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This is the simple way to kook up a dual line Holley carb on a 289, 302, 5.0 or 351.
Tap the driver side fuel inlet, normally supplied as an unthreaded bore. Tap for 7/8-20. Use a 3/16” drill bit to drill out the blocked off passage, then break out the area between the two new holes. File that slot smooth. Some fuel bowls are made with threads. Some are not. The screw-in filters are readily available with 5/16” hose size. If you want 3/8”, those came on Boss 429 and can be had for $300.
The passenger side requires fittings for 5/16” tube, but you can go 3/8” if you want. This is a factory copy 5/16” tube. (Factory used 1/4” to connect the passenger side bowls). This one shows the tubes installed like an original. I think I will modify it to raise the tube up higher so the heater hoses have more space atop the intake manifold bolt heads.
I like this setup best instead of using those funky dual inlet tubes on the passenger side which are designed to connect to passenger side chevy fuel pump.
facebook pics to share
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Looks good
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Nice clean look!
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Details that others don't always appreciate - very nicely done.
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I like your work!
Nice job.........
6sal6
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I like that look too. I bought this several years ago.
It works great if you have the second metering plate.
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Bolted to Floor wrote:
I like that look too. I bought this several years ago.
It works great if you have the second metering plate.
I like that kit. My crossover tube came from the same guy. Some things, Ford just got right.
I tapped the hole so I could use an existing front bowl. Maybe one of the machinist gurus can tell me how to get it tapped perfectly square to the hole. Probably needs some kind of complicated holding fixture on my drill press?
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MS wrote:
Bolted to Floor wrote:
I like that look too. I bought this several years ago.
It works great if you have the second metering plate.I like that kit. My crossover tube came from the same guy. Some things, Ford just got right.
I tapped the hole so I could use an existing front bowl. Maybe one of the machinist gurus can tell me how to get it tapped perfectly square to the hole. Probably needs some kind of complicated holding fixture on my drill press?
Yes, every time I've seen a perfectly taped hole that was how it was done, or you can use a milling machine too. Bottom line though you need a setup that holds the work piece perfectly perpendicular in both axes to the spindle of drill press or mill. I learned this building things other than car parts, and let's just leave it at that.
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Having been in the aircraft industry for 25 years, I have seen some quite exotic holding fixtures. The problem is spending $10,000, or even $500, or even $100, on a tool to position a tap in a part that I can buy brand new from Holley for $60.
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MS wrote:
Having been in the aircraft industry for 25 years, I have seen some quite exotic holding fixtures. The problem is spending $10,000, or even $500, or even $100, on a tool to position a tap in a part that I can buy brand new from Holley for $60.
Now your getting on my level!! I didn't have the tap or the desire to make a fixture to hold all of it.... I opted for the kit.
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Reality:
I tapped one bowl and it cam out a little crooked. Tried unsuccessfully to retap and just wound up stripping it out. Tried another bowl, a really old Holley bowl. Apparently the cast hole was a tad smaller diameter than the new ones, and I could not get the tap to bite. Third bowl started easily, only a few thousandths off as far as square. The inlet filter is off just a tad, but the nylon gasket is compressed 360 degrees, so it is not perfect, but should work.
I have one more bowl to do for a Holley 750..
I have been telling you guys for years that I didn’t learn all this stuff by getting it right the first time.
Word to wise: if you do this, tap the threads BEFORE you drill out the passage to the needle/seat. That way, if you screw up the threads, you still have a usable undrilled bowl.
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But, if you had an Edelbrock carburetor, you wouldn't need to do all that. Just sayin......
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Ron68 wrote:
But, if you had an Edelbrock carburetor, you wouldn't need to do all that. Just sayin......
No, you wouldn’t be ABLE to do all that and re-create the look your car should have had from the beginning.
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MS wrote:
Reality:
I tapped one bowl and it cam out a little crooked. Tried unsuccessfully to retap and just wound up stripping it out. Tried another bowl, a really old Holley bowl. Apparently the cast hole was a tad smaller diameter than the new ones, and I could not get the tap to bite. Third bowl started easily, only a few thousandths off as far as square. The inlet filter is off just a tad, but the nylon gasket is compressed 360 degrees, so it is not perfect, but should work.
I have one more bowl to do for a Holley 750..
I have been telling you guys for years that I didn’t learn all this stuff by getting it right the first time.
Word to wise: if you do this, tap the threads BEFORE you drill out the passage to the needle/seat. That way, if you screw up the threads, you still have a usable undrilled bowl.
That job is a snap with a vertical mill. It can all be done with one set up including boring the hole to the correct tap size, tapping, drilling for the needle seat passage and surfacing the washer face so it’s perpendicular to the hole.
Too bad we don’t live on the same block!🤨
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Fixed it for you Rudi:
That job is a snap with a vertical mill and skills.
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Bearing Bob wrote:
Fixed it for you Rudi:
That job is a snap with a vertical mill and skills.
Common sense is a big part along with mechanical ability and which from what I see this place has a lot of.
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I heard this somewhere and it really stuck with me: Good judgement comes from experience. Experience comes from bad judgement. Man if that ain't the truth.
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In some cases bad judgment has fatal results, eg; flying and sailing
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Steve,
It looks very good.
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Rudi wrote:
In some cases bad judgment has fatal results, eg; flying and sailing
A couple of “experience” ditties I picked up over the years …
Experience is a wonderful thing. It enables you to recognize a mistake when you make it again.
Extreme caution is no substitute for experience.
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Rudi wrote:
In some cases bad judgment has fatal results, eg; flying and sailing
To say nothing of driving....
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MS wrote:
Ron68 wrote:
But, if you had an Edelbrock carburetor, you wouldn't need to do all that. Just sayin......
No, you wouldn’t be ABLE to do all that and re-create the look your car should have had from the beginning.
True dat. Have to say that the only Holley carb I have ever had was on my 84 F-150 and it was a PITA to tune and stop leaking. Maybe I'm just Holley challenged....
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Ron68 wrote:
MS wrote:
Ron68 wrote:
But, if you had an Edelbrock carburetor, you wouldn't need to do all that. Just sayin......
No, you wouldn’t be ABLE to do all that and re-create the look your car should have had from the beginning.
True dat. Have to say that the only Holley carb I have ever had was on my 84 F-150 and it was a PITA to tune and stop leaking. Maybe I'm just Holley challenged....
I wouldn't say that. I've monkeyed with probably a dozen different carb designs over the years and Holleys are one of my least favorite due to what you describe. Edelbocks are the best/easiest to tune. Carters are pretty similar to the Eddys. Q-Jets are also similar but more complex. The only Holley I ever really liked was on my Model TT. An externally adjustable needle and seat, a manual choke, and a float with a needle valve. You want richer? Turn the knob on the dash. Proof positive that any time you make something more complex it breaks more often and is more difficult to work on. Can you imagine such a thing in our modern world? People would have to understand how an engine works to drive a car? Insanity!
Holleys do look the part though. Kind of like that really good looking chick at the bar. Looks amazing and even though you know its going to cause no end of troubles you pick it up anyway...
F the Holley, marry the Eddy, and throw the Solex off a cliff.
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I have never had what I would describe as a problem with any Holley carb. You guys just aren’t up to task, apparently.
Anything other than a Holley or Autolite just has no place on a Ford.
Kind of like a beautiful woman. Might be more of a challenge, but worth the effort.
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MS wrote:
I have never had what I would describe as a problem with any Holley carb. You guys just aren’t up to task, apparently.
Anything other than a Holley or Autolite just has no place on a Ford.
Kind of like a beautiful woman. Might be more of a challenge, but worth the effort.
Agreed on carb and woman
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