Replacing broken 85mph with 120mph speedo
Thread Starter
Member
Joined: May 2012
Posts: 120
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Car: 1986 t/a
Engine: Lg4 305 carb
Transmission: 700r4 auto
Axle/Gears: 2.73 posi
Replacing broken 85mph with 120mph speedo
Hey guys my gauges are tired at 150k.I have the 85 mph speedo stock in my 86 lg4.. I got a gauge cluster set from an 88 t/a all same gauges except speed.
My question is how do I calibrate or get correct speed on the 120mph speedo??
My question is how do I calibrate or get correct speed on the 120mph speedo??
Supreme Member
Joined: Jan 2012
Posts: 2,027
Likes: 33
From: Washington State
Car: 1983 BB 1995 Z28 Camaro's
Engine: 454-350
Transmission: TH350-4l60e
Axle/Gears: 373 posi-Stock
Re: Replacing broken 85mph with 120mph speedo
I would like to know the answer to that also.
Thread Starter
Member
Joined: May 2012
Posts: 120
Likes: 0
Car: 1986 t/a
Engine: Lg4 305 carb
Transmission: 700r4 auto
Axle/Gears: 2.73 posi
Re: Replacing broken 85mph with 120mph speedo
TYPO Sorry its a 140mph NOT 120mph. I know my basically stock lg4 isn't hitting no 140 but gauges were free and mint condition.
Thanks guys
Thanks guys
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
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