school look for the car show or two I hit, but I don't want to lose any performance. Gonna black everything out and would like to use the black and grey ultra xp carbs. Think that would look sweet sticking up thru the black hood. Working sh!t tons of hours now, so i'm gonna get started on buying parts for this project. Should be able to get started installing them this time next year. The 511 will run with 12.5:1 compression as the only change next year, so I need to see for myself what a compression bump can do for performance. I read somewhere else too that a T ram likes a cam 7-10* smaller than your best cam in a single carb/standard intake combo and thought since my cam will be on the small side with the 12.5:1 compression it might work out quite well. When I do get a roller it will be for a t ram application, but for now this cam stays. I just want to get the carbs right as its the only question I have right now for this combo. I will be talking to Dom about this as well. It has crossed my mind running twin 750 Dominators, but I haven't seen any combos with those carbs. I have seen some that ran a single 1050, installed a T ram with twin 1050's and didn't pick up anything. Then there are some that ran a single 1050 and installed a t ram with twin 750's and went faster. So, right now i'm a bit skeptical on twin 1050's especially on the street.

Re: 511 Indy tunnel ram which carbs [Re: HardcoreB] #2721604
12/05/19 08:58 AM
12/05/19 08:58 AM
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flint michigan
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Are you referring to the runner or the plenum? Pretty sure the plenum is more than 300cc. The 750's you have for sale, are they the ones in your avatar?

Re: 511 Indy tunnel ram which carbs [Re: mopar dave] #2721621
12/05/19 09:57 AM
12/05/19 09:57 AM
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Clanton Offline
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I believe the plenum on a single 4 should be 1.5x the volume of 1 cylinder so I wonder what a tr should be.Would the tr carbs be side mount or in line?
Originally Posted by mopar dave
Are you referring to the runner or the plenum? Pretty sure the plenum is more than 300cc. The 750's you have for sale, are they the ones in your avatar?


GOTBOOST!New improved with Victor heads.
http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/
Re: 511 Indy tunnel ram which carbs [Re: Clanton] #2721627
12/05/19 10:13 AM
12/05/19 10:13 AM
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Den300 Offline
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Can the M1 or Weiand TRs be ported to max wedge size as well?


Hamburg/Germany

69 Chrysler 300
446cui Dual Quad
12.64 @ 110.7

Re: 511 Indy tunnel ram which carbs [Re: Clanton] #2721636
12/05/19 10:41 AM
12/05/19 10:41 AM
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flint michigan
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Side mount only unless I run eddys.

Re: 511 Indy tunnel ram which carbs [Re: Den300] #2721668
12/05/19 12:12 PM
12/05/19 12:12 PM
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Originally Posted by Den300
Can the M1 or Weiand TRs be ported to max wedge size as well?


No for either one.


'86 Maple Grove KOS Mopar low qualifier......true street legal with no power adders.

NOS-used when losing since 1940. "Trust the plan"-Q.
Re: 511 Indy tunnel ram which carbs [Re: mopar dave] #2721683
12/05/19 12:48 PM
12/05/19 12:48 PM
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I also have a low deck m1 t/r.

mopartsengpic2.JPG
Re: 511 Indy tunnel ram which carbs [Re: HardcoreB] #2721693
12/05/19 01:28 PM
12/05/19 01:28 PM
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flint michigan
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I like the idea on the annular boosters.

Re: 511 Indy tunnel ram which carbs [Re: mopar dave] #2721698
12/05/19 01:46 PM
12/05/19 01:46 PM
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Is this for your car? If so, I'd recommend a pair of small Edelbrock carbs. If you brought the engine to me I'd run it with a pair of 500 cfm Edelbrocks on the dyno and go from there. That setup can easily handle 800 hp and from what I recall, you're not making anything close to 800 hp right now.

Re: 511 Indy tunnel ram which carbs [Re: HardcoreB] #2721701
12/05/19 01:49 PM
12/05/19 01:49 PM
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flint michigan
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HardcoreB, your PM's are full. Shoot me a price on those 2 items. I may know someone interested.

Re: 511 Indy tunnel ram which carbs [Re: AndyF] #2721704
12/05/19 01:52 PM
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Andy, I'm leaning toward Indy t ram with ultra xp 650's for my combo. How much power do you think the eddy 500's can make on my combo?

Re: 511 Indy tunnel ram which carbs [Re: mopar dave] #2721719
12/05/19 02:16 PM
12/05/19 02:16 PM
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Just call me and we'll get you hooked up w/proven carbs like the several t-rams I've done w/great success..........I would not run Dommy's on that combo personally unless you want the "look" because they would have to be be sized down to run well imo.......


72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
Re: 511 Indy tunnel ram which carbs [Re: Thumperdart] #2721726
12/05/19 02:32 PM
12/05/19 02:32 PM
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Could he run a single carb?
Originally Posted by Thumperdart
Just call me and we'll get you hooked up w/proven carbs like the several t-rams I've done w/great success..........I would not run Dommy's on that combo personally unless you want the "look" because they would have to be be sized down to run well imo.......


GOTBOOST!New improved with Victor heads.
http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/
Re: 511 Indy tunnel ram which carbs [Re: mopar dave] #2721756
12/05/19 04:01 PM
12/05/19 04:01 PM
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Originally Posted by mopar dave
Andy, I'm leaning toward Indy t ram with ultra xp 650's for my combo. How much power do you think the eddy 500's can make on my combo?


XP 650 carbs will cost a lot more than a pair of Edelbrock carbs. For your engine and your use the Edelbrocks will work fine and save you a ton of money. Or, if you're ready to go EFI get a dual Sniper setup with a Hyperspark distributor. Then you'll have full digital control of your fuel curve and ignition. You'll also have wide band feedback so you'll know what your air fuel ratio is and you'll be able to run data logs on the street or track. Something like that would answer a lot of questions that you have.

Re: 511 Indy tunnel ram which carbs [Re: madscientist] #2721783
12/05/19 05:19 PM
12/05/19 05:19 PM
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Originally Posted by madscientist


No vacuum secondary carb. Most guys err on the small side and don't buy a cam for the TR. If that cam wasn't ground specifically for the TR I'd sell it and get one that is. And a minimum of two 750's. A very, VERY smart guy who worked for a very cool company once told me to really get the correct carb on a TR you double what you'd be using on a single 4. And he told me that in 1982. It still stands today.
Good post. Glad somebody understands how a tunnel ram works.

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