#1433625 - 03/26/08 01:23 PM
Re: Gear Swap: Did I bite off too much, went with
[Re: Allen Maty]
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Climber
Registered: 02/09/05
Posts: 896
Loc: North Bloomfield, Ohio
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Now here is a guy that isn't afraid of the price of gas and the power of a V8. Thats awsome!
Sounds like all you really need is a tune a Drive shaft and your in business.
how low of gears would the aluminum D/S be good to?
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#1433772 - 03/26/08 04:50 PM
Re: Gear Swap: Did I bite off too much, went with
[Re: dRock96Marquis]
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Posting Addict
Registered: 10/06/05
Posts: 16831
Loc: Sacto. Calif.
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Whiplash disclaimer come with 4.30s?
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2000 P71 Interceptor orig. equip.near mint parchment int.& carpet 155,000 mi. 3.55 rear .
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#1433796 - 03/26/08 05:21 PM
Re: Gear Swap: Did I bite off too much, went with
[Re: Mileaway]
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Over the Hill
Registered: 08/07/07
Posts: 2715
Loc: Bowie, MD
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Wow.
2.73's to 4.30's, that's quite an impressive leap.
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Absurd signature chopped.
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#1433846 - 03/26/08 06:13 PM
Re: Gear Swap: Did I bite off too much, went with
[Re: natedog]
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Over the Hill
Registered: 03/23/08
Posts: 4110
Loc: Glendale, CA
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I would sure say. I have 3.55s and im worried bout gas prices. haha. tell me how the 4.30 gears work. eventually i might swap my gears.
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 04 Crown Victoria LX Sport 95 AM General Hummer
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#1433871 - 03/26/08 06:47 PM
Re: Gear Swap: Did I bite off too much, went with
[Re: whdahel]
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Climber
Registered: 09/21/01
Posts: 986
Loc: Seekonk, Ma
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Now here is a guy that isn't afraid of the price of gas and the power of a V8. Thats awsome!
Sounds like all you really need is a tune a Drive shaft and your in business.
how low of gears would the aluminum D/S be good to? Excellent, seconded! By the way does he have the lowest gear on CVN, I can't recall a lower gear in someone's car?
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#1433916 - 03/26/08 07:44 PM
Re: Gear Swap: Did I bite off too much, went with 4.30
[Re: Al]
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Over the Hill
Registered: 01/07/02
Posts: 3883
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very interesting ratio
what rpms are you hitting at various mphs
you are geared lower than many 1 ton trucks
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1997 P71 145K miles
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#1433932 - 03/26/08 07:57 PM
Re: Gear Swap: Did I bite off too much, went with 4.30
[Re: observer]
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Member
Registered: 09/20/06
Posts: 284
Loc: wichita
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he's got lower gears than a OTR Truck they only come with 4.11 altho id like to see a vic with 4.56 gears
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#1434068 - 03/26/08 10:46 PM
Re: Gear Swap: Did I bite off too much, went with 4.30
[Re: 95merckid]
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Rookie
Registered: 03/10/07
Posts: 88
Loc: Sioux Falls, SD
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4.30 is a CV is insane. They would be good for running 1/4 miles and if you wanted to pull something the size of a mobile home. 4.10 in a pickup are more reasonable because they have a taller tire thus more mph per rpm of the axleshaft. I useto drive a 89 F250 without overdrive and it would turn 3000 rpms at 60mph so the 4.30 ratio in the CV would be even worse. So ballpark rpm of the driveshaft at 85 would be in the neighborhood of 4500. With a .70 OD ratio that would put the engine rpm a little over 3100. Hope you add some protection for yourself from the driveshaft. It will be a murder weapon when it flys apart and goes thru the floor and out the roof.
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#1434110 - 03/26/08 11:20 PM
Re: Gear Swap: Did I bite off too much, went with 4.30
[Re: autotech57103]
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Rookie
Registered: 03/05/08
Posts: 78
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Seriously people, is the driveshaft that big of a problem on crown vics? I don't understand why it would be. I've pushed my Cobra to 160mph several times and it holds up fine, even at 5500rpm in 4th (which is about 120 if I remember correctly). Seriously, is there something I'm missing??
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#1434123 - 03/26/08 11:27 PM
Re: Gear Swap: Did I bite off too much, went with 4.30
[Re: Quickvic30]
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Rookie
Registered: 03/05/08
Posts: 78
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YES it's about 2 feet longer than a stang shaft. Which is what I assume causes flexing at higher RPMs?
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#1434173 - 03/27/08 12:10 AM
Re: Gear Swap: Did I bite off too much, went with 4.30
[Re: MountainDewSVT]
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Poobah
Registered: 12/12/01
Posts: 8468
Loc: Rochester NY
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Seriously people, is the driveshaft that big of a problem on crown vics? I don't understand why it would be. I've pushed my Cobra to 160mph several times and it holds up fine, even at 5500rpm in 4th (which is about 120 if I remember correctly). Seriously, is there something I'm missing?? yup this aint no mustang.. so get those thoughts out of your head... as far as pulling the quarter mile.. no way he will pull those gears on a stock motor... he hasnt got enough motor
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Member Since: 11/02/08
Posts: 2811
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I went from 3.27s to 3.73s and I needed a tune as the tranny just didn't feel the same. My 3.73s are at 2200ish @ 60MPH. I thought I had no regard for the cost of gas when I went with my 3.73s and a 93 octane tune!
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