Tunnel Ram setup for the street

[ds1]

The 600 carbs are cheap to buy. I pay $30 to $40 each for them. The 450,s I bought off Ebay for $225 them milled the chokes off and reshaped the body down inside the carbs. Next I tapped and plugged the transfer tube for fuel ground the rear fuel bowl pulled the plug out and tapped the rear bowl so both carbs had fuel lines running to them. Last I made the fuel block with one 1/2 inch line coming in and 4 3/8 lines coming out. I am using the Holley intake because it is short and I wanted to keep everything under the hood. The Holly intake is not so much a street intake. That is why I am using the big circle track cam. The Weiand intake is good for the street. The package Summit sells works well. Hot Rod or Car Craft did an article on the weiand set up within the last two years and showed they can work well for the street. Personally I like to keep my carbs as small as possible to save on fuel costs. You can also use a pair of Carter Competition carbs. They make a 500 cfm. I use Carters on my street cars that I want a fair mix of performance and economy. Holleys are gas hogs. To answer your choke question. My rear carb has the mechanical choke parts on it for start up I use it for the fast idle only. This makes it easier to get the engine up to temperature without stalling several times. I can say that a tunnel ram is not as hard to work on and use as they look. This car starts easy and works well. The longer runner intakes work better on the street but will stick up through the hood. Do not know if that is a concern or what you are looking for. As far a the 1850-2 that is just a later model with some changes made to the original design. Try to stay with a matched pair. As for cam I agree with Bentley call a cam maker and get their recommendation. So much information goes into picking a cam, they will steer you in the right direction.

[bbbentley]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ds1</div><div class="ubbcode-body">The 600 carbs are cheap to buy.I pay $30 to $40 each for them.The 450,s I bought off Ebay for $225 them milled the chokes off and reshaped the body down inside the carbs....The Weiand intake is good for the street....(carbs) Try to stay with a matched pair. </div></div>

There is one mod I recall if running vac. secondaries: and that is to run a tube to each diaphram to ensure they are opening at the same time (synchronized). With multi carbs, everything should be synchronized and balanced with ports and certain aspects having a common source or connection. These are really fine points for optimizing a system. For limited street use (car shows-cruising) a lot of this can be skipped for awhile as you can put up with a few things when you are not driving a car everyday. My suggestion of 600, 1850 Holleys was based on the cost and availability...as pointed out by ds1, only $30-$40 is a cheap setup, not best, but cheap and workable. Any intake brand is OK. I just point out that taller longer runners, like found on the early rams from inception (60's) to 70's I always understood as prefferable to the pro-stock type of later years. If I remember, there was a street ram made around the time of the pro street craze of the 80-90's, but since you are making a period correct piece, I still feel the old rams look and work best on that vintage of car.

[bbbentley]

GaryC wrote:&quot;I heard tuning was a bit tricky with 2 carbs. Did you have the covers that were available? I used one, kind of like the bug eye breather type.&quot;
Gary, I have screens similar to the &quot;fly-eye&quot; A-cleaners. Tuning a bit tricky with 2 carbs??? Look what I mess with these days...8 94 Holleys!!

[Plowman]

Sent you a pm.

[volquartsen]

Thanks everyone for the info...Good stuff..Much appreciated..
Bentley, wow bada** coupe!! love the 28-31 coupes..

Bentley you wrote:My suggestion of 600, 1850 Holleys was based on the cost and availability...as pointed out by ds1, only $30-$40 is a cheap setup, not best, but cheap and workable...

Any suggestions on a better carb then the 600? Just curious on your thoughts...Thanks

[bbbentley]

No, been out of &quot;it&quot; too long and do not keep up on technology. I am living in the past and old school is all I know and want to know. A real tunnel ram carb though, is the 660 center squirter by Holley. Thanks.

[GaryC]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: bbbentley</div><div class="ubbcode-body">GaryC wrote:&quot;I heard tuning was a bit tricky with 2 carbs. Did you have the covers that were available? I used one, kind of like the bug eye breather type.&quot;
Gary, I have screens similar to the &quot;fly-eye&quot; A-cleaners. Tuning a bit tricky with 2 carbs??? Look what I mess with these days...8 94 Holleys!!


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My first exposure where the hotrods from the 50's when I was at pre-teen in the early 60's. Always wanted to build one myself until I saw what it takes to do it and the money that goes into a build like that. I bet that car in your pic Bentley is a handful to tune. Would love to go for a ride in that.