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Speedo/Tach Troubles

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Speedo/Tach Troubles

Posted: 5/27/11 6:02pmMessage 11 of 23
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Indianapolis, IN - USA
Joined: 9/3/2006
Posts: 2461
Vette(s): Silver 1974 Convertible - L82 4 speed Low miles (was only 8,900 when I bought it in March 2006) - Now 54K miles. Original owner bought it as an investment for son's college expenses. 2008 Jetstream Blue Convertible
I don't know who this "Jack" fellow is, but I'll join the crowd and welcome him too.  Hi Jack!
 
I agree with rraider.  I've had troubles before with my trip not working and then found I really had to pull down to get it to go...

I wanted a Corvette my whole life, but I never dreamed of all the wonderful people I would meet because of it!


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Speedo/Tach Troubles

Posted: 5/27/11 6:09pmMessage 12 of 23
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Holland Patent, NY - USA
Joined: 6/3/2008
Posts: 4422
Vette(s): #1 *1980 White, Red interior 14,000 mile #2 *1980 Red, Oyster interior 93,000 miles Resto project car, rebuilt to 383 stroker
[QUOTE=manget1] Hi Jack! I really had to pull down to get it to go...[/QUOTE]
 
Hmmmm is this sumthin that should be written in a little book???LOL
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Speedo/Tach Troubles

Posted: 5/27/11 6:11pmMessage 13 of 23
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Sykesville, MD - USA
Joined: 4/27/2008
Posts: 4240
Vette(s): 1979 Corvette Coupe Corvette Light Blue Midnight Blue interior Mirrored Glass T-tops
Yeah, but 79s have a push button reset on the trip odometer! Mine actually resets to just below 0 ( sounds wierd, I know ). But it works!
 
Barry
 
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Speedo/Tach Troubles

Posted: 5/27/11 6:50pmMessage 14 of 23
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Pittsburgh, PA - USA
Joined: 12/4/2002
Posts: 600
Vette(s): 1979 L-82, 3 spd auto, car was originally Lt. Beige currently painted Sportsman Red, Doeskin leather interior, 103,000 miles......
[QUOTE=ebo][QUOTE=manget1] Hi Jack! I really had to pull down to get it to go...[/QUOTE]
 
Hmmmm is this sumthin that should be written in a little book???LOL
Evil Smileebo
[/QUOTE]
i didnt seem to make the little book......yet!!Rolling On The Floor Laughing
Marshall..youre gonna need a bigger book......
The Rook2011-05-27 18:51:57
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Speedo/Tach Troubles

Posted: 5/28/11 4:28amMessage 15 of 23
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Indianapolis, IN - USA
Joined: 9/3/2006
Posts: 2461
Vette(s): Silver 1974 Convertible - L82 4 speed Low miles (was only 8,900 when I bought it in March 2006) - Now 54K miles. Original owner bought it as an investment for son's college expenses. 2008 Jetstream Blue Convertible
Duly noted!!
 
The list should make it here to the site this weekend

I wanted a Corvette my whole life, but I never dreamed of all the wonderful people I would meet because of it!


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Speedo/Tach Troubles

Posted: 5/30/11 5:04amMessage 16 of 23
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Indianapolis, IN - USA
Joined: 9/3/2006
Posts: 2461
Vette(s): Silver 1974 Convertible - L82 4 speed Low miles (was only 8,900 when I bought it in March 2006) - Now 54K miles. Original owner bought it as an investment for son's college expenses. 2008 Jetstream Blue Convertible
[QUOTE=manget1]Duly noted!!
 
The list should make it here to the site this weekend
[/QUOTE]
The list is now posted...  http://www.VetteRegistry.net/forum/topic82036_post386338.html#386338

I wanted a Corvette my whole life, but I never dreamed of all the wonderful people I would meet because of it!


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Speedo/Tach Troubles

Posted: 5/31/11 7:25pmMessage 17 of 23
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Pittsburgh, PA - USA
Joined: 12/4/2002
Posts: 600
Vette(s): 1979 L-82, 3 spd auto, car was originally Lt. Beige currently painted Sportsman Red, Doeskin leather interior, 103,000 miles......

I did indeed realize today that my original rally wheel tires were 225's and my new aluminum rim tires are 255's. Im guessing this is why theres a difference.....so how do I remedy that oh great gods of the C3's? (without changing the tires ebo...)

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Speedo/Tach Troubles

Posted: 5/31/11 7:56pmMessage 18 of 23
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Duncanville, TX - USA
Joined: 11/8/2003
Posts: 22716
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
Change the driven speedo gear....or put a reducer on the cable, if it doesn't already have one. The pic of the gear Albo posted above is incorrect for a 350, but correct for a 400 or 700. Assuming you still have the original trans in yer car, it should be a 400 w/L-82. Take your gear out and count the teeth...then get one with aboot 2-3 teeth LESS to speed the speedo up. Color is really irrelevant anymore, but might be helpful in determining which gear you have. The large gears like is pictured above will also have the tooth count embossed in it.Tongue


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"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"

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Speedo/Tach Troubles

Posted: 5/31/11 8:50pmMessage 19 of 23
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Belvidere, IL - USA
Joined: 10/24/2004
Posts: 440
Vette(s): 1977 Black T-Top ZZ4 5Sp 16in Wheels
One tooth=3mph.
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Speedo/Tach Troubles

Posted: 6/2/11 2:47pmMessage 20 of 23
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Pittsburgh, PA - USA
Joined: 12/4/2002
Posts: 600
Vette(s): 1979 L-82, 3 spd auto, car was originally Lt. Beige currently painted Sportsman Red, Doeskin leather interior, 103,000 miles......
[QUOTE=Adams' Apple]Change the driven speedo gear....or put a reducer on the cable, if it doesn't already have one. The pic of the gear Albo posted above is incorrect for a 350, but correct for a 400 or 700. Assuming you still have the original trans in yer car, it should be a 400 w/L-82. Take your gear out and count the teeth...then get one with aboot 2-3 teeth LESS to speed the speedo up. Color is really irrelevant anymore, but might be helpful in determining which gear you have. The large gears like is pictured above will also have the tooth count embossed in it.Tongue


[/QUOTE]
But I need to slow the speedo down its reading 10 mph faster than Im going...so I want 2 or 3 less teeth...right????
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