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Topic: Digital Dash speedo Q's (Read 3052 times) previous topic - next topic

Digital Dash speedo Q's

Just wanted to see if anyone knew how to modify the digital speedo to read past 85 or if anybody knows of a company that can do it.

Also, I'm putting 3.55 gears in my car soon, will the speedomoter drive gears for a mustang work on these cars?  Just curious...my speedo hasn't read the right speeds in almost a year after going to the 'stang 8.8 with 3.08's. 

Thanks,
Don
Project 3G: Grandpa Grocery Getter-'85 Crown Vic LTD 2-door, 351W with heavily ported/polished GT40 heads, heavily ported/polished Typhoon Power Plus upper & lower intake, Comp Cams 265DEH retarded 1*, FAST EZ-EFI, HD T5, 8.8" 3.73 trac lock with extra clutches, 3G alt. swap, '99 CVPI front brakes, '09 CVPI rear disc brakes, '00 CVPI booster&m/c + wilwood adj prop valve.

Parted & Gone-'88 T-bird Sport, 351W swap, ported GT40 heads


Re: Digital Dash speedo Q's

Reply #2
Here are the shorter instructions if you do not want to wade through the process.
http://www.coolcats.net/tech/advanced/199speedo.html
2000 Jaguar XK8 Convertible - 4.0L DOHC V8 (AJ27)
2018 Ford Explorer - 3.5L DOHC V6 (Duratec 35)
1999 Mercury Grand Marquis - 4.6L SOHC V8 (Modular)
1987 Mercury Cougar LS - 5.0L V8 (Windsor) [SOLD in 2009]

Re: Digital Dash speedo Q's

Reply #3
Thanks man, looks like it's easy enough.

-Don
Project 3G: Grandpa Grocery Getter-'85 Crown Vic LTD 2-door, 351W with heavily ported/polished GT40 heads, heavily ported/polished Typhoon Power Plus upper & lower intake, Comp Cams 265DEH retarded 1*, FAST EZ-EFI, HD T5, 8.8" 3.73 trac lock with extra clutches, 3G alt. swap, '99 CVPI front brakes, '09 CVPI rear disc brakes, '00 CVPI booster&m/c + wilwood adj prop valve.

Parted & Gone-'88 T-bird Sport, 351W swap, ported GT40 heads

Re: Digital Dash speedo Q's

Reply #4
Quote
Thanks man, looks like it's easy enough


The hard part is going to be keeping her under 86mph...  :rollin:  something about seeing the speedo go over 85 that never gets old
[SIGPIC][/SIGPIC]


Re: Digital Dash speedo Q's

Reply #5
LOL, yeah, the A.C. Expressway is my backyard so...not a problem...I've had it in excess of 145 on the expressway before....never...ever...again.  That was a white knuckle ride alright.  I'll just be happy to see it read higher than 85.
Project 3G: Grandpa Grocery Getter-'85 Crown Vic LTD 2-door, 351W with heavily ported/polished GT40 heads, heavily ported/polished Typhoon Power Plus upper & lower intake, Comp Cams 265DEH retarded 1*, FAST EZ-EFI, HD T5, 8.8" 3.73 trac lock with extra clutches, 3G alt. swap, '99 CVPI front brakes, '09 CVPI rear disc brakes, '00 CVPI booster&m/c + wilwood adj prop valve.

Parted & Gone-'88 T-bird Sport, 351W swap, ported GT40 heads

Re: Digital Dash speedo Q's

Reply #6
Quote from: Sick88Tbird
Thanks man, looks like it's easy enough.

-Don


If you ever see me say something like that again, smack me please.  Yeah, let me tell you how easy that was.  Nothing on my dash wanted to come apart, then when it did, it didn't want to go back together the same way.  BUT, it worked quite nicely so I guess that's all that matters.
Project 3G: Grandpa Grocery Getter-'85 Crown Vic LTD 2-door, 351W with heavily ported/polished GT40 heads, heavily ported/polished Typhoon Power Plus upper & lower intake, Comp Cams 265DEH retarded 1*, FAST EZ-EFI, HD T5, 8.8" 3.73 trac lock with extra clutches, 3G alt. swap, '99 CVPI front brakes, '09 CVPI rear disc brakes, '00 CVPI booster&m/c + wilwood adj prop valve.

Parted & Gone-'88 T-bird Sport, 351W swap, ported GT40 heads

Re: Digital Dash speedo Q's

Reply #7
Quote from: Sick88Tbird
If you ever see me say something like that again, smack me please. Yeah, let me tell you how easy that was. Nothing on my dash wanted to come apart, then when it did, it didn't want to go back together the same way. BUT, it worked quite nicely so I guess that's all that matters.

That's the main reason I haven't done this mod yet.  I pulled the dask to check for loose connections a few years ago and it was a real pain.  I just have been too lazy to do it again for this.
2000 Jaguar XK8 Convertible - 4.0L DOHC V8 (AJ27)
2018 Ford Explorer - 3.5L DOHC V6 (Duratec 35)
1999 Mercury Grand Marquis - 4.6L SOHC V8 (Modular)
1987 Mercury Cougar LS - 5.0L V8 (Windsor) [SOLD in 2009]

Re: Digital Dash speedo Q's

Reply #8
It's not that hard once you do it one time and you learn where all the screws are and how everything comes apart.  It's a bit more of a pain if you have a column shifter though.
-Jim
1987 Cougar LS 5.0


 

Re: Digital Dash speedo Q's

Reply #9
I do...
2000 Jaguar XK8 Convertible - 4.0L DOHC V8 (AJ27)
2018 Ford Explorer - 3.5L DOHC V6 (Duratec 35)
1999 Mercury Grand Marquis - 4.6L SOHC V8 (Modular)
1987 Mercury Cougar LS - 5.0L V8 (Windsor) [SOLD in 2009]

Re: Digital Dash speedo Q's

Reply #10
My car was a column shift car...I had to use a floor shifter when I did the HO conversion for exhaust clearance.  Although the column shifter still resides on the column...lol.  It also allowed me to cut the cable for the gear indicator on the dash.  Everything was ready to come out but that was holding it in enough for me to not be able to know exactly what it was until I cut it.
Project 3G: Grandpa Grocery Getter-'85 Crown Vic LTD 2-door, 351W with heavily ported/polished GT40 heads, heavily ported/polished Typhoon Power Plus upper & lower intake, Comp Cams 265DEH retarded 1*, FAST EZ-EFI, HD T5, 8.8" 3.73 trac lock with extra clutches, 3G alt. swap, '99 CVPI front brakes, '09 CVPI rear disc brakes, '00 CVPI booster&m/c + wilwood adj prop valve.

Parted & Gone-'88 T-bird Sport, 351W swap, ported GT40 heads

Re: Digital Dash speedo Q's

Reply #11
is there a differance between an 84 digital dash and an 85? i had to drive next to a focus and wait til his computer shut him down at 112 to know how fast i was going. i would love to see my speedo go over 85. sumtimes i switch it to kilometers just to see it happen!

Re: Digital Dash speedo Q's

Reply #12
I'm not sure anyone has tried on an earlier dash.  You could pull the dash and see if the layout is similar and post some pictures.
2000 Jaguar XK8 Convertible - 4.0L DOHC V8 (AJ27)
2018 Ford Explorer - 3.5L DOHC V6 (Duratec 35)
1999 Mercury Grand Marquis - 4.6L SOHC V8 (Modular)
1987 Mercury Cougar LS - 5.0L V8 (Windsor) [SOLD in 2009]

Re: Digital Dash speedo Q's

Reply #13
Yeah so far we figured out how to do it to everything else. I think that the 83-84 just arent as avalible as they used to be. The 85 up to 88 are the exact same. There were also way more 85 to 88 cougar/tbirds.
Quote from: jcassity
I honestly dont think you could exceed the cost of a new car buy installing new *stock* parts everywhere in your coug our tbird. Its just plain impossible. You could revamp the entire drivetrain/engine/suspenstion and still come out ahead.
Hooligans! 
1988 Crown Vic wagon. 120K California car. Wifes grocery getter. (junked)
1987 Ford Thunderbird LX. 5.0. s.o., sn-95 t-5 and an f-150 clutch. Driven daily and going strong.
1986 cougar.
lilsammywasapunkrocker@yahoo.com