single carb tunnel ram??

[Running_on_Empty]

I've got a 468 chevy I was wonder what the advantages or disadvantages to a single carb tunnel ram would be, and if I ran one what size carb I would want to sit atop it. thanks.
049 heads with 2.14 and 1.88's

[77charger]

Might only have the cool look factor.
get a good single carb manifold instead or get one more carb to add up top.

[Running_on_Empty]

yea, thats what I thought, I have a fiberglass scoop.....so I figured if I had the poor man's blower...I might as well have the poor man's tunnel ram. Is there anything wrong with them though.....I mean would I gain a lot more from just a regualr manifold

[charitycase]

A Hat is always cool& effeiciant on a ram.Alot easier to tune.Just a thought.

[Running_on_Empty]

what do you mean by hat?

[469 the coyote]

A injecter hat. I would put a high rise single carb manifold on it. If you want to run a bunch of RPM go with the tunnel with a single carb.

[Jordy]

I ran one for a couple seasons as it came on the boat. The big problem was, when I started tuning up the boat for more speed by going through the bottom end and changing out the flat top blower pistons for some with a dome and a little more compression, I couldn't ever get rid of the lean miss that would come on the top end. Ended up wiping out the corner pistons due to detonation.
Did look cool though. :D

[Running_on_Empty]

I have a torker 2 for it right now. I herd air gap intakes were ideal. The single carb tunnel ram does look cool.

[Rexone]

A good single carb manifold or a dual carb tunnel ram would be a better choice. The single carb tunnel rams always had fuel distribution problems just based off their design of center and end cylinders not getting equal distribution. Not good performers compared to properly setup alternatives above has been my experience.

[ol guy]

Here would be a reply from someone that ran a single top tunnel for a while. Stop and think of the plenum and the air verses feul. They will work and were designed for 7 k plus rpm. If you think of off idle or low rpm romp you have alot of air in the plenum and a lean condition on the feul side. I don't know the motor specs but if you want to stay with the single carb deal then run a 850 carb and go VERY and I repeat VERY large on the primary and secondary squirters. Then jet as per your'e plug readings at W.O.T. Which would mean take a hard pass after you get a good leave and remove the initial bog then shut down a.s.a.p. and read the plugs. That will tell you if you can jet to feed the beast or go to a larger carb. The last thing you want to do is introduce more air at cruise or idle to already large volume of air. 2 cents with change. Mark

[CircleJerk]

On my circle boat, I run a low Weind tunnel on 049s, a 468 with 12-1 and a mild Z33 Isky. boy does this thing have torque. I was having uneven plug readings but it wasnt the manifold, it was restrictive exhaust and wrong jetting. When I installed Lemon headers and now 180s, my plug color changed for the good.
Anyone remember Arlen Curtis blowing away his class drag boat record with a similar intake?? Check the picture in 'How to Hot Rod a Big Block Chevrolet' !
I run a model 4150- 830cfm with an adapter throttle plate to transfer to dominator bolt pattern which also features a trick multi venturi spacer right below to aid fuel distribution, I think. Stagger jetting also had a big effect, left front primary is 93, right is 91, rear secondarys are 92 at 2000 feet elevation. I dont lean on the timing since it is 36 total. Hope this helps and PM me anytime and maybe we can compare further.
Why do I run this weird stuff? Cause I like a challenge and refuse to conform (want proof, I race an Aquacraft, all 2400Lbs)! Or not a copy cat, or am cheap, or stupid, or like change, or like to live in the past, or all of the above! jErKizoid out and still proud of our Nostalgia family!

[CircleJerk]

Here would be a reply from someone that ran a single top tunnel for a while. Stop and think of the plenum and the air verses feul. They will work and were designed for 7 k plus rpm. If you think of off idle or low rpm romp you have alot of air in the plenum and a lean condition on the feul side. I don't know the motor specs but if you want to stay with the single carb deal then run a 850 carb and go VERY and I repeat VERY large on the primary and secondary squirters. Then jet as per your'e plug readings at W.O.T. Which would mean take a hard pass after you get a good leave and remove the initial bog then shut down a.s.a.p. and read the plugs. That will tell you if you can jet to feed the beast or go to a larger carb. The last thing you want to do is introduce more air at cruise or idle to already large volume of air. 2 cents with change. Mark
Very interesting and I also thought i would sacrifice bottom end with better results at high rrrs but I only rev to 6800 and there seems to be NO weakness from idle on up. I agree with the shooters but the 31s & 35s seem to be sufficient, what do you think? It's scarry fast with no dead spots. OH, four corner idle and annular boosters in the comp series probably also helps the bottom. And just maybe the cam is holding a higher vac reading instead of the monsters most guys use so the pumps keep it rich enough. It runs too good to be that far off and a stupid combo! Oh forgot, the throttle plates are also larger diameter, that of a 950.

[mostly crue]

The only good thing that tunnel ram would be good for is a really trick looking box anchor.

[ol guy]

Again the single top will work and cover a very wide RPM range. The big deal is the tune. At first in design by Vic Edelbrock (OR WAS IT OFENHAUSER) the consept was a high end manifold. Go with it and always keep in mind the air mass vs the feul mass. The best part is the knowledge you will pick on doing the dial in. Best of luck. MARK.

[GofastRacer]

The only good thing that tunnel ram would be good for is a really trick looking box anchor.
:D :D :D

[pops454]

NO!!! your wrong the chicks think they look cool...lol, I had a TR2X with 2-660's on a L88 back in 69 and it didn't work as well as a high rise with a Holly 1'100.......... :confused:

[CircleJerk]

I've got a 468 chevy I was wonder what the advantages or disadvantages to a single carb tunnel ram would be, and if I ran one what size carb I would want to sit atop it. thanks.
049 heads with 2.14 and 1.88's
A small Holley Dominator is what Arlen ran, I have never tried the Domi and have an 830 on. If you have the manifold, try it. As you can tell, I am quite happy with mine and it's not like we should worry about hood clearance or some jerks always losing their boat anchors!