i came into a lil money and seriously want to add a tunnel ram. i did some searches and everyone evene the cataloges say not for low end torgue. i am aware of this but my cam is rated from idle to 5500 rpm. the tunnel ram i was looking at is like 2800-8800 or something like that. so my ? is will my cam match up since it falls into part of that rpm limit and will i have poor acceleration and crap. i want to be able to take this to school every now and then and show off. not a daily driver. but i want to know if i can actually drive it around town and actualy make it perform. maybe too much carb i was thinkin like two 450's from holley

 

All tunnel rams are not created equal. Some are full out race pieces..but some have reletivly small runners and are quite streetable. Look at the Summit Combo with dual 450 Holleys, part number SUM-CWNC303.

It probably wouldn't hurt to put in a healthy cam to match tho.

 

hey jester,
i already was looking at that one but i have a cam that would touch that rpm range but not fully. see my ? there. would i be okay with a cam that touches the rpm range but only half of it?

 

I think if you're look'n to go to a tunnel ram and dual carbs you should at least step up to a healthy cam too. It's not gonna blow up or anything if you don't, but it won't be up to it's potential either.

 

with a new cam in mind, preferably edelbrock since i spent a fortuen on the special timing chain, what else will i need with the tunnel ram setup. i can think of the throttle linkages and a crabcake like distributer to fit under it like the one in jegs. what else will i need? o yeah thanks alot jester u r the man!i luv this site but so far u have to be the fastest resoponder. thanks alot man. it sounds like u care.

 

hehehe thanks man.

Special Edelbrock only timing chain? Hate to tell you since it cost a fortune..but there is no such thing. What ever kind of engine/timing chain you have, you should be able to use a cam from any manufacturer. Don't use an Edelcrap ones either, they don't even make thier own cams. They buy them from a really cheapie cam maker and rebox them.

as far as what else you'll need with the tunnel ram, you'll have to ask the manufacturer of whatever intake you choose. Some will have specific extras...some won't, some will include it as a kit.

 

My tunnel ram choice would be Weiand (what's included in the 'Summit Combo'), but the Edelbrock Street Tunnel ram seems to also be a good choice.

As Jester said, not all Tunnel rams are the same. A full race piece like the Holley Pro Dominator works from 6500-10000, and that'd obviously be almost useless on the street. However, using either of the above manifolds, you can gain up to 40 lb-ft of torque on the bottom end. A well tuned tunnel ram with the right carbs on it can average a good 10-20 hp & tq increase over a 4 barrel setup. Note the well tuned part, however. Tunnel rams require special tuning; some carb manufacturers produce specifically tuned tunnel ram carbs. You better know what you're doing.

You can get some slick throttle linkage kits that work nice, but I haven't seen one that would allow easy 700-r4 cable hookup. You'll probably be looking at some fabrication. There's no way this would be a bolt on.

Also, I hope you are really friendly with your local law enforcement because nothing says "Pull me over for obstructed vision" like a tunnnel ram or supercharger sticking out through the hood.

As always, the above is IMHO, and your mileage may vary.

-5

 

well i was going to do the th 350 swap instead of the 700r4 and found a throttle linkage for it so.... antything else special that i would need?

 

Street tunnel rams can have quite good low end response.
The secret is small cfm carbs. The total of the two carbs'
airflow capacity should not exeed 900cfm.
A pair of 390 cfm holley carbs would work nicely on a mild 350.

Try to use a 2100 to 2800 stall converter.

 

hey thanx fbird88. for the distributor will the hei fit in the summit combo cuz it looks like enough room compared to others. otherwise i will have to get the crab cake style one. other than that any good linkages or anything?

 

THE HEI SETUP WILL NOT FIT A WEIAND TUNNEL RAM. tHE REASON THE I KNOW THISIS BECAUSE I TRYED AND IT JUST WOULDENT FIT

 

First of all a car mag (can't remembe which one right now) did a comparo between several tunnel ram set ups from several companies.The Summit set up with two holley 390's made the most power on a 400 small block I believe.Good part is it only runs around 350 with carbs and intake!The trick to a well running street tunnel ram is a healthy pump shot
As for the distributer clearance... check out

http://www.davessmallbodyheis.com/

He builds custom hei distributers from point style units.

 

what do u mean by a healthy pump shot. ur not talkin no2 are u? cuz i dont want that. just a tunnel ram to deliver alot more power than what i have. i am hopin by the end of my build with a new cam head work and the tunnel ram i will be pushing 350-400 hp

 

By pump shot I'm reffering to Accelerator pump.Try going with the 50cc pump kit on the primary carb.It helps to compensate for the delay of vacuum signal caused by the long intake runners.

 

I know this is an old topic. But have a new question! Looking at dropping a 255hp 350 in my engine bay sometime this summer. The question is.....go tunnel ram or single carb? Which will make more power?

Brandon

 

well since my post came back up i guess i will ask another question while i am here. should i stay with the team g intake for my new 383 or should i go with the tunnel ram idea i originally wanted. the money i was gonna use twoard the tunnel ram went to the 383 so should i save 300 bucks and put it towards my xmas gift from my dad or should i stick with the team g? i am gonna buy a scoop to put on the car so clearance wont be an issue. ram or teamg ? that is the question. and jester i did step up to a healthier cam.