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#4009504 - 04/04/19 05:36 PM LS Swap 2009 Crown Vic...
ClayBelt Offline

Over the Hill

Registered: 04/03/18
Posts: 1685
Loc: Leon County
...throttle body swap, that is. A while back I swapped the 70mm throttle body off of a 2003 Lincoln LS onto my 2010 Mercury Grand Marquis, with good results. I neglected to take any photos at the time, but recently Spamgod reached out to me for one for his 2009 CVPI, so I took photos this time when I prepped his for install.

Preperations


So the biggest part of the swap is, obviously, the throttle body. For the 70mm swap the only throttle body I am aware of that works for ours is the one off the 2003-2006 Lincoln LS V8. It’s entirely possible that the retro Thunderbird or certain Jaguars may share the part, but I don’t know for certain, so I can’t say anything. You’ll also need one of the plastic spacer gaskets that came stock from Ford, or an aftermarket equivalent. This will get modified. Tool wise, you’ll need a drill, 5/16” bit, a sharpie, and a dremel for this job.

1. Gasket Modification

The plastic spacer gasket will need to be modified to use the LS throttle body. There is no question there. I didn’t do the modified gasket for this one, but I modified the paper Fel-Pro gasket I used as a template in a similar manner to the way the spacer gasket will need to be.



If you look at it, I lopped off part of one side. This is to avoid cutting into the throttle body where it’s got a small protrusion onto the mating surface. You will also need to make the cut in order to mark the throttle body for the new bolt holes.

2. Throttle Body Modification

The throttle body is meant for a larger plenum bolt pattern than our cars, so there is some drilling involved. I suspect it’s based on the same throttle body used by Black Sunshine in his F-150 75mm upgrade, but again I cannot confirm. I marked mine for drilling using the gasket as a template, and will note that there is ***some*** overlap between the holes on the throttle body, as shown:



If you look over by the throttle body motor, you’ll see the protrusion that requires the gasket modification. Drilling the holes is fairly simple, however there are a few pitfalls to avoid. Drilling overlapping holes like this, the bit may try to slide into the other hole. As long as you keep control of your bit, you should be fine. Additionally, if you don’t manage to keep the bit straight, you may find yourself going back and cleaning up the holes later on so you can bolt it to your plenum. The end result should look a little bit like this:



At this point you should be fine to install it, but if you plan to port the throttle body or your plenum, now is the best time to do it.

3. Installation

Installation is fairly straightforward for the throttle body. Just have to remove the zip tube, remove the old throttle body, and bolt the new one in with the coolant tubes facing upwards. Reassembly is where it gets tricky, however.



Shown above is the throttle body, as installed on my car. The big, glaring change there, other than the throttle body, is the Spectre tubing between the throttle body and the zip tube. It wasn’t the route I wanted to go, as originally I planned on doing as Black Sunshine had and heating the tube to fit, but since SOMETHING must always go wrong when doing these, I melted it enough that it ripped when I put it on the throttle body. Now I could have bought a new zip tube and tried again, but instead I decided to cut off the melted part and attach the Spectre part. It should be a 3.5” to 3.5” adaptor, but I didn’t have one so I made use of a 3” to 4” instead. The end on the zip tube was superglued on both the outside and the inside to prevent any leaks, and the clamp added on as a precaution. The car had an absolutely night and day difference without a tune, still pretty decent with one.
_________________________
There’s a right way, a wrong way, and a janky way to fix something; I don’t usually have the brains or the money to pick the right way.

2001 Chevrolet Tracker LT “Featherbrick” - 6/2016-10/2016 - SOLD
2005 Toyota 4Runner SR5 “Panzer” - 8/2016-4/2018 - SOLD
1966 Ford Thunderbird “Fordy McFordface” - 11/2016-2/2020 - TRADED
2005 Buick LaCrosse CXS “Jumba” - 2/2017-2/2018 - SOLD
2010 Mercury Grand Marquis LS “Touge Sofa” - 4/2018-?
1990 Mazda Miata “Little Boy” - 5/2019-10/2019 - SOLD
1986 Ford Mustang SVO “Touge Fox” - 2/2020-11/2020 - TRADED
1978 MG Midget 1500 - 11/2020-?

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#4009616 - 04/05/19 05:41 PM Re: LS Swap 2009 Crown Vic... [Re: ClayBelt]
2004_p71 Offline

no replacement for displacement
Posting Addict

Registered: 09/04/03
Posts: 15677
Loc: Quebec Canada
Title is a bit miss leading lol

glad it worked for you smile
_________________________


new best time 13.079 @ 105 1.8 60'

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#4009654 - 04/06/19 04:58 AM Re: LS Swap 2009 Crown Vic... [Re: 2004_p71]
ClayBelt Offline

Over the Hill

Registered: 04/03/18
Posts: 1685
Loc: Leon County
Originally Posted By 2004_p71
Title is a bit miss leading lol

glad it worked for you smile


I figured it would be a worthwhile joke lol. Just hoping it proves as worthwhile to others as it did me.
_________________________
There’s a right way, a wrong way, and a janky way to fix something; I don’t usually have the brains or the money to pick the right way.

2001 Chevrolet Tracker LT “Featherbrick” - 6/2016-10/2016 - SOLD
2005 Toyota 4Runner SR5 “Panzer” - 8/2016-4/2018 - SOLD
1966 Ford Thunderbird “Fordy McFordface” - 11/2016-2/2020 - TRADED
2005 Buick LaCrosse CXS “Jumba” - 2/2017-2/2018 - SOLD
2010 Mercury Grand Marquis LS “Touge Sofa” - 4/2018-?
1990 Mazda Miata “Little Boy” - 5/2019-10/2019 - SOLD
1986 Ford Mustang SVO “Touge Fox” - 2/2020-11/2020 - TRADED
1978 MG Midget 1500 - 11/2020-?

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#4009656 - 04/06/19 05:30 AM Re: LS Swap 2009 Crown Vic... [Re: ClayBelt]
Cheapthrillp71 Offline
Member

Registered: 11/20/16
Posts: 149
Loc: Michigan
Convinced me to click on it.
_________________________
#LSSWAPPEDMARAUDER
2003 MM turbo 5.3 [email protected]
#cheapthrillb2
2004 LJ Lq9 one tons
2014 jku Rubicon
2012 powerstroke king ranch crew cab

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#4009662 - 04/06/19 07:32 AM Re: LS Swap 2009 Crown Vic... [Re: ClayBelt]
CrownVic97 Offline

Over the Hill

Registered: 08/16/08
Posts: 3804
Loc: Brockton, MA
Originally Posted By ClayBelt
Originally Posted By 2004_p71
Title is a bit miss leading lol

glad it worked for you smile


I figured it would be a worthwhile joke lol. Just hoping it proves as worthwhile to others as it did me.


Well to be fair, I wouldn’t have clicked on it if not for the title, so it works lol
_________________________
2003 Mercury Marauder 300A: 170k miles.
Bolt ons, TR-3650, 4.56s.


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#4009722 - 04/06/19 02:26 PM Re: LS Swap 2009 Crown Vic... [Re: ClayBelt]
Atomix Offline
n00b

Registered: 03/23/19
Posts: 13
Loc: Maryland
Ha-ha, definately click bait, but also a good mod!

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#4009780 - 04/06/19 10:49 PM Re: LS Swap 2009 Crown Vic... [Re: ClayBelt]
Spamgod Offline
Rookie

Registered: 03/07/19
Posts: 99
Loc: Jeff city MO
I just finished the install and I must say I’m impressed. Dropped my 0-60 time by .3 of a second. Plus it sounds good and a noticeable throttle response. Total credit to claybelt, I never heard of anyone using an LS TB for later model panthers, thought I was going to have to go with BBK at too high of a price. I can say 100% that it works.
_________________________
Grey 2009 Boone Co. P71 AFE CAI, 70mm TB, iTSX “canned” tune, Jmod. Black 2006 Stock P71 K9 slick top

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#4009784 - 04/06/19 10:56 PM Re: LS Swap 2009 Crown Vic... [Re: Spamgod]
ClayBelt Offline

Over the Hill

Registered: 04/03/18
Posts: 1685
Loc: Leon County
Originally Posted By Spamgod
I just finished the install and I must say I’m impressed. Dropped my 0-60 time by .3 of a second. Plus it sounds good and a noticeable throttle response. Total credit to claybelt, I never heard of anyone using an LS TB for later model panthers, thought I was going to have to go with BBK at too high of a price. I can say 100% that it works.


Believe it or not, the only reason it even occurred to me was there was a 2003 Lincoln LS next to the Vic I pulled a standard throttle body off of in the junkyard to compare truck throttle bodies to. When I went to go chuck the throttle body back into the vic, someone had pulled the intake manifold off the LS and left the throttle body. I went ahead and compared it for [censored] and giggles and decided I liked what I was seeing well enough to give it a shot, and it payed off.
_________________________
There’s a right way, a wrong way, and a janky way to fix something; I don’t usually have the brains or the money to pick the right way.

2001 Chevrolet Tracker LT “Featherbrick” - 6/2016-10/2016 - SOLD
2005 Toyota 4Runner SR5 “Panzer” - 8/2016-4/2018 - SOLD
1966 Ford Thunderbird “Fordy McFordface” - 11/2016-2/2020 - TRADED
2005 Buick LaCrosse CXS “Jumba” - 2/2017-2/2018 - SOLD
2010 Mercury Grand Marquis LS “Touge Sofa” - 4/2018-?
1990 Mazda Miata “Little Boy” - 5/2019-10/2019 - SOLD
1986 Ford Mustang SVO “Touge Fox” - 2/2020-11/2020 - TRADED
1978 MG Midget 1500 - 11/2020-?

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#4009946 - 04/08/19 04:20 PM Re: LS Swap 2009 Crown Vic... [Re: ClayBelt]
Spamgod Offline
Rookie

Registered: 03/07/19
Posts: 99
Loc: Jeff city MO
I was thinking this would be a good situation for a spacer as the LS plate sits right up to the plenum and the stock has about an inch or so of housing after the plate.
_________________________
Grey 2009 Boone Co. P71 AFE CAI, 70mm TB, iTSX “canned” tune, Jmod. Black 2006 Stock P71 K9 slick top

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#4009952 - 04/08/19 08:29 PM Re: LS Swap 2009 Crown Vic... [Re: Spamgod]
dixiebandit69 Offline
5.4 Club
Member

Registered: 01/17/12
Posts: 281
Loc: Texas
Originally Posted By Spamgod
I was thinking this would be a good situation for a spacer as the LS plate sits right up to the plenum and the stock has about an inch or so of housing after the plate.


A spacer plate isn't going to do ANYTHING on one of these cars. Or any port fuel injected car, for that matter.

To the O/P: That actually looks like a 5.4 3V throttle body, like Black_Sunshine and myself have used. The bolt pattern looks the same (requires drilling), but the neck-down to the throttle plate looks a little tighter.

For what it's worth, I'm pretty sure that Ford put these same throttle bodies on 5.4 powered E250/ E350 vans with 5.4s. I work on A LOT of those, and it looks identical.
_________________________
2007 Grand Marquis LS: 5.4 swap, 9.9:1 compression ratio, Comp XE268s, NPI pistons, PI heads ported by me, Accufab upper plenum, 75mm DBW throttle body, Factory PI intake with Chinese spacers, CVPI dual exhaust, CVPI torque converter, CVPI air-box and zip tube, J-Mod, 3.55 gears, FMS Trac-Loc differential
17" Dorman CVPI steelies, BFG Comp T/A 255/45 R17s

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#4009956 - 04/08/19 08:42 PM Re: LS Swap 2009 Crown Vic... [Re: dixiebandit69]
ClayBelt Offline

Over the Hill

Registered: 04/03/18
Posts: 1685
Loc: Leon County
Originally Posted By dixiebandit69
Originally Posted By Spamgod
I was thinking this would be a good situation for a spacer as the LS plate sits right up to the plenum and the stock has about an inch or so of housing after the plate.


A spacer plate isn't going to do ANYTHING on one of these cars. Or any port fuel injected car, for that matter.

To the O/P: That actually looks like a 5.4 3V throttle body, like Black_Sunshine and myself have used. The bolt pattern looks the same (requires drilling), but the neck-down to the throttle plate looks a little tighter.

For what it's worth, I'm pretty sure that Ford put these same throttle bodies on 5.4 powered E250/ E350 vans with 5.4s. I work on A LOT of those, and it looks identical.


Alright, then I guess that confirms my suspicions that this 70mm TB is based on the 75mm y’all used. Or maybe it’s the other way around. Either way, best of both worlds I suppose
_________________________
There’s a right way, a wrong way, and a janky way to fix something; I don’t usually have the brains or the money to pick the right way.

2001 Chevrolet Tracker LT “Featherbrick” - 6/2016-10/2016 - SOLD
2005 Toyota 4Runner SR5 “Panzer” - 8/2016-4/2018 - SOLD
1966 Ford Thunderbird “Fordy McFordface” - 11/2016-2/2020 - TRADED
2005 Buick LaCrosse CXS “Jumba” - 2/2017-2/2018 - SOLD
2010 Mercury Grand Marquis LS “Touge Sofa” - 4/2018-?
1990 Mazda Miata “Little Boy” - 5/2019-10/2019 - SOLD
1986 Ford Mustang SVO “Touge Fox” - 2/2020-11/2020 - TRADED
1978 MG Midget 1500 - 11/2020-?

Top
#4010150 - 04/10/19 08:38 AM Re: LS Swap 2009 Crown Vic... [Re: ClayBelt]
Spamgod Offline
Rookie

Registered: 03/07/19
Posts: 99
Loc: Jeff city MO
I’m not saying spacer for power or anything else. I’m saying spacer would make it an easier install and move the plate back to the stock position.
_________________________
Grey 2009 Boone Co. P71 AFE CAI, 70mm TB, iTSX “canned” tune, Jmod. Black 2006 Stock P71 K9 slick top

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#4010166 - 04/10/19 11:48 AM Re: LS Swap 2009 Crown Vic... [Re: ClayBelt]
Spamgod Offline
Rookie

Registered: 03/07/19
Posts: 99
Loc: Jeff city MO
I would think you would want the throttle plate to open fully before the plenum and not partially in the neck at WOT. Just a hypothesis, but wouldn’t the spacer bring the throttle plate back enough so at WOT it is clear of the neck? Also the fact that these are literally installed upside down so the plate opens in the opposite direction might affect flow. I thought about getting a 75 mm throttle body before I realized that the plenum is only around 70mm which would cause a bottling effect from the 5mm reduction. But again, I’m no expert and have never used a 75mm throttle body. All I know is that this mod greatly increased the smile on my face as I push the skinny pedal to the right. I will post my results with the spacer when it gets here. Again, credit to claybelt for doing this mod, I wouldn’t have even thought to do it. And at a ridiculously cheap price.
_________________________
Grey 2009 Boone Co. P71 AFE CAI, 70mm TB, iTSX “canned” tune, Jmod. Black 2006 Stock P71 K9 slick top

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#4015114 - 05/23/19 06:28 PM Re: LS Swap 2009 Crown Vic... [Re: ClayBelt]
Knight_Stalker Offline
Over the Hill

Registered: 03/27/19
Posts: 1016
Loc: Florida
updates? what about those cooling tubes...you just leave them pointing up and open?
_________________________
2007 Norcea Blue Police Interceptor
Various mods


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#4015166 - 05/23/19 09:29 PM Re: LS Swap 2009 Crown Vic... [Re: ClayBelt]
ClayBelt Offline

Over the Hill

Registered: 04/03/18
Posts: 1685
Loc: Leon County
Yeah. They had no purpose on the vic, I just haven’t removed them on my car.
_________________________
There’s a right way, a wrong way, and a janky way to fix something; I don’t usually have the brains or the money to pick the right way.

2001 Chevrolet Tracker LT “Featherbrick” - 6/2016-10/2016 - SOLD
2005 Toyota 4Runner SR5 “Panzer” - 8/2016-4/2018 - SOLD
1966 Ford Thunderbird “Fordy McFordface” - 11/2016-2/2020 - TRADED
2005 Buick LaCrosse CXS “Jumba” - 2/2017-2/2018 - SOLD
2010 Mercury Grand Marquis LS “Touge Sofa” - 4/2018-?
1990 Mazda Miata “Little Boy” - 5/2019-10/2019 - SOLD
1986 Ford Mustang SVO “Touge Fox” - 2/2020-11/2020 - TRADED
1978 MG Midget 1500 - 11/2020-?

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