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Th400 now speedo is about 20% to fast. was 202
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keithholden Offline
#1 Posted : Saturday, 29 December 2007 10:00:27 PM(UTC)
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I went to certify my car and only 6 things to fix.
One was that the speedo is reading incorrect. It says im going faster than I am. Is this an easy fix??
I have a sailsbury diff from a chev statesman with 14 inch wheels the tyres are 265/50/14 inch.

Im almost done on the other things so not far to go now :)

If its not broke it will be soon
If its not broke it will be soon
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#2 Posted : Sunday, 30 December 2007 1:39:22 AM(UTC)
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Check out your diff ratio which should be stamped on the round metal plate just behind the diff yoke.

Post the diff ratio on this forum.

I have several different colour transmission speedo drive gears to suit TH400, will see if we can find one to su
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wildshotz Offline
#3 Posted : Monday, 31 December 2007 5:51:53 AM(UTC)
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Hi Luke.
Sorry to hijack this thread but do you have a speedo gear to suit t400 and 3.08 diff with 15 inch wheels?

Dave
email [email protected]

Edited by user Monday, 31 December 2007 5:53:26 AM(UTC)  | Reason: Not specified
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keithholden Offline
#4 Posted : Monday, 31 December 2007 6:58:44 AM(UTC)
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Hi ratio is 2.78 luke

If its not broke it will be soon
If its not broke it will be soon
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HK1837 Offline
#5 Posted : Monday, 31 December 2007 7:06:20 PM(UTC)
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quote:
Originally posted by wildshotz
Hi Luke.
Sorry to hijack this thread but do you have a speedo gear to suit t400 and 3.0
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If we all had the same (good) taste, who would buy all the Fords?
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#6 Posted : Tuesday, 1 January 2008 7:44:26 AM(UTC)
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Hi Guys,

You will need to find a light green speedo driven gear for you TH400. Light green has 34 teeth. Or a pink with 35 teeth should be pretty close for both of you. I only have a dark green left with 42 teeth to suit a 3.36 diff. I thought i had m
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trev10 Offline
#7 Posted : Tuesday, 1 January 2008 8:12:09 PM(UTC)
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Guys,
I recently purchased a T400 from Chevpower in Perth for my HQ rebuild and noticed the two gears are 11t & 43t for the speedo drive. I have read elsewhere about the first gear should be 8t or 9t in most cases. Can you shed any light on this. How
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keithholden Offline
#8 Posted : Sunday, 6 January 2008 10:41:11 AM(UTC)
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I have a yellow one in the garage.Ill have to count the teeth. I think its from a th400 but as ive never had one apart I couldnt say for sure.

Are they easy to remove??
I have to do it next week when the parts place goes back to work so I can get what
If its not broke it will be soon
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keithholden Offline
#9 Posted : Tuesday, 8 January 2008 6:04:10 PM(UTC)
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Byron I rang about sle one and theres 2 choices one is 40teeth and the other is 35. As they couldnt tell me the tyre size of the car ( or to lazy lol) They didnt have any on the books any longer so put me on to Rarespares which didnt have any new ones in
If its not broke it will be soon
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Tour Director Offline
#10 Posted : Tuesday, 8 January 2008 6:31:49 PM(UTC)
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You could try Rare Spares as they have a comprehensive range of new speedo gears
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HK1837 Offline
#11 Posted : Tuesday, 8 January 2008 10:16:41 PM(UTC)
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quote:
Originally posted by keithholden
Byron I rang about sle one and theres 2 choices one is 40teeth and the other is 35. As
_______________________________________________________
If we all had the same (good) taste, who would buy all the Fords?
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keithholden Offline
#12 Posted : Thursday, 10 January 2008 7:09:59 PM(UTC)
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I decided to remove my one before I went to look for a replacement and it was 35 teeth. So that made me go for the 40 which was also for a sle v8.

Like Byron said on the housing is a bunch of numbers eg 35 36 37 38 39 which represents which ones go int
If its not broke it will be soon
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