Topic: Speedo/Tach Troubles
in Forum: C3 Interior
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Lifetime MemberIndianapolis, IN - USA
Joined: 9/3/2006
Posts: 2429
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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[QUOTE=manget1] Hi Jack! I really had to pull down to get it to go...[/QUOTE]
ebo
Hmmmm is this sumthin that should be written in a little book???
ebo
ebo
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
[QUOTE=ebo][QUOTE=manget1] Hi Jack! I really had to pull down to get it to go...[/QUOTE]
ebo[/QUOTE]
i didnt seem to make the little book......yet!!
The Rook 2011-05-27 18:51:57
Hmmmm is this sumthin that should be written in a little book???
ebo
Marshall..youre gonna need a bigger book......
Lifetime MemberIndianapolis, IN - USA
Joined: 9/3/2006
Posts: 2429
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!
Lifetime MemberIndianapolis, IN - USA
Joined: 9/3/2006
Posts: 2429
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.c3vr.com/forum/topic82036_post386338.html#386338I wanted a Corvette my whole life, but I never dreamed of all the wonderful people I would meet because of it!
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...)
Lifetime MemberModerator
Duncanville, TX - USA
Joined: 11/8/2003
Posts: 20214
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.
Joel Adams
C3VR Lifetime Member #56 
My Link 
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
Lifetime MemberBelvidere, IL - USA
Joined: 10/24/2004
Posts: 438
Vette(s): 1977 Black T-Top ZZ4 5Sp 16in Wheels
One tooth=3mph.
[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.
[/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????
[/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????
in Forum: C3 Interior
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