6 tooth and 7 tooth drive gear

Bearded Forever

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#1

• Feb 16, 2004

• #1

When I switch from my current t-5 to the 86 TC t5 my speedo drive gear
will go from a 6 tooth to a 7 tooth. Is it going to be off enough that it
should be changed?

 

Asha'man

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Feb 17, 2004

#2

• Feb 17, 2004

• #2

Best thread evar!

 

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I'm serious.

 

Cougar

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Feb 17, 2004

#4

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Your mom is a 6 tooth gear.

 

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Your mom is really your dad.

 

Stinger

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Feb 17, 2004

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So is he!

 

Dr_EluSivE

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Feb 17, 2004

#7

• Feb 17, 2004

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if i recall correctly 1 tooth = 2 mph. i dont think it will make much difference. I am running a the 3.45 rear end speedo gear in my car with 3.73's its makes it about 4 mph too fast but im used to it now.

Dr.

 

Cougar

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Crovax said:

Your mom is really your dad.

Click to expand...

My mom can beat up your dad.

 

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Looks like they went off to see the wizard.

 

i4power

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Feb 17, 2004

#10

• Feb 17, 2004

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If I remember correctly, the 7-tooth drive gear is for the 140 mph speedo, or something along those lines.

 

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K4n545 4r3 t3h l053r5!

 

bhuff30

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Feb 17, 2004

#12

• Feb 17, 2004

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yes, it will make a big difference.
You will need to go from you 20 tooth, to a 23 tooth driven gear. As I recall, the 23 tooth is not avaiblable from ford, but there is someone that makes em.
Otherwise, your speedo will be off by 14%.

 

GTPhreak

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#13

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dodge/chrysler makes the 23 tooth gear

 

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I have the 23 tooth gear.

 

bhuff30

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Crovax said:

I have the 23 tooth gear.

Click to expand...

then your set. I forgot that there were no manual transmissions with a 6 tooth drive gear. I bet they are both 6 tooth. Unless your speedo is off, or you have funky tires, you have a 7 tooth right now.

 

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Then the website lied!
http://www.fordmuscle.com/archives/2000/09/t5swap/index2.shtml

 

Asha'man

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Feb 18, 2004

#17

• Feb 18, 2004

• #17

The site is correct. My tranny is from a TC and has a 6 tooth drive gear. www.hanlonmotorsports.com has a little calculator to figure out your driven gear, and it's pretty accurate. Gives figures both for 6-tooth and 7-tooth drive gears.

Ash

 

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#18

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I got it set. I needed a pink 19 tooth gear.