Tach reading too high
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Joined: Jan 2002
Posts: 925
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From: Kingsport, TN
Car: '92 RS, '84 Z28
Engine: 383, L69
Transmission: T56, 700R4
Axle/Gears: 3.42, 3.42
Tach reading too high
Well ive noticed my tach would read 3000 in drive while cruising, so i had a autometer tach with shift light, We installed it today, low and behold my stock tach was off almost a 1000 rpms, it read 4500 when i was really at 3500. Now it takes alot to hit 4500
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Joined: Sep 2000
Posts: 400
Likes: 2
From: Keller, Texas, USA
Car: Devastating Droptop
Engine: 355 Supercharged
Transmission: Auto 4L60, Built for 700hp
My tach was off too , only 300 to 500rpm.
The resister pack was bad.
I had my tach & speedo overhauled and the speedo converted to a 145mph and all the bulbs replace for $145.00.
and its dead accurate now.
The resister pack was bad.
I had my tach & speedo overhauled and the speedo converted to a 145mph and all the bulbs replace for $145.00.
and its dead accurate now.
Supreme Member
Joined: Dec 2001
Posts: 1,418
Likes: 1
From: Morris, IL
Car: '91 t-top RS; '91 hrdtp Z28
Engine: LO3;383tpi
Transmission: 700r4;very nice 700r4
Axle/Gears: 4.10 zt posi, 3.70 auburn
Where did you have it overhauled at? My tach is way off and it is driving me crazy, but I like the 145mph speedo and refuse to go back to the 110mph cluster!
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eightsixseven
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Dec 16, 2024 01:50 PM
