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140/145 speedo ???

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Old May 29, 2011 | 08:21 PM
  #1  
UNCLE TOM's Avatar
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From: ms. gulf coast
Car: 91 R/S , 89 dodge p/u
Engine: L31 GM crate re-cammed , 318
Transmission: T-5 , 4 speed auto
Axle/Gears: 3.42 , ?
140/145 speedo ???

i have seen many requests and sales of the 145 speedometers on here . i feel 99.5% are wanted just for the "eye candy" effect . how many people really go over 100 mph . (yes , i know some are going to say several times a week) not too many in my opinion . question is can one use the gauge overlays for 145 on a regular 110 speedo and then change the vss or drive gear and get a working speedometer ? seems to me it could be done . but , i could be wrong . (just ask my ex-wives) just a question that has been on my mind for a while . thanks , good luck .
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Old May 30, 2011 | 06:28 PM
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UNCLE TOM's Avatar
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From: ms. gulf coast
Car: 91 R/S , 89 dodge p/u
Engine: L31 GM crate re-cammed , 318
Transmission: T-5 , 4 speed auto
Axle/Gears: 3.42 , ?
Re: 140/145 speedo ???

any idea's ???
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Old May 30, 2011 | 06:55 PM
  #3  
red rock's Avatar
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From: WI.
Car: 1987 iroc
Engine: 383 TPIS intake, Dyno Don headers
Transmission: 700R4 w/Pro-built Auto/transgo 2-3
Axle/Gears: 3.27/3.70 borg warner 9 bolt
Re: 140/145 speedo ???

I don't know about your question, but i like the part about being wrong, just ask the ex's.
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Old May 30, 2011 | 07:00 PM
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articwhiteZ's Avatar
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From: Spokane WA
Car: 92 Lingenfelter Z28 articwhite
Engine: Aluminum 615BBC
Transmission: Th400wbrake/curri entps9" locker
Axle/Gears: 4.11/4.30/4.56
Re: 140/145 speedo ???

1/4 mile runs always see it over 100MPH (129/134 MPH)

thats with the right speedo/rear end gear & tire size (12.5x29x15)


Last edited by articwhiteZ; May 30, 2011 at 07:04 PM.
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Old May 30, 2011 | 07:03 PM
  #5  
92camaroz28ss's Avatar
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From: miami fl
Car: 92 z28
Engine: fast burn 385
Transmission: t56
Axle/Gears: 3.73
Re: 140/145 speedo ???

there is no difference in the vss's - there can't be. the 145 speedo works as soon as you swap the cluster, nothing else gets changed. thats how i did it with mine, it worked as soon as swapping the cluster
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Old May 30, 2011 | 11:52 PM
  #6  
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Re: 140/145 speedo ???

I have always wondered this too, I thought I read this on here (or I might have dreamed it up) but I thought there was something in the cluster you could change that would make it a 145 mph cluster (with the overlay of coarse) sort of like the board you can change or fix for the tach. But with the 145 mph clusters being worth their weight in gold I would assume it's not that easy, hopefully someone will chime in with some more knowledge on this subject. Btw I would want one for the eye candy effect myself (getting old sucks 10 years ago I would have used the whole 145mph )
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