tunnel ram carb choices

Posted By: 65dodgebob

tunnel ram carb choices - 04/02/10 03:14 AM

what would be good carb choices for tunnel ram? 65 coronet, built 383 (440 crank), solid cam, steep gears, hi stall converter, some limited street use( no hiway).definitely some track time. my choices:pair of 660 holley center squirts,500 eddys, 600 holleys d.p.s or vacs.? thanks.

Posted By: Dragula

Re: tunnel ram carb choices - 04/02/10 03:21 AM

Pair of QF750 annular TR carbs hands down....Or....this.

Posted By: 65dodgebob

Re: tunnel ram carb choices - 04/02/10 03:26 AM

way cool!

Posted By: joedust451

Re: tunnel ram carb choices - 04/02/10 06:33 AM

The simpliest & cheapest is a pare of 600 1850 holleys, i'm sure the 600 eddys would work fine also, i've only ran the 600 vs. holleys with a D shaped weiand street ram with great success on 2 seperate BBs.

Posted By: Dragula

Re: tunnel ram carb choices - 04/02/10 12:51 PM

Quote:

The simpliest & cheapest is a pare of 600 1850 holleys, i'm sure the 600 eddys would work fine also, i've only ran the 600 vs. holleys with a D shaped weiand street ram with great success on 2 seperate BBs.

That will run out of steam about middle of second gear with his set-up.....I believe in carbing it right if your going to do it, why waste the money otherwise.

Call quick fuel as I mentioned above and talk it over with them. I have one of those on my 360, and it is awesome. I was going to do a pair of them o my TR, but figured the EFI would work just as good or better.

A pair of these on a tunnel ram is just awesome, I guess most people don't even know what annular boosters are for or why you would use them in this application.

Posted By: Mr.Yuck

Re: tunnel ram carb choices - 04/02/10 01:43 PM

I'd try 2x 650 HP, #4150. You might even get away w/ 2 750's which can be found cheap.

Posted By: Mr.Yuck

Re: tunnel ram carb choices - 04/02/10 01:44 PM

Quote:

what would be good carb choices for tunnel ram? 65 coronet, built 383 (440 crank), solid cam, steep gears, hi stall converter, some limited street use( no hiway).definitely some track time. my choices:pair of 660 holley center squirts,500 eddys, 600 holleys d.p.s or vacs.? thanks.

ohh in that case the 660's and mechanical 2ndaries

Posted By: joedust451

Re: tunnel ram carb choices - 04/02/10 07:36 PM

Quote:

Quote:

The simpliest & cheapest is a pare of 600 1850 holleys, i'm sure the 600 eddys would work fine also, i've only ran the 600 vs. holleys with a D shaped weiand street ram with great success on 2 seperate BBs.

That will run out of steam about middle of second gear with his set-up.....I believe in carbing it right if your going to do it, why waste the money otherwise.

Call quick fuel as I mentioned above and talk it over with them. I have one of those on my 360, and it is awesome. I was going to do a pair of them o my TR, but figured the EFI would work just as good or better.

A pair of these on a tunnel ram is just awesome, I guess most people don't even know what annular boosters are for or why you would use them in this application.

I know from 1st. hand this combo works, to say it'll run out of steam is a myth, but if you want to drop down a grand for the fancy stuff, thats cool too, all i was out was 275.00 total, I never said running larger carbs wouldn't work better, so its not fare to say running 600 1850s will run out of steam, because it won't, tell that to the guy who owns my old duster, he's a member here

Posted By: Dougsmopars

Re: tunnel ram carb choices - 04/02/10 07:58 PM

2 660's will be more then enough. Great tunnel ram carbs. No need for fancy aftermarket holley carbs when you can get the real thing. I hear more complaints about the aftermarket holleys like Damon, Barry Grant ect ect. Buy real holleys and drive it like you stole it.

Posted By: 440charger500

Re: tunnel ram carb choices - 04/05/10 12:33 AM

I'm getting ready to setup my tunnel ram next week with a pair of holley 600cfm 1850 carbs we'll see how it works.

Posted By: Dragula

Re: tunnel ram carb choices - 04/05/10 02:44 AM

Quote:

2 660's will be more then enough. Great tunnel ram carbs. No need for fancy aftermarket holley carbs when you can get the real thing. I hear more complaints about the aftermarket holleys like Damon, Barry Grant ect ect. Buy real holleys and drive it like you stole it.

I never said to buy a demon pos....But hey, what do I know? I just some dumb guy that didn't want to use 30+ year old crap on one of my engines anyways. I was told a 750dp was to way too much for a 360, so I put an 800dp on it, and man does it run. I didn't want to be happy with it, I wanted it to be fast. Been around cars a while now, and i'm pretty sure there have been a few improvements in the past decade or so, but hey, to each there own. Runs ok is ok, for most....

Posted By: joedust451

Re: tunnel ram carb choices - 04/05/10 06:17 AM

Quote:

Quote:

2 660's will be more then enough. Great tunnel ram carbs. No need for fancy aftermarket holley carbs when you can get the real thing. I hear more complaints about the aftermarket holleys like Damon, Barry Grant ect ect. Buy real holleys and drive it like you stole it.

I never said to buy a demon pos....But hey, what do I know? I just some dumb guy that didn't want to use 30+ year old crap on one of my engines anyways. I was told a 750dp was to way too much for a 360, so I put an 800dp on it, and man does it run. I didn't want to be happy with it, I wanted it to be fast. Been around cars a while now, and i'm pretty sure there have been a few improvements in the past decade or so, but hey, to each there own. Runs ok is ok, for most....

Don't get in a huffy because others give there input, thats why this is a board & he is looking for ideas, you make it sound like your idea is the "only" way to go, well its not, i personally defended myself when you targeted my responce, which ever way he chooses "he chooses", that simple, most of us don't have big $$$$$ to throw around, so calm down

Posted By: DaytonaTurbo

Re: tunnel ram carb choices - 04/05/10 04:11 PM

I would probably run a pair of holley 650 vac secondary carbs. But for a mostly race-only engine a pair of 650 double pumpers could work. You didn't say exactly what your hp goal is or how high you want to rev it. If you need more, a pair of 750 vac holleys would work well too I bet.

Posted By: AndyF

Re: tunnel ram carb choices - 04/05/10 05:36 PM

I'd put a pair of 500 cfm Edelbrock carbs on there. That is what I've used a few times in the past and they are much easier to dial in than a pair of 1850 carbs. The 1850 carbs are almost impossible to tune unless you're willing to spend a bunch of time with drills and epoxy.

The Edelbrock carbs allow you to tune with primary and secondary jets plus the metering rod gives you control over main circuit and power enrichment.

Posted By: joedust451

Re: tunnel ram carb choices - 04/05/10 07:53 PM

Quote:

The 1850 carbs are almost impossible to tune unless you're willing to spend a bunch of time with drills and epoxy.

Andy, not to start a debate, but i've used 1850s on 2 of my builds, both being -2 & -3s, one being my old Duster with the 451, & the other on a basically mild low comp. 440 in my D-100, on both accations it wasn't hard dialing in those carbs, once they were tinkered a bit all was spot on & never gave me any fits, even on the street, The duster still has this set-up after 5yrs. & the other owner loves them, & he's has never had to tweek them any more, not saying the eddys won't work good also, i'm sure they will.

Posted By: AndyF

Re: tunnel ram carb choices - 04/05/10 09:01 PM

That is great that they worked for you but I don't recommend them to the average guy because there really isn't much adjustment capability on them. If they aren't correct out of the box it is hard to dial them in. No jets in the idle circuit, air bleeds can't be changed, no secondary jets, etc. If they come out of the box close enough then great, if not then what? A good set of adjustable Holley carbs is super expensive.

Posted By: 440charger500

Re: tunnel ram carb choices - 04/07/10 04:42 AM

Be sure keep us posted on your tunnel ram setup I'm very intrested in you progress.

Posted By: Dragula

Re: tunnel ram carb choices - 04/07/10 09:52 AM

Quote:

Quote:

The 1850 carbs are almost impossible to tune unless you're willing to spend a bunch of time with drills and epoxy.

Andy, not to start a debate, but i've used 1850s on 2 of my builds, both being -2 & -3s, one being my old Duster with the 451, & the other on a basically mild low comp. 440 in my D-100, on both accations it wasn't hard dialing in those carbs, once they were tinkered a bit all was spot on & never gave me any fits, even on the street, The duster still has this set-up after 5yrs. & the other owner loves them, & he's has never had to tweek them any more, not saying the eddys won't work good also, i'm sure they will.

That's whats funny about your response, and your opinion. Those are not very good carbs for that combo. Most of us that replied, HAVE, tried more than one combination on a tunnel ram. Call a custom carb shop, and do it right, and do it once. Get the right carbs already set up on a dyno and calibrated to your fuel flow needs.

The newer carbs will also have a lot more range of adjustments with replaceable air bleeds and boosters which can be tailored to your specific application. My personal preference is to get annular carbs anytime they are available for my applications. They are phenominally responsive, and help with milder combinations.

Frustration in the set-up and tuning of those is not worth it. Tunnel ram carbs take a lot of time to sort out, and if you pick the wrong carbs to start with, lots of time followed by frustration. Box stock carbs rarely work on Mopars. The only one I have ever liked out of the box that was right on for a mopar is the 8896 Holley dominator on a mild race prepped 440 or 451 with around a 590 cam.

Posted By: TechAtBG

Re: tunnel ram carb choices - 04/07/10 08:34 PM

As several have mentioned being able to tune and adjust is real important with this kind of application and although the single line carbs can be tuned to work they generally take more time and may have to be modified in the end.

Other issues that haven't ben mentioned in regards to a single line carburetor is their orientation with them being front to back as opposed to sitting sideways. With the space constraints most will not have secondary metering blocks where you can change the jetting but also this means the carbs have to come off anytime changes are made.

We prefer to use a sideways mounted carburetor for tunnel ram applications with front and rear metering blocks. With them being mounted sideways jet changes are as simple as pulling the exposed bowls off. Also going to the center hung bowls allows you to use angle cut floats which will help in float and needle seat control depending on how hard the car launches.A carburetor that is specifically calibrated for tunnel ram use will also have the transfer slots restricted as well so there is not an excess of fuel as both carburetors sweep the slot.

Up until recently we only offered tunnel ram calibrated carburetors in our more expensive Race Demon series but with a lot of guys going to milder applications and tunnel rams we now make them in the mighty series as well which is good up to .260@ .050 on the cam duration.

Not really enough information posted to make a definite recommendation on size but generically it would fall somewhere in the 575-650 range and there could be more then one size that would work depending on which area is most important to you.

Posted By: 440charger500

Re: tunnel ram carb choices - 04/28/10 04:23 AM

I've been racing a little with my new Tunnel ram setup. I'm running the holley 1850 600cfm vac carbs. They work ok for drag racing, I think there best for street cruising. I think I'm going to put a pair of Quick Fuel 650 mech carbs on.