#1437961 - 03/31/08 12:45 PM
Re: Gear Swap: Did I bite off too much, went with
[Re: 98VicP71]
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Grand Poobah
Registered: 06/30/02
Posts: 11805
Loc: Virginia
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all 00's received 3.55 gearing and the ammc ds on the p71. 3.27 were not offered as an option for that model year.
if anyone has a 2000 p71 with an aluminum ds or 3.27 gears, they were swapped in or the rear axle was replaced with a different model year.
_________________________
-Current: 2001 Crown Victoria P74  -Gone, but not forgotten: 1988 Mercury Grand Marquis 1994 Ford Crown Victoria 2000 Ford Crown Victoria HPP 2004 Ford Crown Victoria LX Sport 2004 Mercury Grand Marquis
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#1437964 - 03/31/08 12:48 PM
Re: Gear Swap: Did I bite off too much, went with
[Re: BigJon]
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Grand Poobah
Registered: 06/30/02
Posts: 11805
Loc: Virginia
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and yes, there will be a stamp on the ds that says ammc or mmc.
i think there was a green strip and possibly an orange one too. it has been a while since i have seen one. hopefully i will have one soon...
_________________________
-Current: 2001 Crown Victoria P74 -Gone, but not forgotten: 1988 Mercury Grand Marquis 1994 Ford Crown Victoria 2000 Ford Crown Victoria HPP 2004 Ford Crown Victoria LX Sport 2004 Mercury Grand Marquis
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#1438006 - 03/31/08 01:23 PM
Re: Gear Swap: Did I bite off too much, went with 4.30
[Re: autotech57103]
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Rookie
Registered: 12/27/07
Posts: 76
Loc: So Cal
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I will tell you a little story about the gears. I have a 8.8 rear end set up with 3.73's on the side of the house, I was going to put those in the CV. Then I was talking to a buddy who called me a P^%$Y if I put those in. A real man, he says, would go 4.30, not wanting my manhood questioned I ordered the gears the next day. Summit or Ford dealer is the only place I could find them. Anyhow, I was really happy when I picked it up and hit the GO pedal and almost forgot I was in a 4K+ lbs. car. Then 3 days later the O/D light started to flash. My speedo is still off, I am guessing 100 on speedo is 80MPH. The installer put in a 23 tooth speedo gear, but said that is only good up to 3.73's. I talked to my Trans guy about a tune up on the trans, I am getting the driveline balanced and new U-joints this next weekend. Does anybody make a bolt on Driveshaft loop, seems a little extreme, I typically don't go over 90, but hey, you never know. I am planning on taking it to Irwindale 1/8 mile or Palmdale for the 1/4 soon. I will make sure I get pics and a video, I do like nice long burnouts at the track. As for Gas mileage, I took that into consideration, but don't forget it is GNG Powered. $2.75/gallon in CA right now, and I got the compressor for my house that makes it $.90/gallon. Looking to hook it up in the next two weeks. I am trying to figure out a way to temporarily hook up a Tach to see where i am at.
Al...
_________________________
If you don't know where your going, how do you know when you get there...
03 P71 CNG VIC
05 Mustang GT Convertible (Told the wife it was for her)
95 Bronco
96 Winnebago Adventurer
1373 Cubic Inches of FORD at my command
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#1438016 - 03/31/08 01:35 PM
Re: Gear Swap: Did I bite off too much, went with 4.30
[Re: Al]
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13.97@99MPH
Grand Poobah
Registered: 03/28/06
Posts: 12731
Loc: ATL
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WOW you did that to a CNG car  I would be curious as to how that holds up. As to a bolt on Drive Shaft loop yes they make one. Chris from ADTR.net (site sposor) can get one for you and they are not that expensive.
_________________________
1993 Lincoln Town Car 150k+ - RIP 5/10/2011 1998 Ford Crown Victoria P71 - RIP 12/25/2006 2001 Ford Crown Victoria P71(Count blackula) 297k+ - Ummmmmm 
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#1448448 - 04/12/08 07:51 PM
Re: Gear Swap: Did I bite off too much, went with 4.30
[Re: 98VicP71]
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Rookie
Registered: 12/27/07
Posts: 76
Loc: So Cal
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Been having tuning problems lately, that will be another post, still on the fence about going back to 3.73's.
Al...
_________________________
If you don't know where your going, how do you know when you get there...
03 P71 CNG VIC
05 Mustang GT Convertible (Told the wife it was for her)
95 Bronco
96 Winnebago Adventurer
1373 Cubic Inches of FORD at my command
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#1448521 - 04/12/08 09:45 PM
Re: Gear Swap: Did I bite off too much, went with
[Re: Al]
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4v swap + Full Rauder Everything
Over the Hill
Registered: 06/24/04
Posts: 4128
Loc: New York
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I will tell you a little story about the gears. I have a 8.8 rear end set up with 3.73's on the side of the house, I was going to put those in the CV. Then I was talking to a buddy who called me a P^%$Y if I put those in. A real man, he says, would go 4.30, not wanting my manhood questioned I ordered the gears the next day. Summit or Ford dealer is the only place I could find them. Anyhow, I was really happy when I picked it up and hit the GO pedal and almost forgot I was in a 4K+ lbs. car. Then 3 days later the O/D light started to flash. My speedo is still off, I am guessing 100 on speedo is 80MPH. The installer put in a 23 tooth speedo gear, but said that is only good up to 3.73's. I talked to my Trans guy about a tune up on the trans, I am getting the driveline balanced and new U-joints this next weekend. Does anybody make a bolt on Driveshaft loop, seems a little extreme, I typically don't go over 90, but hey, you never know. I am planning on taking it to Irwindale 1/8 mile or Palmdale for the 1/4 soon. I will make sure I get pics and a video, I do like nice long burnouts at the track. As for Gas mileage, I took that into consideration, but don't forget it is GNG Powered. $2.75/gallon in CA right now, and I got the compressor for my house that makes it $.90/gallon. Looking to hook it up in the next two weeks. I am trying to figure out a way to temporarily hook up a Tach to see where i am at.
Al... Wow, impressive. Looks like you shut everyone here up! nice!  0.90 a gallon is very impressive. For a nice transmission: http://www.bc-automotive.comFor a super balanced driveshaft: http://www.dennysdriveshaft.com/Keep up the great work!  Let us know how you do in the 1/4. Post it in the high perf forum.
_________________________
03 300A Ported uppper/lower | SW Longtubes | Borla ProXS | Magnaflow muffled X pipe | Circle D Pro series TC | J-Mod | MSD Cops | Kinsler | 255lph | Dyno tune | 3.73s | Trick flow cover | MMC shaft | 13.8 @ 99 N/A
08 MGM LS 17k! (13K in Aug-16) New daily driver | Loaded Black/Black leather, heated | remote start | factory security glass |Air Ride | Wood leather wheel | 2.73 RAR! | Borla Catback dual kit with H pipe
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#2630459 - 11/23/12 12:08 AM
Re: Gear Swap: Did I bite off too much, went with
[Re: Al]
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Rookie
Registered: 02/24/10
Posts: 66
Loc: Philadelphia, PA USA
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I know I am bringing up this old post but out of pure curiosity, what happens if one were to use a custom made carbon fiber driveshaft with 4.30s? I've read that it allows a 1000 rpm increase in usable engine speed. Does that means that the engine would spin 1,000 rpms lower than normal for this gear ratio?
_________________________
1987 Lincoln Town Car (R.I.P.) my first car
1997 CVLX (R.I.P.) The first car that should have been!
176k+ mi: MZT, 4300K HID headlights, 6000k LED interior light (except cluster), PI driveshaft, extended tailhousing, forced lube mod, J-Mod.
2010 Ford Crown Vic Police Interceptor... I'm back to finish what I started
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#2630460 - 11/23/12 12:15 AM
Re: Gear Swap: Did I bite off too much, went with
[Re: Crown_me_Victor]
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Expert mechanic
Poobah
Registered: 02/06/11
Posts: 5254
Loc: KY
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I know I am bringing up this old post but out of pure curiosity, what happens if one were to use a custom made carbon fiber driveshaft with 4.30s? I've read that it allows a 1000 rpm increase in usable engine speed. Does that means that the engine would spin 1,000 rpms lower than normal for this gear ratio? Do you have the money to buy a carbon fiber driveshaft?
_________________________
forget this BS panther site your all just a bunch of [censored] holes..  1985 2 door vic-------2003 P71: Lots of mods-----1994 Buick Toastmaster Past: 2002 P71, 1996 LTC, 2003 P71
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#2630464 - 11/23/12 12:43 AM
Re: Gear Swap: Did I bite off too much, went with
[Re: Crown_me_Victor]
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Over the Hill
Registered: 01/11/11
Posts: 1015
Loc: Montreal, Qc, Canada
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I know I am bringing up this old post but out of pure curiosity, what happens if one were to use a custom made carbon fiber driveshaft with 4.30s? I've read that it allows a 1000 rpm increase in usable engine speed. Does that means that the engine would spin 1,000 rpms lower than normal for this gear ratio? No it won't spin 1,000 Rpms lower but because of the weight and construction of the carbon fibre ds it can spin 1,000 Rpms more before it vibrates and flexes as much as the others
_________________________
-Dave 2003 P74 Crown Victoria LX Spruce Green- TR3650 5speed swap, Marauder Cluster and gauge pod, Marauder spoiler, 04 cvpi, maf and zip tube, dual exhaust, 4.10 gears, metro rear control arms, SQ roll bar without partition, headlight relay upgrade, Pioneer Avic 930BT head unit + Axxess Metra ASWC-1 for steering wheel controls, 17" CVPI rims. 2004 Manual CVPI aka Guinevere - RIP 
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#2630466 - 11/23/12 12:45 AM
Re: Gear Swap: Did I bite off too much, went with
[Re: Al]
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Over the Hill
Registered: 01/11/11
Posts: 1015
Loc: Montreal, Qc, Canada
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As for going with 4,30s , balls to the wall man!! Congrats I love it! Next you need to do a 5 speed swap, you'll love the acceleration that much more and the fifth gear helps a lot!!
_________________________
-Dave 2003 P74 Crown Victoria LX Spruce Green- TR3650 5speed swap, Marauder Cluster and gauge pod, Marauder spoiler, 04 cvpi, maf and zip tube, dual exhaust, 4.10 gears, metro rear control arms, SQ roll bar without partition, headlight relay upgrade, Pioneer Avic 930BT head unit + Axxess Metra ASWC-1 for steering wheel controls, 17" CVPI rims. 2004 Manual CVPI aka Guinevere - RIP
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#2630483 - 11/23/12 04:48 AM
Re: Gear Swap: Did I bite off too much, went with
[Re: Al]
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Cpt. Smug
Over the Hill
Registered: 03/19/10
Posts: 3345
Loc: Cali
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#2630619 - 11/23/12 03:19 PM
Re: Gear Swap: Did I bite off too much, went with
[Re: Al]
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Over the Hill
Registered: 03/01/12
Posts: 1686
Loc: Saratoga, New York
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You know we enjoyed all 4 pages of it - 2.73 to 4.30 got sum balls
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2007 CVPI SAP 115K/800hrs
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#2631032 - 11/24/12 09:32 PM
Re: Gear Swap: Did I bite off too much, went with
[Re: BillyBishop]
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Rookie
Registered: 02/24/10
Posts: 66
Loc: Philadelphia, PA USA
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I don't have the money for a carbon fiber driveshaft or many other things I'd like to get done at the current time. I just got done with my MZT a few months ago and now I'm about to put in dual exhaust. I've just heard and read so much about CF driveshafts and was wondering how it would help with higher numeric gears.
_________________________
1987 Lincoln Town Car (R.I.P.) my first car
1997 CVLX (R.I.P.) The first car that should have been!
176k+ mi: MZT, 4300K HID headlights, 6000k LED interior light (except cluster), PI driveshaft, extended tailhousing, forced lube mod, J-Mod.
2010 Ford Crown Vic Police Interceptor... I'm back to finish what I started
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#2631494 - 11/26/12 01:22 AM
Re: Gear Swap: Did I bite off too much, went with
[Re: Al]
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Member
Registered: 03/17/12
Posts: 151
Loc: Lincoln, NE, USA
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I read through this thread a while back and read through it again when I saw new posts. Honestly, 4.30s wouldn't be that bad around town. I jumped from 3.27s to 4.10s a while back and around town, there was barely any difference for me. It pulls a lot more revs on the highway though but I rarely leave town so that's of little concern. For the typical town commuter/stoplight dragger, the higher gears like 4.10s and such are very very tolerable. Even before the tune, my car drove fairly normal though it dragged out the gears a little much.
_________________________
 2005 P71 (former Nebraska State Patrol) -124k miles Heinous upper/lower control arms, KYB shocks, Eaton lowering springs, Addco rear swaybar, 4.30s, port/polish plenum, full A/C delete w/delete pulley, shift tune, rebuilt exhaust w/all cats deleted, H-pipe deleted and dumped exhaust, 18'' chrome GT wheels with 255 tires, 20% tint, debadged.
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#2631643 - 11/26/12 02:23 PM
Re: Gear Swap: Did I bite off too much, went with
[Re: Coach_Buzzcut]
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Rookie
Registered: 04/01/12
Posts: 68
Loc: NJ
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Driving in the rain and on cold tires is what sucks with higher gears. Spin spin spin. Turn a corner in the rain and bump the throttle, here comes the ass end around. Other than that they are fun.
I have 4:30's in T/A with nittos and double the HP. Would i put 4:30's in this car? Nah, I just want to get in the car and go, and not have to "DRIVE".
Edited by Fatsix (11/26/12 02:25 PM)
_________________________
2008 CVPI
C&L Upper, 75mm TB, OBX headers and exhaust, Summit under drive pullies, BH1976 Headlight harness, Cooper RS3-A tires.
95 F350 XL SRW
4:10's, BDP S1, D66, 17*, Locker, Stacks, Banks Cooler, Stancor GPR Under Construction
02 Silver Firehawk T/A #996 1LE
BRE cam, Darts, Ported LS6, Twin Disk, Spohn suspension, Moser 9" w/ 4:30's. custom x pipe, Powerbond UD. 436/409 old dual cutout setup.
90mm Fast and 42lb injectors waiting to go on.
1980 M-80 Malibu
Project 10.5" Tire car. Frame Off.
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