JimG

I used this chart. Just put the new gear in, my speedometer is now within 1
MPH.

http://www.raingler.com/tech/speedoChart.asp

--
JimG
80' CJ-7 258 CID, HEI
4.56 Gears, Lock-Right F&R
35" BFG MT on 15x10 Centerlines
D44 Rear, D30 Front. SOA
Dana 300 w/4:1 & Currie twin sticks
Warn X8000i w/ dual batteries

00' TJ Sport 4.0L, 5sp
4.56 Gears, TrueTrac rear
33" BFG AT on 15x8 Eagle Alloys
D35 Rear, D30 Front. 3" Suspension Lift

"Morrissey" <morrissey@nl.rogers.com> wrote in message
news:ckdsgi$57n$1@nntp-stjh-01-01.rogers.nf.net...
> Anyone know of a link (or formula) to calculate the speedo gear needed ...
> I have swapped in a Ford 8.8 with 4.56 gears into a 99TJ (was 3.73) and
> running 33 inch BFG's (35's later).
>
> Thanks
>
> BillM
>

JimG

I used this chart. Just put the new gear in, my speedometer is now within 1
MPH.

http://www.raingler.com/tech/speedoChart.asp

--
JimG
80' CJ-7 258 CID, HEI
4.56 Gears, Lock-Right F&R
35" BFG MT on 15x10 Centerlines
D44 Rear, D30 Front. SOA
Dana 300 w/4:1 & Currie twin sticks
Warn X8000i w/ dual batteries

00' TJ Sport 4.0L, 5sp
4.56 Gears, TrueTrac rear
33" BFG AT on 15x8 Eagle Alloys
D35 Rear, D30 Front. 3" Suspension Lift

"Morrissey" <morrissey@nl.rogers.com> wrote in message
news:ckdsgi$57n$1@nntp-stjh-01-01.rogers.nf.net...
> Anyone know of a link (or formula) to calculate the speedo gear needed ...
> I have swapped in a Ford 8.8 with 4.56 gears into a 99TJ (was 3.73) and
> running 33 inch BFG's (35's later).
>
> Thanks
>
> BillM
>

JimG

I used this chart. Just put the new gear in, my speedometer is now within 1
MPH.

http://www.raingler.com/tech/speedoChart.asp

--
JimG
80' CJ-7 258 CID, HEI
4.56 Gears, Lock-Right F&R
35" BFG MT on 15x10 Centerlines
D44 Rear, D30 Front. SOA
Dana 300 w/4:1 & Currie twin sticks
Warn X8000i w/ dual batteries

00' TJ Sport 4.0L, 5sp
4.56 Gears, TrueTrac rear
33" BFG AT on 15x8 Eagle Alloys
D35 Rear, D30 Front. 3" Suspension Lift

"Morrissey" <morrissey@nl.rogers.com> wrote in message
news:ckdsgi$57n$1@nntp-stjh-01-01.rogers.nf.net...
> Anyone know of a link (or formula) to calculate the speedo gear needed ...
> I have swapped in a Ford 8.8 with 4.56 gears into a 99TJ (was 3.73) and
> running 33 inch BFG's (35's later).
>
> Thanks
>
> BillM
>

L.W.(=?iso-8859-1?Q?=DFill?=) Hughes III

Hi Doug,
And it's hard for me to believe you found it at Motor Trend. But
then, I use to wear bun huggers, that are pretty close to speedos:
http://www.----------.com/swimmer.jpg
God Bless America, ßill O|||||||O
mailto:--------------------

DougW wrote:
>
> Morrissey did pass the time by typing:
> > Thanks All -- got it -- 39 tooth!
>
> Do you know how long it took to find this. :)
> http://www.trucktrend.com/features/a...02_ttg02_s.jpg
>
> Don't ask why. rilly. don't.
>
> --
> DougW

L.W.(=?iso-8859-1?Q?=DFill?=) Hughes III

Hi Doug,
And it's hard for me to believe you found it at Motor Trend. But
then, I use to wear bun huggers, that are pretty close to speedos:
http://www.----------.com/swimmer.jpg
God Bless America, ßill O|||||||O
mailto:--------------------

DougW wrote:
>
> Morrissey did pass the time by typing:
> > Thanks All -- got it -- 39 tooth!
>
> Do you know how long it took to find this. :)
> http://www.trucktrend.com/features/a...02_ttg02_s.jpg
>
> Don't ask why. rilly. don't.
>
> --
> DougW

L.W.(=?iso-8859-1?Q?=DFill?=) Hughes III

Hi Doug,
And it's hard for me to believe you found it at Motor Trend. But
then, I use to wear bun huggers, that are pretty close to speedos:
http://www.----------.com/swimmer.jpg
God Bless America, ßill O|||||||O
mailto:--------------------

DougW wrote:
>
> Morrissey did pass the time by typing:
> > Thanks All -- got it -- 39 tooth!
>
> Do you know how long it took to find this. :)
> http://www.trucktrend.com/features/a...02_ttg02_s.jpg
>
> Don't ask why. rilly. don't.
>
> --
> DougW

Morrissey

Thanks All -- got it -- 39 tooth!

BillM
"Jerry McG" <gmcgeorge.remove@frontier.net> wrote in message
news:cke78k022qs@enews4.newsguy.com...
> Here's another link with a caclulator and formulas:
>
> http://www.jeeptech.com/javaAps/Speedo.html
>
>
> "Morrissey" <morrissey@nl.rogers.com> wrote in message
> news:ckdsgi$57n$1@nntp-stjh-01-01.rogers.nf.net...
>> Anyone know of a link (or formula) to calculate the speedo gear needed
>> ... I have swapped in a Ford 8.8 with 4.56 gears into a 99TJ (was 3.73)
>> and running 33 inch BFG's (35's later).
>>
>> Thanks
>>
>> BillM
>>
>
>

Morrissey

Thanks All -- got it -- 39 tooth!

BillM
"Jerry McG" <gmcgeorge.remove@frontier.net> wrote in message
news:cke78k022qs@enews4.newsguy.com...
> Here's another link with a caclulator and formulas:
>
> http://www.jeeptech.com/javaAps/Speedo.html
>
>
> "Morrissey" <morrissey@nl.rogers.com> wrote in message
> news:ckdsgi$57n$1@nntp-stjh-01-01.rogers.nf.net...
>> Anyone know of a link (or formula) to calculate the speedo gear needed
>> ... I have swapped in a Ford 8.8 with 4.56 gears into a 99TJ (was 3.73)
>> and running 33 inch BFG's (35's later).
>>
>> Thanks
>>
>> BillM
>>
>
>

Morrissey

Thanks All -- got it -- 39 tooth!

BillM
"Jerry McG" <gmcgeorge.remove@frontier.net> wrote in message
news:cke78k022qs@enews4.newsguy.com...
> Here's another link with a caclulator and formulas:
>
> http://www.jeeptech.com/javaAps/Speedo.html
>
>
> "Morrissey" <morrissey@nl.rogers.com> wrote in message
> news:ckdsgi$57n$1@nntp-stjh-01-01.rogers.nf.net...
>> Anyone know of a link (or formula) to calculate the speedo gear needed
>> ... I have swapped in a Ford 8.8 with 4.56 gears into a 99TJ (was 3.73)
>> and running 33 inch BFG's (35's later).
>>
>> Thanks
>>
>> BillM
>>
>
>

DougW

Morrissey did pass the time by typing:
> Thanks All -- got it -- 39 tooth!

Do you know how long it took to find this. :)
http://www.trucktrend.com/features/a...02_ttg02_s.jpg

Don't ask why. rilly. don't.

--
DougW