Transmissions and Drivetrain Need help with your trans? Problems with your axle?

a little help with gear change and speedo gear

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Old May 4, 2008 | 01:20 PM
  #1  
92orangestripes's Avatar
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Joined: Apr 2007
Posts: 15
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From: detroit
Car: 2000 expedition 5.4
Engine: .020 over 350, 9.5.1 comp,
Transmission: 700r4
Axle/Gears: 3.27 aussie 9bolt
a little help with gear change and speedo gear

ok, i need help, i swapped a rear end from a 90 iroc with 3.27 gears into a 92 rs, it had a drum rear with a 2. 7 d something gear, my question is(ive heard that you have to change the speedo plastic gear in the 700 because theres no cable for the speedo,????) how and where if this is true do i find this gear on the trans, location, removal, anything would help. thank you
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Old May 7, 2008 | 02:45 PM
  #2  
paulbuiltbird's Avatar
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Joined: Jan 2006
Posts: 416
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From: Bartlett IL
Car: 1989 Formula 350
Engine: 350 fuel injected
Transmission: 700R4
Axle/Gears: 9 bolt w/370 gears
Re: a little help with gear change and speedo gear

You'll need to find out what speedo gears you have. You can check this by removing your speed sensor and looking at the gear on it and the gear on the output shaft. If you go to the web site for PATC (they sell trans parts) they have a chart that will tell you what gear you need based on rear end ratio & tire size.
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Old May 8, 2008 | 01:38 AM
  #3  
Kevin91Z's Avatar
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From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Re: a little help with gear change and speedo gear

this board for "3.27 speedo gear" and all will be revealed to you.
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Old Jun 16, 2010 | 08:12 PM
  #4  
92orangestripes's Avatar
Thread Starter
Junior Member
 
Joined: Apr 2007
Posts: 15
Likes: 0
From: detroit
Car: 2000 expedition 5.4
Engine: .020 over 350, 9.5.1 comp,
Transmission: 700r4
Axle/Gears: 3.27 aussie 9bolt
Re: a little help with gear change and speedo gear

sorry i forgot to say thanx, it worked out great,
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