Which Carb?

[KULTULZ]

Tim,

I thought I promised a source for the dash-pot and bracket and now I can't find the original post.

Remember, this is an exact repro and will be expensive.

You should be able to find the correct dash-pot (C1AZ 9B549-A) on EvilBay and the brackets (B8AZ 9B550-A) were almost universal.

http://www.championmustang.com/

The purpose of the dash-pot was to allow the engine to return to idle slowly while slowing/coming to a stop as the torque converter would choke the engine down possibly causing a stall.

[57 Ford Kustom]

Thanks a bunch you have been a huge help! one more question, I just bought a weiand intake for my 351w, once I recieved it I realized that it is listed as a 1500-6800 rpm range. With my 4100 480 cfm carb, will I have issues?
Thanks,
Tim

[KULTULZ]

That is a HI-RPM intake (very little low end torque). Mostly it depends on how the engine has been built but the carb (1.08) will have a difficult time keeping up with the intake @ upper RPM's.

Is it a single or dual plane intake? Can you post a model #?

[57 Ford Kustom]

It is a dual plain, weiand # 8023, The only one that I could find from them for a 351W
Thanks for all the Help!
Tim

[Tom S]

I really can't say if that is a high RPM manifold or not.  I just don't know & ain't gonna argue the point.
Look what it says under the summit link.  "... for bottom-end and mid-range power..."
Jegs says idle to 6000 RPM.
??
After I finally got Summit's CFM calculator to open up I got this for 6000 RPM. Your 480 carb ain't far off that 517 number so you might be fine for street use.  



http://www.summitracing.com/expertadvice/popup.aspx?Control=CFMCalculator

Here is another CFM calculator.   It agrees with the Summit one.
http://www.gtsparkplugs.com/CarbCFMCalc.html
For a 351 'stock' street engine, (VE 0.85), & 5000 RPM instead of 6000 it shows 432 CFM.
At 6000 RPM it also shows 517.

[KULTULZ]

I really can't say if that is a high RPM manifold or not.  I just don't know & ain't gonna argue the point.

Look what it says under the summit link.  "... for bottom-end and mid-range power..."

Jegs says idle to 6000 RPM.

I do not wish to argue in any fashion either. I should have included in my post (IMO) (In My Opinion).

WEIAND
Stealth? Intake Manifold
PART #: 8023

Features

    High Rise Dual Plane Design
    Square Carburetor Mounting Flange
    No EGR provisions
    Power band: 1500-6800 RPM
    Height: Front 4.37", Rear 5.06"
    Port Size: 1.82? height 1.05" width

SOURCE- http://www.holley.com/8023.asp

EDELBROCK
PERFORMER 351W (idle-5500 rpm)
Ford 351 Windsor V8
Designed for street 351 c.i.d. Ford Windsor V8s

PERFORMER? MANIFOLDS (Idle to 5500 rpm)
Performer manifolds are dual-plane, low-rise intake manifolds with a 180? firing order and patented runner design that you won't find in other brands. This patented design greatly improves torque over a wide rpm range for excellent throttle response, especially off-idle through the mid-range. Performers are ideal for passenger cars, trucks, 4x4s, tow vehicles and RVs. There are EGR and non-EGR versions available for most domestic V8

SOURCE- EDELBROCK Webpage- http://www.edelbrock.com/automotive_new/mc/manifolds/ford/performer-289.shtml

The intake chosen is for a modified street engine. It will not flow properly until 1500 RPM. Therefore it will have poor street characteristics. I don't know how much the engine has been modified, but I doubt it will ever see 6800 RPM.

The PERFOMER (IMO) would have been better choice for the engine. Carburetion does not enter into the equation until very high RPM at which point the 1.08 will not flow enough.

[gasman826]

I had a Stealth on my 460 with plenty of low end torque.  I think Weiand is just protecting themselves.  Just like the high end RPM...6800 RPMs with power from a dual plane manifold is optimistic at best if not just plain BS.  If an engine was built to have power and torque at 6800 RPMs, it would be quite the engine and a dual plane manifold would hold it back.  For the street and the money already spent...run what you got!

[57 Ford Kustom]

Guy's,
   As usual you guy's are the greatest ! Thanks for all your input, I need the help!

Thanks agian,
Tim

[KULTULZ]

I had a Stealth on my 460 with plenty of low end torque.  I think Weiand is just protecting themselves. 

Just like the high end RPM...6800 RPMs with power from a dual plane manifold is optimistic at best if not just plain BS.

If an engine was built to have power and torque at 6800 RPMs, it would be quite the engine and a dual plane manifold would hold it back.  For the street and the money already spent...run what you got!

A 460 is going to have plenty of low end, regardless. So you think they are false advertising and offering products with no engineering or design testing? FORD ran dual planes on NASCAR how long?

The whole point is, his intake will produce lower torque @ low RPM. That is a fact and the way the intake is advertised.

And he now has to run what he brung. All depends on how the engine has been built.

[57 Ford Kustom]

I will probably send it back for a performer because I have no idea if Tom had modified it or not.
Thanks,
Tim

[KULTULZ]

I will probably send it back for a performer because I have no idea if Tom had modified it or not.

Thanks,

Tim

Tim,

Don't replace it just on my comments. I am only exchanging conversation.

Now, (IMO), I think you will be better served with the performer for just a mild street engine. If he had built the engine as a thumper, you would know on the first fire-up.

Why did you swap the 312 by the way?

[lowrider]

Aren't dual plane manifolds for low end/street use & single plane manifolds used for high rpm engines?

[KULTULZ]

Here you go-

http://www.popularhotrodding.com/enginemasters/articles/hardcore/0601em_intake/viewall.html

[57 Ford Kustom]

Here you go-

http://www.popularhotrodding.com/enginemasters/articles/hardcore/0601em_intake/viewall.html

Thanks for the link, I think I will still send it back. It's easier than modifing the engine to match the intake!
Thanks
Tim

[57 Ford Kustom]

Hey Guy's,
   I'm going to purchase a performer cam from Edelbrock, to go with the intake. I've never tackled a project like this, any suggestions?
Thanks
Tim