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#2851089 - 07/27/14 09:04 PM Big Brake Swap
JeffBoudah Offline
Grand Poobah

Registered: 06/05/03
Posts: 11603
Loc: Holland,MI
I figure since I'm doing it, I might as well do a write up.

Just got done stripping the front end. You'll need to pull the pitman arm, and drop all the steering gear to get the front lower a-arm bolts out.



I just pulled all the suspension off as one, I'll separate the lowers arms to reuse later. (going to clean them up and paint them.)



I would recommend using a spring compressor to get the old ones out, i just got it to this point and popped them out of the lower seat with a 2x4...



Old vs. New (I was pretty blown away by the size difference.)
Rockauto 12761055L & 12761055R




New vs. old front springs.
Speedway Motors 925lb springs

_________________________
2006 MGM GS
1984 Colony Park
1979 Tudor

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#2851091 - 07/27/14 09:07 PM Re: Big Brake Swap [Re: JeffBoudah]
BigNSlow Offline
Metroplectic

Registered: 01/31/03
Posts: 41280
Loc:
Looks good. Are you lowering it too? What rotors did you use?

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#2851092 - 07/27/14 09:11 PM Re: Big Brake Swap [Re: BigNSlow]
JeffBoudah Offline
Grand Poobah

Registered: 06/05/03
Posts: 11603
Loc: Holland,MI
These springs will drop it about 1" (supposedly)

Added a link for the rotors.
_________________________
2006 MGM GS
1984 Colony Park
1979 Tudor

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#2851098 - 07/27/14 09:40 PM Re: Big Brake Swap [Re: JeffBoudah]
BigNSlow Offline
Metroplectic

Registered: 01/31/03
Posts: 41280
Loc:
Would be interesting to know how those Centric rotors hold up. I was afraid to try them having never heard of the brand.

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#2851111 - 07/27/14 10:49 PM Re: Big Brake Swap [Re: BigNSlow]
JeffBoudah Offline
Grand Poobah

Registered: 06/05/03
Posts: 11603
Loc: Holland,MI
I'm pairing these rotors with some EBC green stuff pads. It's gonna stop! Ha
_________________________
2006 MGM GS
1984 Colony Park
1979 Tudor

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#2851127 - 07/28/14 12:20 AM Re: Big Brake Swap [Re: JeffBoudah]
JB88P73 Offline
Member

Registered: 12/22/07
Posts: 412
Loc: Temperance, MI
Gonna keep an eye on this thread for when I do the brake swap on my 84!
_________________________
2002 Crown Victoria LX - Dual exhaust conversion thrush turbo mufflers 3.5" stainless tips. 17" lx sport wheels
1988 Ford Crown Victoria LTD, 139k miles, LO-PO 5.0, 2.73 open gears all Stock no smog or A/C - SOLD 10/09
Best 1/4 mile time as of 4/25/09 ----- 16.84 @ 81.95
1990 Ford F-250 Single Cab Long Bed 5.8/C6 10 mpg
1992 Ford Festiva 1.8 DOHC swap "Lunchbox" 15.20 @ 89 - Scrapped 3/11

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#2851179 - 07/28/14 10:44 AM Re: Big Brake Swap [Re: JeffBoudah]
BlackVic_P71 Offline
Grand Poobah

Registered: 08/28/09
Posts: 14602
Loc: LI, NY
Are you doing the rear too or just the front?
I was looking at the front suspension kits available, maybe after the motor is done...
_________________________
Originally Posted By Jeremy Clarkson
The future is very fast and extremely quiet...but a bit burny.

1989 Ford Crown Victoria Country Squire - 347
2005 Crown Victoria LX Sport with Stainless Works full exhaust, Addco swaybars, Heinous control arms, Powerslot rotors, Hawk HPS pads
Accufab plenum for a DBW Panther
Blue LED buttons/switches how to

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#2851182 - 07/28/14 10:54 AM Re: Big Brake Swap [Re: BlackVic_P71]
JeffBoudah Offline
Grand Poobah

Registered: 06/05/03
Posts: 11603
Loc: Holland,MI
Rears eventually. I'm dropping the rearend to build it with gears, LSD, girdle, springs (225lb from Speedway Motors as well) and shocks. I'll be boxing my rear control arms too.
_________________________
2006 MGM GS
1984 Colony Park
1979 Tudor

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#2851193 - 07/28/14 12:21 PM Re: Big Brake Swap [Re: JeffBoudah]
BlackVic_P71 Offline
Grand Poobah

Registered: 08/28/09
Posts: 14602
Loc: LI, NY
Originally Posted By: JeffBoudah
225lb from Speedway Motors as well

Are those supposed to be equal drop as the 925# fronts?
_________________________
Originally Posted By Jeremy Clarkson
The future is very fast and extremely quiet...but a bit burny.

1989 Ford Crown Victoria Country Squire - 347
2005 Crown Victoria LX Sport with Stainless Works full exhaust, Addco swaybars, Heinous control arms, Powerslot rotors, Hawk HPS pads
Accufab plenum for a DBW Panther
Blue LED buttons/switches how to

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#2851198 - 07/28/14 12:44 PM Re: Big Brake Swap [Re: JeffBoudah]
Packman Offline
Climber

Registered: 01/17/07
Posts: 892
Loc: Joisey
I had the same combo on my Crown Vic and it dropped the car 1.5" all around. Eventually, I put another rear in and ended up getting Eibach 15" x 3"ID rear springs (rotted rear spring perches on donor rear)which lifted it a little. I have a little rake, but nothing distasteful.

JeffBoudah: Are you planning on swapping in rear discs? I regret that I didn't do that when I had the rear apart. I don't think it would have been too hard to get the backing plates off of the rear. Oh well.......live and learn.

Take your time with this swap. I was hasty and installed one of my rear trailing arms backwards. Now i have to go back under there sometime and turn it 180* so I can install the rear sway bar. rant


Packman


Edited by Packman (07/28/14 12:47 PM)
_________________________
2005 Grand Marquis base model (analog dash and a cassette player *sigh*) Mods: SW long tubes, full 2.5" exhaust (cats and dynomax 17749 muffs), and K&N CAI

1986 Crown Vic Built 351W and AOD, BIG brake swap, 3.73R&P, etc....

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#2851215 - 07/28/14 02:56 PM Re: Big Brake Swap [Re: JeffBoudah]
tsg Offline
Climber

Registered: 04/30/13
Posts: 558
Loc: CT
I ran a similar set up on my 96 B body. I sourced a Bilstein shock through Speedway as well that was properly valved for that spring rate. I don t have the part number but it was for a second generation Camaro I believe. (The Caprice and Crown Vics use the same shock dimensions ) The ride was firm but not harsh or jarring.
Quick check of their catalog and I couldn t find them but maybe it will point you in the right direction.


Edited by tsg (07/28/14 03:01 PM)

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#2851222 - 07/28/14 03:22 PM Re: Big Brake Swap [Re: BlackVic_P71]
pantera77 Offline

Over the Hill

Registered: 08/26/07
Posts: 4898
Loc: Buffalo, NY
Originally Posted By: BlackVic_P71
Originally Posted By: JeffBoudah
225lb from Speedway Motors as well

Are those supposed to be equal drop as the 925# fronts?


You'll want 250#'s for a wagon.



I had 225#'s on my 89, but it had too much rake for me, I ended up going to 200#'s

With 225:


200:




And the 87 with 250#'s
_________________________
2020 F250 - 7.3 4x4 CCSB STX 3.55's - BAKFlip MX4
2005 Grand Marquis GS - Marauder swaybars, exhaust, wheels - Daily Driver/Winter Beater
2003 Marauder - Trilogy # 8, JLT, kooks, 2.5" exhaust, 4.10's/31 spline, widened rear's, metco's, addco's, ridetech's 415hp/381tq
2004 Marauder DTR - 46k 100% Bone Stock
1987 Colony Park - Money Pit

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#2851329 - 07/29/14 10:10 AM Re: Big Brake Swap [Re: JeffBoudah]
BigMerc96 Offline
I know nothing
Posting Addict

Registered: 06/05/10
Posts: 19872
Loc: I can see Detroit from here!
Originally Posted By: JeffBoudah

Old vs. New (I was pretty blown away by the size difference.)
Rockauto 12761055L & 12761055R

Box brakes are tiny. The front rotors off my buddy's '91 Wagon were smaller in diameter than the rear rotors off my '96. They were vented at least. I was still pretty surprised when I tossed them in my rotor pile and saw that. FWIW, '95-'97 front rotors are pretty small too, they were pretty close to the same diameter as the fronts off my mom's '03 4cyl Accord, the Accord rotors were thicker too IIRC.
_________________________
-Steve

2006 Audi A6 ~132k miles, stock.
1998 Mercury Grand Marquis LS HPP ~100k miles, slowly acquiring modifications.
1997 Town Car Cartier ~145k miles, Ported Plenum, Gutted Airbox, Contour E-fan Retrofit, Dual exhaust with Magnaflows, cats deleted, MSD Ignition, KYB Gas-A-Justs, P71 front bar, air ride reinstated, Projector retrofit, Caddy 4-note horn retrofit, Wood rim steering wheel retrofit, holistic weight reduction as the parts fall off..
1996 Mercury Grand Marquis GS 117,485mi. R.I.P. 7/14/12 frown

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#2851406 - 07/29/14 08:04 PM Re: Big Brake Swap [Re: BigMerc96]
JeffBoudah Offline
Grand Poobah

Registered: 06/05/03
Posts: 11603
Loc: Holland,MI
Separated the lowers (pickle for required.) and burned out the bushings, that sucked, but it worked.




New bushings!

_________________________
2006 MGM GS
1984 Colony Park
1979 Tudor

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#2851630 - 07/30/14 08:31 PM Re: Big Brake Swap [Re: JeffBoudah]
GM_Guy Offline
Posting Addict

Registered: 12/17/00
Posts: 19226
Loc: London, Ontario Canada
The rotor pic says enough about why one should do the swap. Kinda like a 3G swap, just do it. =-)

Alex.
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Box stuff in the Box forum!

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