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Intake Manifold and Carburetor Choice

28K views 170 replies 30 participants last post by  Woodchuck  
#1 ·
I am going to replace my stock Autolite 2100 and stock intake manifold. I have a stock 289 C code, and need specific advice. I am going to attempt this myself, and I would like opinions on what combinations meet my criteria. In terms of importance, here are the most to least important factors. I want quality parts that lead to an easy starting car, a reliable driver,ease of installation of parts, reasonable fuel consumption, increased performance, and good value. I am willing to pay more for quality and reliability.

I am interested in Edlebrock components, but am willing to consider others. I would like to have opinions on the Edelbrock Performer vs Performer RPM vs Weiand Stealth intake manifolds. Also, any opinions about the 500 CFM Edelbrock carburetor vs the 500 CFM Summit carburetor. I know there are many, many opinions, help me tie this down.
 
#145 ·
At this point I am putting it back together as you can see. A few issues at this point maybe you can help me solve.

First, where to cut the metal fuel line to run a rubber one to the barbed in of the fuel line that goes to the carburetor? Where is the preferred cut to make it easy and maintain as much metal line as possible? Or, since the two lines look like different diameters, do I need to run a new line all the way to the fuel pump?

Second, is there a preferred method for the pcv line or just run it from the carburetor to the valve cover? Looks like a much smaller hose than before, is this an issue?

Lastly,any ideas on running the metal line from the distributor to the carburetor since the new carburetor does not have a direct fit connection?

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#146 ·
Your original fuel line is 5/16" and the new carb probably has a 3/8" fitting. I can never find brass fittings online so I have to go to the auto parts and look in their paper catalog for the fitting I need. You need a 90* fitting that has a female inverted flare to screw onto your metal fuel line and then it will have a 3/8" hose barb to attach to your carb. You can bend your metal line so that you only need a 2" piece of rubber hose to connect the 2 barbs.
You need another barb fitting that has a male inverted flare to screw into the distributor and then a run a rubber hose to the carb.
Is that brass nipple on the base of the carb the PCV port? If your existing PCV hose is too large to fit on that nipple you can buy barbed hose connectors that have a different size barb on each end. Connect the large end to your existing PCV line and then use a short piece of smaller hose to connect the smaller end to the carb.
 
#148 ·
So, if I am understanding correctly, use this fuel line for a 1966. This will connect to the fuel pump and has the connection fitting on one end.


And the other end will attach to this:


Then, it is easy to attach both barbs
 
#149 ·
Correct, that steel line should run in front of the distributor and end close enough that you attach to the barb with a small section of hose. You may have to tweak the line some to match with the edlebrock, I would recommend the steel line versus stainless as it would be easier to tweak.


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#151 ·
I am hoping someone has this exact setup and can provide a photo of how this linkage goes back together. I was told by Edelbrock when ordering the manifold I needed an adapter, which I purchased, but not sure how it all fits back together. It looks like the holes in the adapter plate match the holes in the manifold, and it is for the kick down function. I am not sure I have all the parts I need, I don't see any new springs in my carburetor kit. Also, where is the best and/or correct method to attach the electric choke lines?

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#152 ·
Did more research on the forum, and seems like there are many opinions on where to hook up the power for the electic choke. The stator on the alternator seem to be the easy method even though Edelbrock says not to do it this way. Many have said Ford did this for many, many years with no issues and it is just a covering statement from Edelbrock. Connecting to the alternator sure seems like the easy route. What are the thoughts, and where to grond it, any specific recommendations?
 
#154 ·
Thanks for all the assistance so far. Anyone have a picture or can tell me how to connect the throttle rod to the carburetor or what part number to purchase and what return spring. I just set the rod in a spot that looked correct. Also, any idea on the kick down linkage/adapter? These are all the parts that came with the carburetor.

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#155 ·
Latest update: got the fuel line connected, still needing to figure out the throttle rod and kick down linkage interaction. Also need to connect the electric choke. I was able to connect the kick down linkage to the manifold with supplied hardware, a bit of a tight fit with the vacuum connection on the manifold but should work. The bend in the accelerator rod does not make contact with the kick down mechanism at wide open throttle and thus i will need a work around. With the kick down connected to the manifold, it appears to me that it will be easier to find some work around for the accelerator rod rather than the kick down linkage. I wonder how hard it would be to find stock rod, bend it to the right shape, and then have the threads machined on the end that attaches to the accelerator linkage near the firewall? Anyone done this or bought an aftermarket accelerator rod?


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#156 ·
I have. I've used one that had heim joints and fit into the 'big' hole in the accelerator linkage on the carb. I think it might have been from S Drake and I got it through CJ Pony Parts. It worked well - but a little blue loctite on the ends of the heim joint is recommended. Mine worked it's way loose on a shakedown cruise and I had to drift to the side and reset.

 
#160 ·
Exactly, that is the issue. The stock linkage accelerator rod does not engage the transmission kick down lever at wide open throttle. The lateral portion of the accelerator rod does not come far enough back when the accelerator rod is fully open so it does not make contact with the kick down mechanism; thus no engagement of the kick down mechanism. I know there might be some adjustment on the accelerator rod near the kick down, but moving the accelerator rod backwards begins to affect the carburetor as if you are applying throttle. Basically, it looks like the rod just needs to be longer with the "Z bend" at the right location.

I am having a conceptual problem thinking if I could just try to straighten the rod then re-bend it so it makes contact with the kick down mechanism, but not sure the rod is long enough. I can't believe Edelbrock has not designed a solution to this or there is not an aftermarket rod with the bend in the right place. If I were a machinist looks like it might be pretty quick. Maybe someone should go into business making this part, but maybe not that many in existence needing the part to make it viable.
 
#162 ·
In responding to your PM. You must be good at search to dig up my past! I bought a universal straight racing throttle cable setup from Summit and added the bends, shortened and rethreaded the normal threaded end, don't cut off the reverse threaded end! I have moved on to a cable throttle t5z and multi port fuel injection so if you want my old linkage send me another PM and you can have it for whatever a USPS flat rate box goes for these days.

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#164 ·
Update: It is all put back together so lets hope it starts. Not happy with the looks of the messy spark plug wire set up, and not happy with the purchase. NKG website and box both state the wires are numbered, nope, not unless I am totally blind. Additionally, all but two of the wires are the same length, maybe that is standard, don't know. I am ready to attempt to start it, but a little apprehensive. If anyone sees anything that looks off, chime in.

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#165 ·
Oil is most important. The transmission kick down linkage looks familiar.
 
#171 ·
Update, it starts, but seems difficult, and seems tight. I put this on another conversation in case everyone was tired of this post. Any thoughts, timing etc?
Too much initial timing. Rotate the distributor CCW a tad. Keep going until it cranks full speed.

why not the 600? why not a holley or edelbrock if you dont mind me asking?
Why the 500? Because even at a fairly high VE of 90% a bored 289 (294 ci) and a "redline" of 6,500 rpm only 497.66 cfm is required. Less tuning and better throttle response than plopping on a 600. Why the Summit and not a Holley or Edelbrock? Well, I'm not a particular fan of air-valve-secondary carbs for a start and since the Summit carb is almost an exact clone of the Holley 4010, which is no longer produced, I guess you could say it's the closest thing I can get to that carb. Note the Holley 4010 was Holley's attempt to produce a carburetor with a combination of the positive attributes of a Holley 41xx series and an Autolite 4100. Realistically speaking, I'd install an Autolite 4100 because I can re-tune it versus the average Joe who isn't going to go after their carburetor with taps, solder and drill bits....