2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

quick differential questions

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Old Jul 8, 2005 | 10:16 AM
  #1  
BklynRX7's Avatar
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From: brooklyn, New York
Arrow quick differential questions

Ok Ive heard that automatic fc's came with different diffs than manual fc's. Somethign like the autos had a 3.9 while the manuals had a 4.1. Does this apply to the lsd's too? Im asking because i have an 86 base that i converted from auto to 5spd and am about to swap in a lsd from an automatic gxl. How much of a difference does the gearing make?
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Old Jul 8, 2005 | 11:00 AM
  #2  
ROTARYROCKET7's Avatar
Eats, Sleeps, Dreams Rotary
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From: Queens, NYC
yes they did. Why didnt you just ask me dude. I got the diff you wnat to buy lol.

Only thing ive heard is thta teh acceleartion is a lil slower with the 3.9 than the 4.1. , but you get more torque out of it in the long run.

Yo i didnt know your car was automatic and converted to manual..


Go on aim dude im on. Also i got the coils for your boy. I need $$$ cause im broke for Rotorfest so today or tomrow would be good. Pass by my crib iight...

Jason NYC

Last edited by ROTARYROCKET7; Jul 8, 2005 at 11:05 AM.
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Old Jul 8, 2005 | 11:01 AM
  #3  
1987RX7guy's Avatar
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From: Laredo, Tx
Yes you will have a 3.9 rear end gear. It applies to all diff's. I had a 3.9 LSD in my sport back in the day too. It makes a measurable difference in speedo readings. Semi-noticable difference in driving.
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