Re: period correct tunnel rams carbs
 

For the street I would say,600 v/s Holleys#1850,cheep and does not load-up easy. But you will have to put idle restrictors in. For the track 660,s center[4]squirters, have more power I would go with that. You will have to see if idle restrictors are needed,but I would. So you can do what you want but I hope this helps. *Paul

Re: period correct tunnel rams carbs
 

What about the Holley 450cfm single squirt mechanical secondary tunnel ram carbs? I've heard good things about them. List number is 9776.

Re: period correct tunnel rams carbs
 

I'm following Plowman & PXTX's lead on this one; they have it figured out.

Should I be searching swap meets for the old versions with the better material, or.......

Re: period correct tunnel rams carbs
 

I've run 390's and 450's. Even my stock L79 likes pair of 600 cfm 1850 carb over the little guys.

Had 1850's on a 13:1 350, but that was faster with a pair of 660's but lacked the street manners of the 600 VS.

Re: period correct tunnel rams carbs
 

The real question is what ignition are you gonna run?

It would be cool to find a set of all metal 1850's with matching patina if you can

Re: period correct tunnel rams carbs
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Fast67VelleN2O</div><div class="ubbcode-body">What about the Holley 450cfm single squirt mechanical secondary tunnel ram carbs? I've heard good things about them. List number is 9776. </div></div> Yes 450cfm,NO power,and they are hard to tune. The number &quot;450&quot;sounds good but it will take all season and then sum to tune the Two on a Tunnel-ram.

Re: period correct tunnel rams carbs
 

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.

Re: period correct tunnel rams carbs
 

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.

Re: period correct tunnel rams carbs
 

These might be a good lead.

http://allentown.craigslist.org/pts/2761365647.html

Re: period correct tunnel rams
 

The scoops and the manifold were both made by Ralph Ridgeway, owner of the blue Ridge Runner Camaro pictured. Both are extremely rare today.