Re: period correct tunnel rams carbs
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: YENKO DEUCE REGISTRY</div><div class="ubbcode-body">The 600's sound good to me, how do I decipher the 'all metal' versions?

Ignition? I'm open on that one too. Was thinking of using a Mallory Unilite w/ a Blaster coil. I know that stuff is newer, but I know the least about ignition so I wanted to ensure the most reliability in that area. But, open to vintage suggestions here too. </div></div>

Just use the tried and true MSD 6AL and hide it behind the glove box inside the car. WE have never had any luck with the Uni-lite stuff.

Re: period correct tunnel rams carbs
 

Funny, no one on here has mentioned Carter/Edelbrock carbs? For more :street&quot; orientated driving they would be my first choice as we have had a number of them and worked very well and wasn't that hard to set-up.

On my ZL-1 deal I'm going twin throttle bodies and EFI so I can go from the TR2-X to Holley strip Dom. intake to 3933198 and just put in a different program. Even looking at &quot;stacked&quot; injection with the EFI conversion just to play with.

Re: period correct tunnel rams carbs
 

Have you looked at the new MSD Atomic efi?

http://www.atomicefi.com/

Looks like it may be easy to hide under a dropped base air cleaner.


<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: EZ Nova</div><div class="ubbcode-body">Funny, no one on here has mentioned Carter/Edelbrock carbs? For more :street&quot; orientated driving they would be my first choice as we have had a number of them and worked very well and wasn't that hard to set-up.

On my ZL-1 deal I'm going twin throttle bodies and EFI so I can go from the TR2-X to Holley strip Dom. intake to 3933198 and just put in a different program. Even looking at &quot;stacked&quot; injection with the EFI conversion just to play with. </div></div>

Re: period correct tunnel rams carbs
 

&quot;Just use the tried and true MSD 6AL and hide it behind the glove box inside the car. WE have never had any luck with the Uni-lite stuff.&quot;

A big Plus 1 on that man. When I had my speed shops in the seventies, we were pretty much overwhelmed with warranty claims on the Unilite stuff. So much so, we tried not to sell it, because all it did was to create an unhappy customer.

Wayne

Re: period correct tunnel rams carbs
 

My ZL-1 uses thermoquads.
My intake is a 1969-70 tunnel ram.
I am looking for a quad top for my weiand. Currently I use a Holley top with a holley to quad spacer.
I take these carbs any day.

Re: period correct tunnel rams carbs
 

I've had lots of luck with an MSD ignition boxes.

As for the distributor, nothing wrong in my book with starting out with a stock core. I think you and Benjamin can use one of the stock ones you have and give it a fresh overhaul, &quot;ball point pen spring&quot; re-curve, mod your vac advance travel and limit it to no more than 10 degrees.

Triggering of the CD box can still be with points. If you are worried about the rubbing block wear etc. than your favorite under cap electronic conversion. Crane offers one with a rev limiter that seems to be decent, but far from your only choice.

http://www.fordmuscle.com/archives/2.../xribox_lg.jpg

Re: period correct tunnel rams carbs
 

I thought Crane went out of business?

Re: period correct tunnel rams carbs
 

They seem to think differently:

http://www.facebook.com/cranecams

Re: period correct tunnel rams carbs
 

They were bought out by S&amp;S Cycle.

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Nova Jed</div><div class="ubbcode-body">I thought Crane went out of business? </div></div>

Re: period correct tunnel rams carbs
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: pxtx</div><div class="ubbcode-body">I've had lots of luck with an MSD ignition boxes.

As for the distributor, nothing wrong in my book with starting out with a stock core. I think you and Benjamin can use one of the stock ones you have and give it a fresh overhaul, &quot;ball point pen spring&quot; re-curve, mod your vac advance travel and limit it to no more than 10 degrees.

Triggering of the CD box can still be with points. If you are worried about the rubbing block wear etc. than your favorite under cap electronic conversion. Crane offers one with a rev limiter that seems to be decent, but far from your only choice.

http://www.fordmuscle.com/archives/2.../xribox_lg.jpg </div></div>

X2 with the XR-i ignition. It worked great in my BBC Nova and the rev limiter was good insurance....cause I like RPM's. [img]<<GRAEMLIN_URL>>/naughty.gif[/img]

Kurt

Re: period correct tunnel rams carbs
 

All of that sounds great - I wasn't sure if the stock dizzy would fit the TR. Love the under cap stuff, and the hidden MSD box.

Re: period correct tunnel rams carbs
 

Here is a pic of a factory Pontiac tunnel ram intake.The coined name on it was the &quot;bathtub intake&quot;.They were givin to factory pontiac racers the end of 1962.Might have been one of the earlyest tunnel ram intakes.Tom

Re: period correct tunnel rams carbs
 

Do you know any more info. I heard only 18 were made,can you help. *Paul

Re: period correct tunnel rams carbs
 

Really not sure,back in the 63-64 time I owned 2 diff ones and again in the 90s I owned a couple more.There was a run of repop intakes done by some guys in IL,I believe about 25-30 of them.I have 2 now and have owned a few others.Randy Williams before he passed away did another run of repops with the post 64 water pattern.He made about a 1/2 dz with diff plenum designs.The repops work better than the originals as the desogn flaw they had was reomoved.Tom

Re: period correct tunnel rams carbs
 

removed!

Re: period correct tunnel rams carbs
 

Casting slag on the edges was still there,in the one that I had in my hands. *Paul

Re: period correct tunnel rams carbs
 

Great info Tom!

Re: period correct tunnel rams 4 carbs
 

It also had spots for small carbs just for idle. Wow that is some intake,Tunnel Ram that is. I think now a days you can just buy a Edelbrock Tunnel Ram that out does the factory set up. *Paul

Re: period correct tunnel rams 4 carbs
 

the original intake had a spot in the center for a side draft 1 bbl idel carb.Never seen one used but have seen a factory pic of one installed.Tom

Re: period correct tunnel rams 4 carbs
 

Very interesting, had to do a quick search for pics. ANyone have the factory shots?

http://i137.photobucket.com/albums/q...tachment-2.jpg

http://i137.photobucket.com/albums/q...e/DSC01245.jpg

http://i137.photobucket.com/albums/q...e/DSC01248.jpg

Re: period correct tunnel rams 4 carbs
 

that top pic is another of mine.The bottem is a repop.I will see if I can get a pic from Pete McCarthys book goo enough to post.Tom

Re: period correct tunnel rams 4 carbs
 

they came out OK,and it WAS a 2bbl carb for the center.Tom

Re: period correct tunnel rams 4 carbs
 

WOW! Thanks for posting. Really cool factory gradndaddy of Tunnel Ram right there.

Re: period correct tunnel rams 4 carbs
 

That's pretty sweet - gotta love rare factory performance parts!

Re: period correct tunnel rams 3 carbs or ten bbl
 

Thats the one factory bathtub grandndaddy tunnel ram with 2bbl idling carb. The one I was talking about was not for a wagon. You have all the info I could ask for and pictures also. Thank you Tom. *Paul

Re: period correct tunnel rams 3 carbs or ten bbl
 

Most non pontiac guys have NO clue how far ahead of the HiPo biz that Pontiac was back them.When the racing ban went into effect in 63 it pretty much cut the heart out of the engineers.The RA V tunnel port project in 69 was just a copy of the Ford tunnel port program.I was lucky enough to be racing in the early 60s and had the inside track on the SD parts and programs becaus of Micky Thompson and Jess Tyree.I still have one of the alu RA V blocks,a 303 SCCA short deck Cross Ram intakes stached away.Tom

Re: period correct tunnel rams 3 carbs or ten bbl
 

Can anyone post a clearer picture of the 3 barrel Carter AFB?

-Matt

Re: period correct tunnel rams carbs
 

I have seen two 3 barrel Holley 950cfm and I think 3 barrel Holley 1050cfm on Tunnel Ram,that's all. *Paul

Re: period correct tunnel rams carbs
 

I have owned a few of them,will see if I have any old pics around.They were used on the super speedways only.They had no primary metering rods and were 1 to one on the primary and secondarys.Also had no air valves on the secondary.They made VERY few of them.Seems like the intakes show up way more than the carbs.Tom

Re: period correct tunnel rams carbs
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: tjs44</div><div class="ubbcode-body">I have owned a few of them,will see if I have any old pics around.They were used on the super speedways only.They had no primary metering rods and were 1 to one on the primary and secondarys.Also had no air valves on the secondary.They made VERY few of them.Seems like the intakes show up way more than the carbs.Tom </div></div>

The reason that I ask is that my dad saw an NOS one at Carlisle in the 1980's and told me about it when I picked up a few Holley 3 barrels a few years back. I would like to show him some pictures to show that he was right (I was a doubter since I have never seen one until now).

-Matt

Re: period correct tunnel rams carbs
 

that pic of the underside shows the only real diff.From the top they look exactly like a 750 SD AFB like what is on my bathtub pic.Tom

Re: period correct tunnel rams carbs
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Hemicolt</div><div class="ubbcode-body">From what I know, there is a dash and a number after the part number for every time there was a change in the carb.
In other words 1850 would be a first edition, 1850-1 would be second edition, etc.
I can't say for sure what -numbers indicate what year span, but I'm sure someone here or at Holley can tell you.
The 600's I'm going to use are 1850-1. They are all metal with the good metal floats. Everyone is pretty much right about the carbs., 660's are just about made for wide open only and very difficult to make work well for the street. </div></div>

Ok, so I should be looking for 1850's, or 1850-1's, with vacuum secondaries. What about choke? Are the 1850 series all manual choke units?

Also, I see some ad's that say '...not dual quad carbs...', what does that mean? Can't you just mount 2 of these 1850 units and connect them together with the throttle linkage and fuel lines? I'm not trying to make a masterpiece out of it, but want it to be functional and reasonably period correct.

Re: period correct tunnel rams carbs
 

You can look for any matched pair of 1850's. The only areas where they may be plastic are in the VS diaphragm cover and the arm that pushed on the accelerator pump. No big deal there.

You won't need to run a choke on this set-up. You'll just take those parts, including the choke plate off. Trust me, we can go outside today and my dual quad Malibu will fire right off. It might take just a little bit of pedal to keep the idle up enough so it won't stall, but the important part is that it fires right off. While you are working on the tune, it isn't uncommon to get a back fire every once in a while till it is fully sorted out. When that happens, the choke plates wedge closed and it is a problem.

I personally don't like to tie the VS together. I only want the carb to draw what it needs. I don't want it being biased by the draw of another part of the intake it isn't really contributing to.

As for them not being TR specific carbs,- don't sweat it. There are more details I don't feel like typing right now. Basically a TR carb will have some specific components and calibrations when carbs are originally intended to be run in pairs. The 1850 starts life as a basic, single 4 barell intended to stand on its own. I'd be happy to help you doccument the conversion of these carbs to your TR and show what mods enable them to become TR carbs.

A popular update kit for the carbs to have a secondary metering block kit added. If you get some with this already done, then that helps wiht the tune. I did this on my carbs. Basically a metering block and a longer fuel tube.

Now if you really want to look aggressive, you can look into running the dual feed or center hung float bowls. Some TR give you enough room to run them front to back, but some do not. I was talking to Grumpy not so long ago and he was mentioning that the sideways mounting of the carbs really is best in his eyes. It eliminated several inconsitant problems which he battled while racing. What do you like?

Re: period correct tunnel rams carbs
 

When you get to a certain model, the vac. secondary housing is plastic. I would try to stay with the earlier design. Idle, intermediate and high side air bleeds are not adjustable, so I can't say you need to be looking for a specific carb. I imagine you are going to rebuild any used carb. you get, so as long as they physically match, you can get them dialed in to match from a tuning stand point. And what I mean by that is squirter size and squirter cam profile, jets, etc.

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: YENKO DEUCE REGISTRY</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Hemicolt</div><div class="ubbcode-body">From what I know, there is a dash and a number after the part number for every time there was a change in the carb.
In other words 1850 would be a first edition, 1850-1 would be second edition, etc.
I can't say for sure what -numbers indicate what year span, but I'm sure someone here or at Holley can tell you.
The 600's I'm going to use are 1850-1. They are all metal with the good metal floats. Everyone is pretty much right about the carbs., 660's are just about made for wide open only and very difficult to make work well for the street. </div></div>

Ok, so I should be looking for 1850's, or 1850-1's, with vacuum secondaries. What about choke? Are the 1850 series all manual choke units?

Also, I see some ad's that say '...not dual quad carbs...', what does that mean? Can't you just mount 2 of these 1850 units and connect them together with the throttle linkage and fuel lines? I'm not trying to make a masterpiece out of it, but want it to be functional and reasonably period correct. </div></div>

Re: period correct tunnel rams carbs
 

Ok, thanks. The hunt continues - along with the learning curve!

Re: period correct tunnel rams carbs
 

Picked up a pair of 1850's at Carlisle last Friday with the non-plastic vs setup. All there, including choke setups, etc.... Making a little progress here and there!

Now will need to determine how to cut the hood to clear all this stuff!

Re: period correct tunnel rams carbs
 

I thought I would bring this thread back........I just picked this Edelbrock TR2 tunnel ram up.

Kurt

http://i300.photobucket.com/albums/n...s/100_7246.jpg

http://i300.photobucket.com/albums/n...s/100_7235.jpg

http://i300.photobucket.com/albums/n...s/100_7244.jpg

http://i300.photobucket.com/albums/n...s/100_7248.jpg

http://i300.photobucket.com/albums/n...s/100_7236.jpg

http://i300.photobucket.com/albums/n...s/100_7239.jpg

http://i300.photobucket.com/albums/n...s/100_7243.jpg

http://i300.photobucket.com/albums/n...s/100_7250.jpg

http://i300.photobucket.com/albums/n...s/100_7251.jpg

Re: period correct tunnel rams carbs
 

Hey Kurt I think you can hide a jug of moonshine in that log...

Re: period correct tunnel rams carbs
 

Forgot about that thread....obviously I didn't make a decision last summer. Actually I ended up freshening the engine and transmission and doing some detail work instead of buying wheels.

Re: period correct tunnel rams carbs
 

Anybody ever try installing power valves in a pair of 660 center squirters on a tunnel ram?