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Wilson Manifolds made Christmas that much better.
#3107806
01/02/23 09:02 PM
01/02/23 09:02 PM
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Joined: Jan 2003
Posts: 28,067
Irving, TX
feets
OP
Senior Management
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OP
Senior Management
Joined: Jan 2003
Posts: 28,067
Irving, TX
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My new manifold for the 541 arrived the week before Christmas. Things were going bonkers at work so I'm just now finding the time to play with the new parts. They port matched the intake, converted it to EFI, and added a few vacuum bungs for my EFI needs as well as the vacuum goodies the car needs. A new 4bbl throttle body was part of the package. The guys at Wilsom complimented my port template on three different occasions. Apparently, most guys are carving "templates" out of corrugated cardboard using a dull beaver. They had some real horror stories there. Mine was made from the heavy card stock sheet that FelPro slides in the box with valley pans. The work looks good. The port match was under $300 and a full effort job would have added $1100 to the bill. I didn't see the value for what might get me 12 hp on a highway cruiser. I slid a pair of calipers down the runners of the RPM and my old Weiand science project. The runner height was quite similar but the width was a totally different story. The old piece has much narrower ports than even the untouched portions of the RPM. I'm fairly certain the new intake will open up a bit better breathing. Unfortunately, it will not fit with the Indy valley pan so I will have to get creative with the gaskets. If nothing else, it'll look purty when I open the hood. 
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
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Re: Wilson Manifolds made Christmas that much better.
[Re: feets]
#3107810
01/02/23 09:12 PM
01/02/23 09:12 PM
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Joined: May 2004
Posts: 12,388
Taxes & Virus's R-US, NY
Dragula
I Live Here
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I Live Here
Joined: May 2004
Posts: 12,388
Taxes & Virus's R-US, NY
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Very nice.....I for one do not like converting intakes to efi cause its so permanent.....Its why I like throttle body's so much. Port the intake, and do what is needed, but converting to efi is kinda final.....I like these little units, bolt on and go...
Last edited by Dragula; 01/02/23 09:15 PM.
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Re: Wilson Manifolds made Christmas that much better.
[Re: feets]
#3107811
01/02/23 09:12 PM
01/02/23 09:12 PM
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Joined: Jan 2003
Posts: 28,067
Irving, TX
feets
OP
Senior Management
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OP
Senior Management
Joined: Jan 2003
Posts: 28,067
Irving, TX
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If you want a good finished product you've got to give them a fighting chance.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
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Re: Wilson Manifolds made Christmas that much better.
[Re: feets]
#3107910
01/03/23 08:17 AM
01/03/23 08:17 AM
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Joined: Jan 2003
Posts: 8,027
Tulsa OK
Bad340fish
master
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master
Joined: Jan 2003
Posts: 8,027
Tulsa OK
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That looks really nice, how many CFM do they say that throttle body is?
68 Barracuda Formula S 340
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Re: Wilson Manifolds made Christmas that much better.
[Re: Bad340fish]
#3107913
01/03/23 08:28 AM
01/03/23 08:28 AM
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Joined: Jan 2003
Posts: 28,067
Irving, TX
feets
OP
Senior Management
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OP
Senior Management
Joined: Jan 2003
Posts: 28,067
Irving, TX
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Throttle body is north of 1200 and capable of exceeding 1500 with a spacer.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
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Re: Wilson Manifolds made Christmas that much better.
[Re: feets]
#3108947
01/05/23 01:48 PM
01/05/23 01:48 PM
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Joined: Feb 2005
Posts: 20,174
PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,174
PA.
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My new manifold for the 541 arrived the week before Christmas. Things were going bonkers at work so I'm just now finding the time to play with the new parts. They port matched the intake, converted it to EFI, and added a few vacuum bungs for my EFI needs as well as the vacuum goodies the car needs. A new 4bbl throttle body was part of the package. The guys at Wilsom complimented my port template on three different occasions. Apparently, most guys are carving "templates" out of corrugated cardboard using a dull beaver. They had some real horror stories there. Mine was made from the heavy card stock sheet that FelPro slides in the box with valley pans. The work looks good. The port match was under $300 and a full effort job would have added $1100 to the bill. I didn't see the value for what might get me 12 hp on a highway cruiser. I slid a pair of calipers down the runners of the RPM and my old Weiand science project. The runner height was quite similar but the width was a totally different story. The old piece has much narrower ports than even the untouched portions of the RPM. I'm fairly certain the new intake will open up a bit better breathing. Unfortunately, it will not fit with the Indy valley pan so I will have to get creative with the gaskets. If nothing else, it'll look purty when I open the hood. Was the under 300.00 just for the port matching?
1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27
Livin and lovin life one day at a time
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Re: Wilson Manifolds made Christmas that much better.
[Re: feets]
#3108970
01/05/23 02:30 PM
01/05/23 02:30 PM
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Joined: Jan 2003
Posts: 17,845
S.E. Michigan
ZIPPY
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,845
S.E. Michigan
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Looks great!
I'm glad somebody supports this kind of work, so those of us who wouldn't consider it can see what it's about.
Rich H.
Esse Quam Videri
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Re: Wilson Manifolds made Christmas that much better.
[Re: ZIPPY]
#3108976
01/05/23 02:37 PM
01/05/23 02:37 PM
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Joined: Jan 2003
Posts: 14,499
So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,499
So. Burlington, Vt.
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Looks great!!
And I’m def looking forward to the results from the new manifold and the increased spring loads.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
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Re: Wilson Manifolds made Christmas that much better.
[Re: fast68plymouth]
#3108999
01/05/23 03:17 PM
01/05/23 03:17 PM
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Joined: Jan 2003
Posts: 16,925
NC
440Jim
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,925
NC
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Great post. Wilson does impressive looking work. But you have to pay for all that labor and love.  It is amazing how different the runners are on "as cast" intakes. Nice to see the Edel RPM intake had runners fairly large between the head and plenum. Can you measure the distance across those "spreader calipers" at a few depths (head opening, 1" into the port, 2" into the port)? It looks like the Wilson port match goes in maybe 1.5-2.0"
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Re: Wilson Manifolds made Christmas that much better.
[Re: feets]
#3109005
01/05/23 03:27 PM
01/05/23 03:27 PM
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Joined: Aug 2003
Posts: 43,180
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,180
Bend,OR USA
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I've been told that any dual plane intake on EFI is a big No  No  How did you decide to use your intake? Was it EFI before with a throttle body? Thanks in advance for your help  
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Wilson Manifolds made Christmas that much better.
[Re: Cab_Burge]
#3109032
01/05/23 04:10 PM
01/05/23 04:10 PM
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Joined: May 2019
Posts: 712
Lake Villa Il
INTMD8
super stock
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super stock
Joined: May 2019
Posts: 712
Lake Villa Il
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Looks nice.
No problem using a dual plane with port injection.
69 Charger. 438ci Gen2 hemi. Flex fuel. Holley HP efi. 650rwhp @7250 510rwtq @5700
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Re: Wilson Manifolds made Christmas that much better.
[Re: 440Jim]
#3109069
01/05/23 06:08 PM
01/05/23 06:08 PM
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Joined: Jan 2003
Posts: 16,925
NC
440Jim
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,925
NC
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Can you measure the distance across those "spreader calipers" at a few depths (head opening, 1" into the port, 2" into the port)?
It looks like the Wilson port match goes in maybe 1.5-2.0"
I figure since I asked you, I would do the same with the Mopar Performance M1 RB intake I have, which is the 4500 carb pad version. What a nightmare. The shape of the port and angles make the WxH measurements into the port kind of difficult, so take each with a grain of salt. And to make it worse, the inner runners and the outer runners on my intake manifold are noticeably different, not just length from plenum to head, but the longer (outer) runners are larger inside...
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Re: Wilson Manifolds made Christmas that much better.
[Re: Cab_Burge]
#3109197
01/05/23 10:13 PM
01/05/23 10:13 PM
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Joined: Jan 2003
Posts: 28,067
Irving, TX
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Irving, TX
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Looks nice.
No problem using a dual plane with port injection.
I thought that the single plane intakes were needed for either the MAP or MAS sensors to be accurate for the AFR tuning for the ECU to work best in closed loop  Manifold pressures should remain fairly constant across the manifold with each runner varying that wee tiny bit with intake pulses. Those pulses should be the same values for each hole unless you've torched something important. What screws up throttle body style injection systems are full height plenum dividers. That creates an irregular vacuum signal to the sensors in the throttle body. Cutting down the divider or using an open carb spacer stabilizes the signal, just like with a carb.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
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Re: Wilson Manifolds made Christmas that much better.
[Re: pittsburghracer]
#3109203
01/05/23 10:17 PM
01/05/23 10:17 PM
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Joined: Jan 2003
Posts: 28,067
Irving, TX
feets
OP
Senior Management
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OP
Senior Management
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Posts: 28,067
Irving, TX
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Was the under 300.00 just for the port matching?
That was for the port matching. EFI conversion was a wee bit more. Think factor of 3.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
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- most excellent !
