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

witch is better

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Old May 25, 2006 | 08:22 PM
  #1  
cyko83's Avatar
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Joined: Jan 2006
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Car: 83 trans am
Engine: 5.7 V8
Transmission: 700R
witch is better

i have an 700R4 trans and i was woundering if the 700R4 trans any good againts a 400 or a 350turbo ??
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Old May 25, 2006 | 08:23 PM
  #2  
Apeiron's Avatar
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
How do you define "better"?
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Old May 25, 2006 | 11:13 PM
  #3  
Coach Hawk's Avatar
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Joined: Aug 2005
Posts: 366
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From: Evansville, Wisconsin
Car: 91' Pontiac Firebird
Engine: LT1
Transmission: 4L60E
"Better" is relitive because it depens on what your looking for. In stock form, it is not stronger, but it has lockup and OD, so your milage and highway driving experience is better. It is lighter than a 400, so that could make it better. It can be bolted into an F-body using all factory parts and no real modifications, so that could make it better.
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Old May 26, 2006 | 11:11 AM
  #4  
cyko83's Avatar
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Car: 83 trans am
Engine: 5.7 V8
Transmission: 700R
accel

does the 700r4 have better gear ratio then the 350 or 400 for quicker shifting ??
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Old May 27, 2006 | 06:42 PM
  #5  
Coach Hawk's Avatar
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From: Evansville, Wisconsin
Car: 91' Pontiac Firebird
Engine: LT1
Transmission: 4L60E
Gear ratios for those transmissions are as followes:

1st 2nd 3rd 4th Rev
700R4 3.06 1.62 1.00 0.70 2.29
TH350 2.52 1.52 1.00 1.93
TH400 2.48 1.48 1.00 2.00

Shifting isnt controlled by gear ratios though, shift timing, speed, firmness is all controled by the valve body.
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