Camaro way faster than I thought !!
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Junior Member
Joined: Jan 2003
Posts: 26
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From: North Cal.
Camaro way faster than I thought !!
My 1990 Camaro 5 speed seems to turn 8,000 RPM easily.
I don't believe it either so I changed out the tach and electronic card mounted with the tach.
It still reads high...idles at 1100- 1500, shows 5000 Rpm at 3000.
Any ideas of what I should try?
thanks Al
I don't believe it either so I changed out the tach and electronic card mounted with the tach.
It still reads high...idles at 1100- 1500, shows 5000 Rpm at 3000.
Any ideas of what I should try?
thanks Al
Junior Member
Joined: Mar 2007
Posts: 59
Likes: 0
From: Staten Island, NY
Car: 1984 Camaro Z28
Engine: 350 from an elcamino
Transmission: stock t-5
Axle/Gears: 10 bolt 3.73 limited slip
Re: Camaro way faster than I thought !!
try a handheld tach to see what your rpm's really are. you could put an aftermarket tach in.
Member
Joined: Apr 2008
Posts: 208
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From: kansas
Car: 82' z28/03' eddie bauer explorer
Engine: 355-395hp/4.6v8
Transmission: Built 700R4/5speed auto 4x4
Axle/Gears: 3.42LSD/3.73
Re: Camaro way faster than I thought !!
mine did the same thing so i just bought an autometer tach reads perfect looks funny tho both tachs that dont match each other on rpms
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iTrader: (1)
Joined: May 2007
Posts: 847
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From: Detroit
Car: 1989 Iroc-Z
Engine: 383 FFI
Transmission: TKO600
Axle/Gears: 3.42
Re: Camaro way faster than I thought !!
And here i was thinking somthing was off in my car because it ALSO idled around 1100 RPM 
This must be a pretty common problem! It seems like there are quite a few people who have this issue.
p.s. my car is a 89 Iroc 5-speed
This must be a pretty common problem! It seems like there are quite a few people who have this issue.
p.s. my car is a 89 Iroc 5-speed
Joined: Aug 2005
Posts: 1,366
Likes: 1
From: louisville, ky
Axle/Gears: '01 3.42 10 bolt
Re: Camaro way faster than I thought !!
there is a tech article somewhere on thirdgen.org explaining how to fix you factory tachs so they are at least close. i think it is in the tech articles accessed from the home page.
Junior Member
Joined: May 2008
Posts: 88
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From: Austin
Car: '91 Camaro RS
Engine: 355 TPI, Comp 268xfi, bowtie heads
Transmission: 700r4
Re: Camaro way faster than I thought !!
yeah when I bought my 91 RS the tach was way off, read 3000rpm at idle
I did the fix on the tech article, only I used a potentiometer to adjust the tach to match what my laptop said the RPM was (via ALDL cable)
got it perfect, matches the ECM readings spot on (gets slightly off at high revs, but only by like 100rpm)
I did the fix on the tech article, only I used a potentiometer to adjust the tach to match what my laptop said the RPM was (via ALDL cable)
got it perfect, matches the ECM readings spot on (gets slightly off at high revs, but only by like 100rpm)
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