Can the wrong speedo gear cause.....

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Mar 24, 2008 | 09:14 PM

IROCmenace

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From: Tennessee

Car: 1988 IROC

Engine: L98

Transmission: 700R4 Silver Dart

Axle/Gears: 3.70 posi

Can the wrong speedo gear cause.....

88 5.7TPI 700R4

Can the wrong speedo gear combo cause kickdown issues? I have noticed at speeds around 45-60 it won't kick down into second. I can pull it into second and still have alot of RPM before a shift point.
My speedo is about 20 mph off i.e. it reads 60 when I am doing 40. Trans locks up on time though.
I just haven't had time to take the tailshaft off and put in the correct drive gear.

Mar 25, 2008 | 11:33 PM

IROCmenace

Thread Starter

Senior Member

iTrader: (1)

Joined: Aug 2002

Posts: 529

Likes: 1

From: Tennessee

Car: 1988 IROC

Engine: L98

Transmission: 700R4 Silver Dart

Axle/Gears: 3.70 posi

Re: Can the wrong speedo gear cause.....

Anyone? I searched several times. I can only come up with posts concerning lockup.

Mar 25, 2008 | 11:39 PM

sofakingdom

Supreme Member

iTrader: (1)

Joined: Sep 2005

Posts: 27,881

Likes: 2,434

Car: Yes

Engine: Usually

Transmission: Sometimes

Axle/Gears: Behind me somewhere

Re: Can the wrong speedo gear cause.....

No.

Kickdown is entirely mechanical & hydraulic. No electronic function involved at all.

Read the full "TV System 101" article here. All however many pages it is nowadays.