period correct tunnel rams

[brent396]

Another pic of that crazy scoop its a little differant in the front

[EZ Nova]

Sorry, I was Joe Mondello that dies. That was a mistake and sorry to anyone that was shocked by that statement.

[EZ Nova]

Ok, here's the info from speedtalk and Joe:

&quot;I worked at Edelbrock back in the good old days, When they made that manifold(tr-2x) <span style="font-weight: bold">the first ones had the good port/badd port layout with smaller ports on the good runner in the heads,</span> Anyway, they only made one run of those good manifolds, then they changed the design so all the runners were the same. The good one ( only 50 were made) were 30 Hp better than any other tunnel rams they have ever made. I take it the one you have is the one with all the runners the same size.. On an 900 HP 540 I did, when I went from one1150 carb to the tunnelram with two 1050 carbs, the engine PICKEDUP 100 HP with NO other changes. Back in 1971, It was worth 70 HP on a good 454(750 HP back then)

JOE SHERMAN RACING ENGINES


Check out this thread over there as there's alot of info on old tunnel rams:

http://speedtalk.com/forum/viewtopic...t=tr2x#p213133

Just some info to help you guys out!

[Starship]

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

[TheNovaMan]

What carbs are you going to get? 660 center squirters?

[Plowman]

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

[Fast67VelleN2O]

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

[Plowman]

<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.

[YENKO DEUCE REGISTRY]

I'm following Plowman &amp; 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.......

[PxTx]

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.