C4 Final Output Ratio

krash kendall

Active Member

Nov 19, 2004

1,258

0

36

Aldergrove, B.C. Canada

Sep 7, 2005

#1

• Sep 7, 2005

• #1

What is the final output on a C4? Is it 1:1? Reason being is I need to get new speedo gears. I'll be running 195/75R14 tires with 3.50:1 gears.

Or perhaps some gifted individual could tell me which speedo gear selection would work?

Thanks,

Krash

 

Edbert

Founding Member

Jul 13, 2002

3,548

32

109

Austin TX

Sep 7, 2005

#2

• Sep 7, 2005

• #2

All classic Mustang trannies had a 1:1 final gear ratio, hence no overdrive.

 

thehueypilot

Active Member

Feb 25, 2004

1,084

0

37

Medina,Tennessee

Sep 7, 2005

#3

• Sep 7, 2005

• #3

Try this site for the formula: http://www.classictruckshop.com/garage/shopmathspeedo1.asp

 

stangman67

Member

Feb 8, 2003

294

0

17

connecticut

Sep 7, 2005

#4

• Sep 7, 2005

• #4

http://www.hanlonmotorsports.com/t5speedo.asp

 

Edbert

Founding Member

Jul 13, 2002

3,548

32

109

Austin TX

Sep 8, 2005

#5

• Sep 8, 2005

• #5

This is one reason I bought an electric speedo, I can calibrate it while I drive using the mile markers on the interstate

 

krash kendall

Active Member

Nov 19, 2004

1,258

0

36

Aldergrove, B.C. Canada

Sep 8, 2005

#6

• Sep 8, 2005

• #6

Quite often I see members talk of switching one gear, or just the gear on the speedo cable. Or their phrasing leads one to believe this is what they did. I would think you have to remove the tail section and switch both gears for them to mesh properly. Any comments?