Tunnel Ram Idea: 2 barrel Holley Gurus?!

Agreed, me too. Just trying to point out that it will start, run, and go down the street. I'm sure the OP knows by now that there are better options for best performance...

 

Yes, but they did it with a low rise intake. There's a huge difference between a low rise and all that volume and distance a tunnel ram throws into the mix.

 

Agreed. But I will guess not that well, without considerable re-calibration. For a starter, I will bet he will have fun sorting the idle air/fuel ratio, although he strikes me as the type that really doesnt care much. I dont even want to think about WOT fuel distribution. Really, its an exercise in futility, it offers no advantage over a pair of small vacuum secondary four barrels, and if you have any intention of getting it to run properly, will require a great deal of time with a lamba sensor, number drills, and an EXPERIENCED carb guy. And in the end, for no advantage, other than having something that looks goofy. Bottom line, its an exercise in ****ing.

 

Just for ****s and grins I thought about a little experiment just to prove a point and maybe help some guys understand carbs. You tube video and all. Sometimes it helps to see things at the extreme ends to understand how the middle ground works.

I have a 392 in a run stand and I was going to mount a drilled jet 13hp lawn mower carb on it. It will start, it will stay running ( maybe go down the street) but it would be rpm limited. Then I thought you know what " its an exercise in ****ing. " and waste of time because the only guys who would get it already know.


Now 3 or 4 of them rascals on a tunnel ram would be OK.
I like the out of the box stuff myself. Wonder how the ram chargers group took the ribbing of their 3 feet high rubber hose intake ? That looks about as stupid as anything I ever seen - works though.

 

Cause I do not feel like going threw every piece, why not do something a little more sensible. They have 'Tri-Power' manifolds for SBCs so why not make a 'Tri Power' top for a tunnel ram base. This would allow you to have a bunch of room for tuning and if you wanted you could do some experimentation with the boosters in the carbs.

And for 2 barrels the biggest ones I know of are 2300's that are worked on to be 500CFM and thats for dirt/circle track racing.

Anyways.... carry on fellers!

 

Theres a fundamental difference between EVERY SINGLE example you have given, and what the OP is proposing. EVERY SINGLE example of experimention that you have given was an effort to try to improve performance and make more power, by guys that had a clear understanding of what they were doing, and the physics involved. The OP is not doing this in an attempt to make more power, or even to learn anything, in fact, he knows (if he doesnt, then he REALLY DOES belong on the short bus) its not even going to make as much power as his Q-jet, hes doing it to attract attention. That is a VERY BIG difference, and its actually somewhat insulting to a lot of pioneers of the sport to even make this comparision.
And as far as that goes, he's not even breaking any new ground, it was done back in the total ***hat days of the "Pro-Street" movement. And if I hunt around, I can find a photo to prove it, that is if you guys can stomach all the billet and fake gold plating.

 

I think that my comments have been taken out of context. I certainly mean no disrespect to pioneers or innovators. My comments are pertaining to and compared to concept of being weird. Not particularly to two 2bbls on a tunnel ram which is also weird. Weird doesn't always mean wrong or some other derogatory adjective, weird lead to places. Sometimes tgey are places we shouldnt go and then sometimes you find cool stuff. Oh And then there's the sarcasm involved which doesn't always come thru

Thought you were busy

 

Well not right now, I'm at work...

 

To turn everyones attention from hurp durp I'm **** hurt cause someone said something, that I disagree with, etc etc. Let us take a look at a thread, that I am sure will help the OP, and make a few ol guys smile.

http://www.jalopyjournal.com/forum/showthread.php?p=6147840

 

Sounds a little like what a magazine editor said in a recent article which he misquoted me in.

 

Running a vintage edelbrock tunned ram on a 427TD Chevy w/ 2 600 cfm Edelbrock AFB's, if you run the tunnel ram, run the smaller 390's (expensive) but the right combo.

 

Wasn't me!

 

Damn! Can't be done! With two! How ‘bout 3? Bla, Bla, Bla! Bla, Bla, Bla! Man, some people really do need to get off the horse. If you’re gonna’ use foolish non- supportable arguments because pride has been curbed, look around first to ensure that proof is not so readily available. Also, it is foolish to make any ***umptions regarding a person's past racing or rodding history and experiences.

On the next post, make a list of the numerous inventive placards you have been awarded and then after posting them here, go and hang them in the ****ter so they receive proper respect.

Lastly, the best one - always for last…“disrespect to the past greats of racing” as support for this, a foolish, one-sided, nonexistent debate.

Please, good sir, pray tell, which great creative successes have you logged in the annuls of hot rodding as of late?

Shot! Flat out shot!

 

Ok so you are going to do it no matter what. Do your shelf a favor and find two of the big ones thay will have a ventury size of 1 3/8 inch. If you go to your pick a part and start looking at these carbs lay made many sizes. Open the choke and look down inside and see the differance.
My dad had a ford P/U with a2brl and it ran yes but no power and bad gas milage when I worked on it and checked out the carb **** my lawn mower had a bigger carb on it than the truck.
Find the BIG ONES you will be much happyer.

 

Relax, take a deep breath and unwad your *******.
If you want to try it then try it. Works or not ? Either way you are going to learn something very useful and valuable

 

Thanks; see, that is actually helpful.

Pork

 

I'm not worked up. My responses wouldn't be as they are should I be truly worked up or bothered.

Fact is, I am probably going to leave the four barrel on until I get the entire car together and up and down my street a few times. After that, I will throw the ram on the car and do the same (up and down the street), before busting it apart for final prep.

The cool thing is in my development, we own our roads (pain with snow plowing), so I can't be bothered by cops.

This stuff is fun. At least I am in a group (here) that gets what the hell I am talking about and can challange that I'm an idiot or not with knowledge.

Too be honest, I have been so shot as of late, I should be working on the damn car more than I am typing on here. I think that now, with winter and my damn work schedule being so stupid crazy, that I spend more time on here debating this stuff than I do working down in the garage.

People don't realize the work it takes to build these damn things (well, you'll do).

My wife, when she sees me typing on here, says that this place (the Hamb) seems like the man's version of the Nail Salon. She might be right, but I'll never let on.

Pork

 

Interesting. I ***umed when you started this post it was to get input from others as to whether they thought it would work. But if most the replies were from those who thought it was a bad idea, then they are "a foolish, one-sided, nonexistent debate"?
It sounds as though you decided what you were going to do before you ever started this thread, so why not just have at it?

 

'
Pretty much the case, as with everything in life. People don't pay my taxes and have never come over to swing a wrench in my shop (at least not from this site); so, I guess you are quite correct; I pretty much did have my mind made up from the go and I will do it- no question to any of that. But I don't believe that such was ever a question. I was asking for carb knowledge/suggestions, rebuild, jets, etc.

And I might note, I never draw first blood. It's not in my nature. Review the post and you will see where it runs astray.

The Pork

 

Man, I think those Autolite 2Vs are the best kept secret in hot rodding!!! They've built them in various configurations for 40 years. The venturii size is cast into the side of every main body, ranging from .98" to around 1.33". so several CFM ratings are available. I use two 1.08s on my Willys coupe:




It gets 17 mpg, drives real smoothly without carb heat, and I can drive it off the street and on to the strip with street tires and run 13s.

They have the same bolt pattern as a Holley, are better at part throttle, and much easier to work on. The top can be removed (even with the engine running!!!) and jets, accellerator pumps, and power valves and needle/seat ***emblies are easily changed.

I hope I didn't stray too off topic from your discussion but know that two-2s can work well and, in my opinion, can look even better than a quad.

BTW, here's the CFM ratings for the Autolite's.
1.01 = 240
1.02 = 245
1.08 = 287
1.14 = 300
1.21 = 351
1.23 = 356
1.33 = 424

 

You Rock FTF! Thanks for the info! Now that is what I'm Talking About!. Any man that can run a inline in the 13s on the strip and drive on the street is a man I am taking advice from. Thanks for the info. I didn't know about the stampings, but now I do. This is why I love the Hamb!

 

Randy, another way to get around buying the QJ sep plate is to buy the Moroso or Mr. Gasket adaptor plate. They can be had for 10 bucks on Sleabay and they have cut outs for the larger secondaries and bolt right to Holley bolt pattern. Worst case, I could always go for the single top plate for another 80 bucks and put my QJ on top as well.

 

Hey, you're welcome buddy. Go for it!

No brag, just fact...

 

The CFM rating is measured differently for 2 bbl vs 4 bbl.
I don't know why that is, it never made sense to me so I never bothered to study it. I've forgotten most of what I did know about this. They are measured against different vacuum values but can't remember which is which

Maybe someone else can run with this ball

 

Four barrels are rated at a depression of 1.5 in. hg.

Two barrells are rated at a depression of 3.0 in.hg.

As a point of reference a 500 cfm 2V has an equivalent flow of a 357 cfm 4V.

 

Now that is da' Fn' bomb!

 

That's what I'm talking about !
Gotta love this place
Thanks

 

Thanks. Its coming together nicely, maybe giant rooster tails of dust this year.



Re 2Vs: As a point of reference, I'm using three 540 cfm 2Vs on my avatar altered - on a six!

 

You could actually make a top plate for 1/4 of that cost. You could even make a top plate for your 2x2 setup and run no adapters at all.

I knew a guy a long time ago that had an old ridge runner, he had several top plates that he made in his barn. He would change them out according to his whim at the time.