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Swapping a 145mph into a 110mph

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Old Jan 4, 2001 | 05:22 PM
  #1  
Monkie's Avatar
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From: Greenville, SC
Swapping a 145mph into a 110mph

Ok Im going to a junk yard this weekend and Im wondering what I will need to get for the 145mph speedo and put it into my RS that has a 110mph speedo. Only thing is how will the tach work or will it work? Because the redline will be off. Thanks ahead for the info!

------------------
1992 Camaro RS 3.1L
T5 Manual 5 speed
Cold/RAM air intake
Z-28 Exhaust
8.5mm MSD Ignition wires
TB Coolant bypass

Soon to be a 3.8L turbo RS

AIM screen name - Stopsign696

Kills:

95 (****) Probe GT,94 Mustang GT,91 CRX (dont ask me why he raced me),2nd Gen Z28 (350) haha to you V8 guys!,1992 RS 305 TBI (good race),First Gen Integra, Old Escort LX
More to come
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Old Jan 4, 2001 | 09:34 PM
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WEell I would think that it wont matter, all you need is the guage cluster. The Tach Might read differently because I don't know what the different redline is between the V8's and 6's. It will all read correctly though because the readins from the transmission and ignition won't change. Or atleast this is what I am thinking because I wouldn't see why anything would be different, but I was lucky enough to have a 8000rpm tach and 140mph speedo from the factory.
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Old Jan 4, 2001 | 10:13 PM
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So all I need to get is the tach? Thanks!

------------------
1992 Camaro RS 3.1L
T5 Manual 5 speed
Cold/RAM air intake
Z-28 Exhaust
8.5mm MSD Ignition wires
TB Coolant bypass

Soon to be a 3.8L turbo RS

AIM screen name - Stopsign696

Kills:

95 (****) Probe GT,94 Mustang GT,91 CRX (dont ask me why he raced me),2nd Gen Z28 (350) haha to you V8 guys!,1992 RS 305 TBI (good race),First Gen Integra, Old Escort LX
More to come
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Old Jan 4, 2001 | 10:57 PM
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Jason E's Avatar
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From: Sarasota FL
Car: 99 WS6 / 00 SS / 11 CTS-V / 13 300
Engine: LS1 / LS1 / LSA / 5.7 Hemi
Transmission: 4L60E / T-56 / 6L80E / W5A80
Axle/Gears: 3.23 / 3.42 Auburn / 3.23 / 2.62
WRONG.

The sending unit for the oil pressure will not work, nor will either the engine temp or the voltmeter (one of these works, one won't, I forgot which one....but you'll be able to tell.)

Take the 145MPH speedo out and put it in the V6 cluster....FAR easier.

------------------
Jason E
'89 Camaro RS 2.8 (Medium Gray Metallic)
Hypertech chip/K&N filters/Accel 8.8 wires, Accel Supercoil/RapidFires
Eclipse CD and 100x4 amp/Boston plates and 6x9s
Alpine Alarm, Keyless Entry
IROC tailights, tinted windows

JasonEE98 on AOL IM
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Old Jan 4, 2001 | 11:23 PM
  #5  
88-RSport's Avatar
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you will also need a new cable for the speedo, cause your old one is only 110 whenever you hit 110.... with the new 140 speedo it will read 140. SO it will look cool, but you will have to guess how fast you are really going.
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Old Jan 5, 2001 | 01:00 AM
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yeah, it's alot easier w/ the older gauges. all I had to do was swap speedos and swap my v6 gauges into 145 speedo cluster. Too bad it's not that easier w/ the 92's cluster
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Old Jan 5, 2001 | 06:10 AM
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Kyle F's Avatar
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Why didn't GM make the temp and Oil pressure sending units the same? That is so stupid. The speedo will sork fine the cable is turned by a gear that turns a gear inside the speedo, nothing should change here. I was unaware(while working at a parts store in high school)that we should ever ask what speedo you have before selling a cable. I am thinking still that it will work, but I could be wrong. Has anyone actually done this and left their old cable in?
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Old Jan 5, 2001 | 10:03 AM
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From: Central NJ, USA
Car: 1986 Firebird
Engine: 2.8 V6
Transmission: 700R4
Kyle, hush.

Monkie, you don't have a speedometer cable. You have an electronic one (yes, I know, it's not digital- but it's still electronic.) GM got rid of cable-driven speedometers in the late-80's.

Previously, the speedo was driven by a cable coming from the tailshaft of the trans. The VSS was built into the back of the speedometer, and was spun by the speedo. The VSS then sent the electric signal to the computer.

On your design with the electronic speedo, here's what happens: The transmission spins the VSS, now located in the tranny's tailshaft. The VSS wire goes to both the speedo and computer.

If you find another 145 speedo from an 89-up car, it will go in fine. If you find a 145 speedo from, say, 1982, it won't work.


------------------
-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
---Think your car could be pic of the week? Visit http://www.f-body.net for details!
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Old Jan 5, 2001 | 11:40 AM
  #9  
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From: Greenville, SC
Hey Tom if I got one out of like a 89 or so IROC or Z what else will I need and will it fit right? Thanks you guys (even Kyle )!

------------------
1992 Camaro RS 3.1L
T5 Manual 5 speed
Cold/RAM air intake
Z-28 Exhaust
8.5mm MSD Ignition wires
TB Coolant bypass

Soon to be a 3.8L turbo RS

AIM screen name - Stopsign696

Kills:

95 (****) Probe GT,94 Mustang GT,91 CRX (dont ask me why he raced me),2nd Gen Z28 (350) haha to you V8 guys!,1992 RS 305 TBI (good race),First Gen Integra, Old Escort LX
More to come
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Old Jan 6, 2001 | 09:37 PM
  #10  
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um guys, he has a '92 maro, he needs a 145 mph speedo from a 91-92 maro w/ the redesigned dash.
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Old Jan 7, 2001 | 05:49 PM
  #11  
Jason E's Avatar
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Joined: Jun 2000
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From: Sarasota FL
Car: 99 WS6 / 00 SS / 11 CTS-V / 13 300
Engine: LS1 / LS1 / LSA / 5.7 Hemi
Transmission: 4L60E / T-56 / 6L80E / W5A80
Axle/Gears: 3.23 / 3.42 Auburn / 3.23 / 2.62
Irrelevant question for Tom...

My '89 has no speedo cable? Why does it "swauqk" when its cold out (aka under 20)?? I was told that was because of the speedo cable...

------------------
Jason E
'89 Camaro RS 2.8 (Medium Gray Metallic)
Hypertech chip/K&N filters/Accel 8.8 wires, Accel Supercoil/RapidFires
Eclipse CD and 100x4 amp/Boston plates and 6x9s
Alpine Alarm, Keyless Entry
IROC tailights, tinted windows

JasonEE98 on AOL IM
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Old Jan 8, 2001 | 12:28 PM
  #12  
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From: pittsburgh, pa
Car: 95 Caprice
Engine: 5.7l LT1
Transmission: 4L60E
Axle/Gears: 2.93
slowcamaro88sc, exactally what i was thinking, i dont think a older gauge cluster will bolt up the same.. ive never worked with the new redesigned ones at all but are they one peice or can you just swap the speedo by itself? in that case, just swap the speedo..

kyle, unlike ford which doesnt even make many v8's anymore, gm uses different senders for different applications, ie, 0-60psi and 0-80psi oil pressure senders, or higher temp senders, as as the application varies so will the range of data the sender must send.. (had to be a smartarse.. :P )



------------------
4.6l GT?? Oh you mean the phoney pony..
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Old Jan 8, 2001 | 02:19 PM
  #13  
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From: Los Angeles, CA
Engine: LH0 3.1L
Originally posted by scoob8000:
slowcamaro88sc, exactally what i was thinking, i dont think a older gauge cluster will bolt up the same.. ive never worked with the new redesigned ones at all but are they one peice or can you just swap the speedo by itself? in that case, just swap the speedo..

nope, the 90-92 dash is one piece so you can't remove just one gauge.


------------------
Dan
1990 3.1L RS
80 Series Flowmaster
It's fast(er than a 3 cyl metro)
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Old Jan 9, 2001 | 06:51 PM
  #14  
scoob8000's Avatar
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From: pittsburgh, pa
Car: 95 Caprice
Engine: 5.7l LT1
Transmission: 4L60E
Axle/Gears: 2.93
dang.. thats kinda rough.. i kinda like the layout of the 90-92 gauge pods, but it seems like too much of a pain if you got a bad unit.. reminds me of a digital dash i attempted to repair on a berlineta.. tho they look schweet, their a total headache...
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Old Jan 9, 2001 | 07:28 PM
  #15  
Monkie's Avatar
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I just dont like how they are half a circle.

------------------
1992 Camaro RS 3.1L
T5 Manual 5 speed
Cold/RAM air intake
Z-28 Exhaust
8.5mm MSD Ignition wires
TB Coolant bypass

Soon to be a 3.8L turbo RS

AIM screen name - Stopsign696

Kills:

95 (****) Probe GT,94 Mustang GT,91 CRX (dont ask me why he raced me),2nd Gen Z28 (350) haha to you V8 guys!,1992 RS 305 TBI (good race),First Gen Integra, Old Escort LX
More to come
Reply
Old Jan 9, 2001 | 10:15 PM
  #16  
CaliCamaroRS's Avatar
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From: Los Angeles, CA
Engine: LH0 3.1L
i personally like the 90-92 gauges WAAAAAY better than the 82-89.

------------------
Dan
1990 3.1L RS
80 Series Flowmaster
It's fast(er than a 3 cyl metro)
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Old Jan 10, 2001 | 09:19 AM
  #17  
TomP's Avatar
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Posts: 13,414
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From: Central NJ, USA
Car: 1986 Firebird
Engine: 2.8 V6
Transmission: 700R4
JasonE, you'll have to check under your car to see if there's a speedo cable coming out of the tranny's tailshaft. It comes out the driver's side, and runs along the fuel lines under the car for a while. There's always debate as to whether GM went to digital in '88, '89, or '90.



------------------
-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
---Think your car could be pic of the week? Visit http://www.f-body.net for details!
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Old Jan 10, 2001 | 06:10 PM
  #18  
scoob8000's Avatar
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From: pittsburgh, pa
Car: 95 Caprice
Engine: 5.7l LT1
Transmission: 4L60E
Axle/Gears: 2.93
yeah.. my 87 is cable driven but the 89ta i had was the electronic speedo..
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