What is needed to get my speedo accurate to 140 MPH?
I just got a 140 MPH guage kit. I dont want to do 80 and have it read 130. thanks
I just got a 140 MPH guage kit. I dont want to do 80 and have it read 130. thanks
85 MPH to 140 MPH speedo
- Thread starter TrophyHead
- Start date
Black331Stang
Active Member
moonenn3186
Founding Member
What year is your speedo? 86 and before style of 87-89 syle?
Two Brothers performance in CA does it. About $70.00 plus shipping.
Two Brothers performance in CA does it. About $70.00 plus shipping.
If you have the gauge faces, then just get a 140MPH speedo from anu 89-93 Mustang. ALl you need is the actual speedo mechanism. You just swap it in. It's only two screws and then use your new gauge face overlays.
Black331Stang
Active Member
might be selling minwe with white faces 
butttt 5L5...my friend had an 87 and it came with a 140 speedo with white faces bu the cluster was from an 88 (says on the side) and it was like 40mph off...went and got a 85 speedo and it was all good again.
and 88 ws definitely an 85 speedo year ALL year right? not a half/half job
butttt 5L5...my friend had an 87 and it came with a 140 speedo with white faces bu the cluster was from an 88 (says on the side) and it was like 40mph off...went and got a 85 speedo and it was all good again.
and 88 ws definitely an 85 speedo year ALL year right? not a half/half job
Black331Stang said:might be selling minwe with white faces
butttt 5L5...my friend had an 87 and it came with a 140 speedo with white faces bu the cluster was from an 88 (says on the side) and it was like 40mph off...went and got a 85 speedo and it was all good again.
and 88 ws definitely an 85 speedo year ALL year right? not a half/half job
Yeah 87 and 88 had the 85MPH speedo...all year.
black82fiveoh
Founding Member
so can you take a speedo from an 89-newer and bolt it in an 88 without recalibration??? was looking to do the same with my gf's car
Black331Stang said:might be selling minwe with white faces
butttt 5L5...my friend had an 87 and it came with a 140 speedo with white faces bu the cluster was from an 88 (says on the side) and it was like 40mph off...went and got a 85 speedo and it was all good again.
and 88 ws definitely an 85 speedo year ALL year right? not a half/half job
87 and 88's were all 85MPH. 89 was a half/half year
black82fiveoh said:
Yes, the speedo bolts in perfectly. What you do is unbolt the speedo from the plastic frame it's two screws. This is for the 90-93 speedos as the 89 is a direct swap over
I think i have a pic
Obviously you pull the needle off. But the speedo mechanisms are 100% the same physically, just calibrated differently.
For setting the needle, see the little tick mark under the 0MPH on the factory face? With the needle stop out, set the needle so it points to this at rest.
The thing with this method is that you need a gauge face. Obviously anyone who finds a 89 speedo can directly swap the entire unit over, but if you put a 90-93 speedo in you'll need a face
if you go with white face gauges or some overlays you are all set.
Others can try to CAREFULLY peel the 90-93 face off and swap it over to the 87-89 plastic frame. Use a heat gun to get it soft and transfer it. You will need to trim but it should work.
I got my speedo from a junkyard for $20, and paid $65 for my BBK gauge faces
