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-   -   What is a correct tunnel ram linkage? (https://www.yenko.net/forum/showthread.php?t=123117)

Hemicolt 06-22-2013 02:41 AM

What is a correct tunnel ram linkage?
 
Trying to figure out what inline tunnel ram linkage would be correct for Day 2.
Any thoughts or pictures?

Thanks

PxTx 06-22-2013 02:56 AM

Re: What is a correct tunnel ram linkage?
 
If it is for your Vega, I would lean towards sideways. By that time, Grumpy was dominating with sideways linkage. A big block Vega would not be following any mild street trends IMHO.

I'll loom for some pics to post.

Glenn70 06-22-2013 11:52 AM

Re: What is a correct tunnel ram linkage?
 
Heres a pic of my 70 from 1974, inline carbs and cobbled up linkage with a factory type cable. Inline or sideways is a choice but I think if sideways the carb bowls need to be changed to center hung floats so acceleration doesnt effect float operation.

[img:center]http://i1219.photobucket.com/albums/...s7/Image51.jpg[/img]

Lynn 06-22-2013 12:46 PM

Re: What is a correct tunnel ram linkage?
 
Very cool car and very cool vintage article.

Do you still have the car?

BTW, just an example of sloppy reporting. Pretty sure you LS-6 didn't have 2.02 intake valves.

Xplantdad 06-22-2013 01:35 PM

Re: What is a correct tunnel ram linkage?
 
Neat article!

Hemicolt 06-22-2013 01:48 PM

Re: What is a correct tunnel ram linkage?
 
1 Attachment(s)
I have to mount them inline, but would have liked them sideways. The intake is the Weiand three piece like on the Two Lane Blacktop 55.

PxTx 06-22-2013 02:12 PM

Re: What is a correct tunnel ram linkage?
 
That is an iconic intake, and your car is along that same timeline. Seems like the obvious answer is to run the same.

http://i710.photobucket.com/albums/w.../twolaneTR.jpg

Glenn70 06-22-2013 04:43 PM

Re: What is a correct tunnel ram linkage?
 
Thanks, Still own it today but it looks a bit different from this 1974 article. The day 2 stuff is long gone as is the vinyl top....

http://i1219.photobucket.com/albums/...7/IMG_0998.jpg[/img]

Lynn 06-22-2013 04:48 PM

Re: What is a correct tunnel ram linkage?
 
But at least it still has tow tabs.

Lynn 06-22-2013 04:49 PM

Re: What is a correct tunnel ram linkage?
 
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Hemicolt</div><div class="ubbcode-body">I have to mount them inline, but would have liked them sideways. The intake is the Weiand three piece like on the Two Lane Blacktop 55. </div></div>

That is so badass.

Pics man, pics!!!!!

Hemicolt 06-22-2013 06:33 PM

Re: What is a correct tunnel ram linkage?
 
1 Attachment(s)
The way they did the one on the movie car would be great. But does anyone have anymore pictures showing the entire linkage at the valve cover area? Pivot points and how they are hooked up, etc.?

Here is a picture of the engine.

whitetop 06-22-2013 07:16 PM

Re: What is a correct tunnel ram linkage?
 
Tracy, most guys just used the Weiand linkage..very simple and this IS what guys ran back then..this is what is on my Mustang built circa 1974-1975. Very simple to tune...all those new fancy linkage setup with 25 pivot points are ok but not period correct..

http://i.ebayimg.com/t/weiand-tunnel...RcGeg~~_35.JPG

http://img.photobucket.com/albums/v2...der/Tunnel.jpg

markjohnson 06-22-2013 07:22 PM

Re: What is a correct tunnel ram linkage?
 
The Two-Lane '55 had a bitchin' hydraulic linkage.

PxTx 06-22-2013 07:38 PM

Re: What is a correct tunnel ram linkage?
 
I dont even know what a hydro system looks like.

Lynn 06-22-2013 07:38 PM

Re: What is a correct tunnel ram linkage?
 
Tracy: Your motor looks killer.

I was poor enough in the early 70's that if I were installing a tunnel ram, I am certain I would just use a cable to the rear carb an connect the two carbs via a fixed rod. Store bought linkage?? Don't think so.

However, the weiand set up looks pretty simple and easy to use.

PxTx 06-22-2013 07:58 PM

Re: What is a correct tunnel ram linkage?
 
If I were building a Vega today, I would find it impossible to resist the influence of Bill Jenkins. He was the innovator defining the leading edge of technology and design. He knew a thing or two about carburetors. There are a lot of positives for the configuration he ran. It may not be easy or what everyone one else did/does but it is the best way to run a tunnel ram.

http://i154.photobucket.com/albums/s...ye777/g1-1.jpg

http://i154.photobucket.com/albums/s...neye777/g2.jpg

http://i154.photobucket.com/albums/s...neye777/g3.jpg

http://i154.photobucket.com/albums/s...neye777/g4.jpg

http://i154.photobucket.com/albums/s...eye777/gr5.jpg

Hemicolt 06-22-2013 08:29 PM

Re: What is a correct tunnel ram linkage?
 
Don't get me wrong....two 4150 style carbs mounted sideways is the look I love, but I can't turn these 600's to the side without modifying the intake and carbs. And I really don't want to do that.
I would like to see the hydraulic linkage.
It's funny what Dave posted about the Weiand linkage. A friend of mine, who had a t.r. intake back in the late 70's, stopped by the shop to borrow a tool. He was looking at my engine and telling me about his linkage. He described the Weiand linkage down to the last detail..lol He also told me a lot of bucks down guys would use a piece of all thread and a couple of the quick release studs to connect the carbs together. And as Lynn described, make some type of bracket to hook a cable or mechanical linkage to the rear.

BTW, great story on Jenkins. I've always wanted to see detailed pictures of that chassis.

VintageMusclecar 06-22-2013 11:19 PM

Re: What is a correct tunnel ram linkage?
 
I used the Weiand 4032 kit on this tunnel ram:

http://i33.photobucket.com/albums/d7...ps5f010cfc.jpg

If your manifold isn't drilled to mount the carbs sideways, there are adapters that bolt down using the existing forward mounting pattern that turn the carbs sideways. I used these adapters on the above manifold as it wasn't drilled to mount the carbs sideways. The manifold does need to be drilled for both the Holley and smaller Carter bolt patterns though. If yours isn't, it's an easy mod. I had to drill the smaller Carter pattern holes on this one.

mockingbird812 06-22-2013 11:21 PM

Re: What is a correct tunnel ram linkage?
 
That tunnel ram of Eric's is a thing of beauty. I have seen it in person and it is NICE! [img]<<GRAEMLIN_URL>>/drool.gif[/img]

Fast67VelleN2O 06-23-2013 12:38 AM

Re: What is a correct tunnel ram linkage?
 
I've got a vintage weiand setup with sideways carbs. I'll take pics tomorrow and post them.

Hemicolt 06-23-2013 12:44 AM

Re: What is a correct tunnel ram linkage?
 
I found the adapters, Edelbrock 2964. Something to consider.

VintageMusclecar 06-23-2013 12:57 AM

Re: What is a correct tunnel ram linkage?
 
I have a spare pair of adapters if you need them.

Hemicolt 06-23-2013 12:24 PM

Re: What is a correct tunnel ram linkage?
 
I zoomed in on the picture of Grumpys intake that Paul posted and noticed a couple of things. Even though they are mounted sideways, the carbs do not have center hung fuel bowls. However, they are mounted so that the primary bowls are facing the driver side of the engine. I wonder if that solved the fuel delivery problem with the 1850 carb mounted sideways? The linkage would either have to push up to open the carbs or pull from the passenger side.

Starship 06-23-2013 02:32 PM

Re: What is a correct tunnel ram linkage?
 
Whitetop's answer is right on the money. Here is a photo of my B/MP Camaro taken in Jan. 1971. http://i159.photobucket.com/albums/t...ps03260097.jpg Sorry can't seem to make image larger

whitetop 06-23-2013 09:38 PM

Re: What is a correct tunnel ram linkage?
 
Tracy, the big problem of running sideways carbs is you have to have an extra wide hole in the hood=weird looking if you are not running a hood scoop..

Verne_Frantz 06-24-2013 09:18 PM

Re: What is a correct tunnel ram linkage?
 
In my opinion, sideways carbs back then just were not done (that I saw anyway) on street cars. Most kids were on a budget and they just bolted everything together as it came, without a lot of science and expensive linkage. To me, sideways carbs were the &quot;thing&quot; the racers did, and they spent a LOT of money on a LOT of things to be competitive.

That's just the way I remember it (and did it myself)

Verne [img]<<GRAEMLIN_URL>>/biggthumpup.gif[/img]

whitetop 06-24-2013 11:05 PM

Re: What is a correct tunnel ram linkage?
 
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Verne_Frantz</div><div class="ubbcode-body">In my opinion, sideways carbs back then just were not done (that I saw anyway) on street cars. Most kids were on a budget and they just bolted everything together as it came, without a lot of science and expensive linkage. To me, sideways carbs were the &quot;thing&quot; the racers did, and they spent a LOT of money on a LOT of things to be competitive.

That's just the way I remember it (and did it myself)

Verne [img]<<GRAEMLIN_URL>>/biggthumpup.gif[/img] </div></div>

We need a &quot;like&quot; button...

PxTx 06-24-2013 11:26 PM

Re: What is a correct tunnel ram linkage?
 
I hear what you guys are saying, but this is my counter point. The car is a Vega with an L-88. How mant of those did we all see in the street? You can choose to be John Milner or Toad. Which linkage would Milner run?

PxTx 06-25-2013 12:45 AM

Re: What is a correct tunnel ram linkage?
 
This is how Bill said to run the Vega Pappas did last year.

http://i710.photobucket.com/albums/w...ps2407ecf3.jpg

Fast67VelleN2O 06-25-2013 01:01 AM

Re: What is a correct tunnel ram linkage?
 
2 Attachment(s)
Here is the vintage setup I have. Put together in the mid 1970's for a race car. Has sat ever since I picked it up.

Hemicolt 06-25-2013 01:59 AM

Re: What is a correct tunnel ram linkage?
 
This thread is very interesting. Again, it's been said you have to run center hung fuel bowls when you turn the carbs sideways, but here are two that do not. Also, what's the 45 degree fittings for on the fuel bowls that Paul shows?

PxTx 06-25-2013 03:30 AM

Re: What is a correct tunnel ram linkage?
 
Venting trick for maximum fuel flow.

Fast67VelleN2O 06-25-2013 03:46 AM

Re: What is a correct tunnel ram linkage?
 
I've had a few sets of 660 Holleys that had the vents on the top of the fuel bowls.

whitetop 06-25-2013 04:10 AM

Re: What is a correct tunnel ram linkage?
 
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: pxtx</div><div class="ubbcode-body">You can choose to be John Milner or Toad. Which linkage would Milner run? </div></div>

Well the '32 in the movie was as rough as a cobb so I would say Milners linkage would have been coat hanger and welding rod. SRS the car's fabrication and quality level was pee poor even for the time period.

PxTx 06-25-2013 09:53 AM

Re: What is a correct tunnel ram linkage?
 
Dave, we'll just have to disagree here. I'll be happy for Tracy whichever he chooses cause this isn't something which should stall the project.

Hemicolt 06-25-2013 01:54 PM

Re: What is a correct tunnel ram linkage?
 
Agreed. This is not a major issue, just wanted to get some ideas of what people were doing back then. I just want to know what was offered or if they were going to the hardware store and making it.
Would still like for someone to weigh in on the side hung fuel bowls on the turned carbs.

Hemicolt 06-26-2013 12:50 AM

Re: What is a correct tunnel ram linkage?
 
I spoke with my friend who does my machine work and he told me they have turned the carbs in the direction Grumpy did. He said with the primary bowl facing the passenger side of the car, the fuel level will move down under acceleration. With the carbs facing the way Grumpy did them, this will not happen. He said the fittings are to vent the bowls and was a trick that worked great.
For what it's worth, he told me the linkage that Dave recommends is the one most everyone bought and used back then.

whitetop 06-26-2013 04:19 PM

Re: What is a correct tunnel ram linkage?
 
Your BB tunnel ram coming out of the Vega hood is going to be very &quot;powerful&quot; as is..with the carbs facing sideways it may look top heavy and unsymetrical if that makes sense.

Glenn70 06-27-2013 11:33 AM

Re: What is a correct tunnel ram linkage?
 
Twin, angled dominators now thats making a statement! IMO the small 660's turned sideways just look weak without the larger bowls, especially on a big block engine. But every body has an opinion or like so its up to the cars owner to decide. Why not just make the final decision after the engine is in and you can put them either way and step back?



[img:center]http://i1219.photobucket.com/albums/...meangreen4.jpg[/img]

whitetop 06-30-2013 06:02 PM

Re: What is a correct tunnel ram linkage?
 
Tracy, a pic form 1977..

https://sphotos-a.xx.fbcdn.net/hphot...97487601_n.jpg


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