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Fox Ford 351w Upper and Lower Intake

  • Thread starter Thread starter Swhitney
  • Start date Start date Feb 11, 2025
S

Swhitney

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#1
  • Feb 11, 2025
  • #1
Does anyone use this setup?

Holley Black 351W Ford Hi-Ram EFI Manifold

I'm struggling to find a good upper and lower intake for my 393 stroker build.

 

90sickfox

Wasn't a pretty sight...and I've got big hands
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#2
  • Feb 11, 2025
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I know a guy that runs one but he doesn't run a disrtibutor. His car has coils for each cylinder. Looks like a stock ( big cap ) distributor will have a clearance issue. They had one that had the intake on the passenger side but never seen one in person. The front inlet one looks alot like the LS ones. There are a couple turbo guys that run them ( front inlet ) at the local track but those guys are bougie. They don't talk to low lifes like me. Lmao
 

General karthief

wonder how much it would cost to ship you a pair
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#3
  • Feb 11, 2025
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90sickfox said:
There are a couple turbo guys that run them ( front inlet ) at the local track but those guys are bougie. They don't talk to low lifes like me. Lmao
Click to expand...
Why? Didn't you let them win??
Steve ran one on his twin turbo car but moved on to run some tech company or something and left us minor league's behind. He ran COP I believe because of the distributor issue, yeah it looks like a LS swap with that thing.
 

90sickfox

Wasn't a pretty sight...and I've got big hands
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General karthief said:
Why? Didn't you let them win??
Steve ran one on his twin turbo car but moved on to run some tech company or something and left us minor league's behind. He ran COP I believe because of the distributor issue, yeah it looks like a LS swap with that thing.
Click to expand...

Back in our day anything lower than a 12s quarter was fast as hell. These guys have the best of everything. Brand new big dually trucks and those low profile offroad tires on chrome wheels. I really think its because I roll with a legit fast race crew. They still can't figure out how my stuff has been together for over 6 years without issues. They like showing off and I like minding my business. The lowest hp car with our crew ( other than mine ) is 1200rwhp. We aren't arrogant though. Maybe they think I'm a mole...tryin' to learn the trade secret of oiling down the track every other pass.
 
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General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
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I got a 'friend' that's similar except he sank time, lots of money into a car he had since he was a teen, I'm talk'n windsor with big honk'n cleveland aluminum heads and a hair dryer that can suck up a large dog from 10' away, 25 something years with this car and never took it to the track. Most his buddies built cars for drag, talked smack but never raced.
 
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AeroCoupe

lube between the nut and the face. I know my lubes
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OP, are you going to use a stand alone like a Holley Terminator X?
 
S

Swhitney

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I have a 351W block at the machine shop, waiting for the stroker kit to arrive. After some tough times with my 347 stroker, I decided to go bigger and stronger. I've already had the Victor Jr. cylinder heads drilled out, so I’m pretty much committed to this build.

I didn’t realize how hard it is to find EFI parts for this block—it seems like most people are happy sticking with the 302.

Found this guy as well but never seen anyone running them.
 

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AeroCoupe

lube between the nut and the face. I know my lubes
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#8
  • Feb 17, 2025
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The lower is what’s hard to find for the 351W motors. Took me a couple years to find the one I wanted.
 
S

Swhitney

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#9
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AeroCoupe said:
The lower is what’s hard to find for the 351W motors. Took me a couple years to find the one I wanted.
Click to expand...
What did you go with?
 

Bullitt347

I have been doing it wrong this whole time
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#10
  • Feb 17, 2025
  • #10
90sickfox said:
Back in our day anything lower than a 12s quarter was fast as hell. These guys have the best of everything. Brand new big dually trucks and those low profile offroad tires on chrome wheels. I really think its because I roll with a legit fast race crew. They still can't figure out how my stuff has been together for over 6 years without issues. They like showing off and I like minding my business. The lowest hp car with our crew ( other than mine ) is 1200rwhp. We aren't arrogant though. Maybe they think I'm a mole...tryin' to learn the trade secret of oiling down the track every other pass.
Click to expand...
What does your car run?
 

AeroCoupe

lube between the nut and the face. I know my lubes
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#11
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TFS R upper and lower. The lower is no longer made. For what I am building it will work just fine.

You can go the other route and run a carb intake and run a throttle body on top with injectors in the manifold. You can weld injector bungs onto the intake runners and run a stand alone EFI system like a Holley Terminator X. Have this setup for the 69 fastback we are building and should have finished god only knows when.
 

90sickfox

Wasn't a pretty sight...and I've got big hands
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  • Feb 17, 2025
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Bullitt347 said:
What does your car run?
Click to expand...

I've never pushed it to its limit. I've done a couple test and tunes and a few no prep passes. Its turbo, 331, TW heads, xe282hr camshaft, and been together for 10 years. No speed shifting on the tko600...and soft launches on the 04 cobra IRS. Its a decent street beast and a highway monster. My previous car ran 10.43 ¼ at 127mph. Broke a bunch of stuff constantly.....mainly my pockets.

Might go when the track opens and push it a little more before the humid hot air temps come back. I'm curious what I could really get out of it too.....probably a piston.
 

Noobz347

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#13
  • Feb 17, 2025
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I like that intake you got in the first post.

Call Holley and see which of their systems will cover that thing. I'm guessing that intake takes a GM throttle body?
 

AeroCoupe

lube between the nut and the face. I know my lubes
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#14
  • Feb 18, 2025
  • #14
My understanding is that intake will not clear a stock hood. I’ve never seen one on a Fox so I cannot say for sure so I would look around on that.
 

revhead347

Apparently my ex-husband made that mistake.
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AeroCoupe said:
My understanding is that intake will not clear a stock hood. I’ve never seen one on a Fox so I cannot say for sure so I would look around on that.
Click to expand...
I recently saw one on my facebook groups that cleared a cowl hood.

Kurt
 

revhead347

Apparently my ex-husband made that mistake.
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Swhitney said:
I have a 351W block at the machine shop, waiting for the stroker kit to arrive. After some tough times with my 347 stroker, I decided to go bigger and stronger. I've already had the Victor Jr. cylinder heads drilled out, so I’m pretty much committed to this build.

I didn’t realize how hard it is to find EFI parts for this block—it seems like most people are happy sticking with the 302.

Found this guy as well but never seen anyone running them.
Click to expand...
351 swaps were huge in the 90s and early 2000s. They have completely died off. Now that you can get an 8.2" deck block with 363 cid, the 351 swap engines have lost popularity. It's typical aftermarket. You have the LS, Coyote, Godzilla swaps coming in, and instead of finding a niche and specializing on one thing, every company jumps on the band wagon and tries to out compete each other on price for the same part.

I did have a friend recently get that intake. He did have to ditch the distributor and go coil on plug. It was on a 363, and the car is not running yet. So, basically no help to you.

Kurt
 

WhiteCobra95

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My concern with that intake would be the runner length. Those look shorter than an LS intake, low and mid-range torque could be lacking. This wouldn't be a big deal with forced induction, but could be an issue for street manners naturally aspirated. Cubes, gears, and a rev-happy engine might be required without boost.
 

Bullitt347

I have been doing it wrong this whole time
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#18
  • Mar 1, 2025
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WhiteCobra95 said:
My concern with that intake would be the runner length. Those look shorter than an LS intake, low and mid-range torque could be lacking. This wouldn't be a big deal with forced induction, but could be an issue for street manners naturally aspirated. Cubes, gears, and a rev-happy engine might be required without boost.
Click to expand...
The OP did say it was for a 393 cid build.
That intake should work just fine on the street.
393 = 6.44 L
Larger than most LS engines.
 
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Monkeybutt2000

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I got very lucky and found a Trick Flow Box R for my 408 build. Edelbrock makes the Victor efi and you just run an elbow to the TB.
 
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