Differential Ratios & Sources

When checking the stamp on the ring rear, if you don't have 20/20 vision. Bring a magnifying glass. It really isn't easy to read. Also have a flashlight and some steel wool... just in case ya need to do a bit of cleaning. A shop rag is required as well.

3.364

•  240 - 260 Z's / 1970 to 1974 - R180
• 280ZX 6/78 - 9/79 - R200
• 280ZX Automatics and turbo's - R200
• Maxima Sedans Automatics - R180
• Ring gear is stamped with 37:11 Math tip... 37 divided by 11 is 3.3636 

 

3.545

• 240Z - 280ZX Automatics - R180
• 280Z Manual - R200 280ZX Turbo w/Automatics - R200
• Maxima Sedan Manual - R180
• Ring gear is stamped with 39:11

 

3.70

• 810 Sedan - R180
• 280ZX Manual from 6/78 to 6/79 - R200
• 300ZX Non-Turbo and Turbo's - R200
• Ring gear is stamped with 37:10

 

3.70:1 LSD

• Clutch Pack – Finned Alum. Cover
• 300ZX Turbo only 1987-1989

 

3.70:1 LSD Viscus

• 300ZX Turbo Only 1988 Cars are all White. Diff is Labeled. I’ve only heard of one person that knows how to install this in a 1st Gen Z – 240Turbo on Zcar.com I have seen other comments on other mailing listed that indicated that the expense to do this conversion will out weigh the benefits of performing this swap. Unless you have access to machine tool equipment, I would advise ya to swap to an lsd with clutch pack.

 

3.90

• 720 4X4 1/83 to 6/83 - R180
• 280ZX Non-Turbo 1980-1983 - R200
• 200SX Turbo 1984 - R200
• 200SX V6 - R200
• Ring gear is stamped with 39:10

 

4.11:1

• 720 4X4 6/83 to 12/85 - R180
• 200SX Turbo 1985 to 1986 - R200
• 200SX Turbo 1985-1998 -R200 (Canada)
• 200SX Non-Turbo's 1984 to 1988 - R180
• Ring gear is stamped with 37:9