what do i need and where can i get it? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

eric27 · 05-02-2002, 09:32 PM

I need something to make my speedometer correct again. I changed the 3:08 to 3:73 and man am i traveling. I know you guys will know and probably have the part. Thanks

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1972 SWB, VIPER BLUE, TILT, POWER DISC BRAKES,350-AUTO, FACTORY AM/FM. 1970 FORMULA 400 FIREBIRD (HAS TO WAIT DUE TO MR. 72)- "If you dont use your head, you might as well have 2 a$$**"

72chevyLWB · 05-02-2002, 09:34 PM

somebody had posted a site a while back under engine & drivetrain. I used it. told me exactly what speedo gears to get.

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72 Chevy C/10
87 Chevy Silverado 4X4
www.geocities.com/chevylwb/chevylwb.html
Aberdeen South Dakota
WANTED: Drop Spindles
F/S: rebuilt Turbo 400 & Aluminum wheels w/ tires

*Fast68Chevy* · 05-02-2002, 10:26 PM

damn we need a sticky at the top of the page because alot of ppl are asking this over and over and over again, go to www.google.com and searh for speedometer calibration, etc related words, you wil find all kinfs info on net how to fix

keep in mind that each MPH is how many seconds per mile you travel, if you travel at 60mph and use freeway mile markers as timing, the goal is to change size of driven speedo gear in the tranny tial until you get form one marker to the next at 60mph in exactly 60 seconds, too soon and it means you need to speed up the cable with smaller driven gear and too late means opposite

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Randy- Lincoln, IL
randy@ccaonline.com 2177353230
*many GM parts bought, traded, or sold -am parting out: '81 Cutlass Supreme Brougham

current fleet: -71 C-10 350/CH465/3.07- basketcase
-84 Z28 5.0L/700R4/3.73 daily driver
-84 Firebird/SE 2.8L/T-5/3.73/engine bad
-82 purple Trans Am, project #2
*Paint is overrated*
© RSS Enterprises 2000

Huck · 05-03-2002, 06:08 AM

Eric, many transmission shops carry the necessary gears to swap out for speedo correction. Good luck--Huck

05-02-2002, 09:32 PM	#1
eric27 Registered User Join Date: Sep 2001 Location: cooper,tx america Posts: 127	what do i need and where can i get it? I need something to make my speedometer correct again. I changed the 3:08 to 3:73 and man am i traveling. I know you guys will know and probably have the part. Thanks ------------------ 1972 SWB, VIPER BLUE, TILT, POWER DISC BRAKES,350-AUTO, FACTORY AM/FM. 1970 FORMULA 400 FIREBIRD (HAS TO WAIT DUE TO MR. 72)- "If you dont use your head, you might as well have 2 a$$**" __________________ 1972 SWB, VIPER BLUE, TILT, POWER DISC BRAKES,350-AUTO, FACTORY AM/FM. 1971 Camaro SS factory 4 speed project car. " I LOVE IT WHEN A PLAN WORKS"

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05-02-2002, 09:34 PM	#2
72chevyLWB Got 20's???? Join Date: Oct 2001 Location: Aberdeen SD Posts: 1,451	somebody had posted a site a while back under engine & drivetrain. I used it. told me exactly what speedo gears to get. ------------------ 72 Chevy C/10 87 Chevy Silverado 4X4 www.geocities.com/chevylwb/chevylwb.html Aberdeen South Dakota WANTED: Drop Spindles F/S: rebuilt Turbo 400 & Aluminum wheels w/ tires __________________ 99 Silverado Ex-Cab 2wd, Bagged&WhippleCharged 02 Sierra Ex-Cab 4wd 2500 HD The 72 went down the road.

05-02-2002, 10:26 PM	#3
Fast68Chevy Account Suspended Join Date: May 2000 Location: IL Posts: 0	damn we need a sticky at the top of the page because alot of ppl are asking this over and over and over again, go to www.google.com and searh for speedometer calibration, etc related words, you wil find all kinfs info on net how to fix keep in mind that each MPH is how many seconds per mile you travel, if you travel at 60mph and use freeway mile markers as timing, the goal is to change size of driven speedo gear in the tranny tial until you get form one marker to the next at 60mph in exactly 60 seconds, too soon and it means you need to speed up the cable with smaller driven gear and too late means opposite ------------------ Randy- Lincoln, IL randy@ccaonline.com 2177353230 many GM parts bought, traded, or sold -am parting out: '81 Cutlass Supreme Brougham current fleet: -71 C-10 350/CH465/3.07- basketcase -84 Z28 5.0L/700R4/3.73 daily driver -84 Firebird/SE 2.8L/T-5/3.73/engine bad -82 purple Trans Am, project #2 Paint is overrated* © RSS Enterprises 2000

05-03-2002, 06:08 AM	#4
Huck Senior Member Join Date: Jun 2001 Location: Shelbyville, KY Posts: 3,269	Eric, many transmission shops carry the necessary gears to swap out for speedo correction. Good luck--Huck



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