1988 Vert diff ratio
05-02-15, 02:32 PM
#1
Junior Member
Thread Starter
1988 Vert diff ratio
I see that this has been asked before but I'm finding conflicting information. I recently purchased an 88' vert and have started upgrading it. I know the verts have open diffs.I was able to find and purchase a 4.10 lsd and pinion from an 88 non turbo on ebay. My question is does my car have a 3.9 diff or a 4.10 diff and is the swap as simple as putting the new diff in, or do I need to change the pinion as well?
I've found a few threads here saying all verts were 3.9, and i've found some that say only the auto's were 3.9 and the 5spds were 4.1.
Mazdatrix has this chart:
79-82 3.909
83-84 12A 3.933
84-85 13B GSLSE 4.076
85 12A 3.909
86-88 5-spd All 4.10
86-88 Automatic 3.909
89-92 Turbo 4.10
89-92 non-turbo, non LSD 4.10
89-90 non-turbo, viscous LSD, "GTUs" only 4.30
93-95 w/manual trans 4.10
93-95 w/automatic trans 3.909
but the information there conflicts with what I've read here. Thanks to all who read this and respond.
I've found a few threads here saying all verts were 3.9, and i've found some that say only the auto's were 3.9 and the 5spds were 4.1.
Mazdatrix has this chart:
79-82 3.909
83-84 12A 3.933
84-85 13B GSLSE 4.076
85 12A 3.909
86-88 5-spd All 4.10
86-88 Automatic 3.909
89-92 Turbo 4.10
89-92 non-turbo, non LSD 4.10
89-90 non-turbo, viscous LSD, "GTUs" only 4.30
93-95 w/manual trans 4.10
93-95 w/automatic trans 3.909
but the information there conflicts with what I've read here. Thanks to all who read this and respond.
05-03-15, 01:13 PM
#2
I see that this has been asked before but I'm finding conflicting information. I recently purchased an 88' vert and have started upgrading it. I know the verts have open diffs.I was able to find and purchase a 4.10 lsd and pinion from an 88 non turbo on ebay. My question is does my car have a 3.9 diff or a 4.10 diff and is the swap as simple as putting the new diff in, or do I need to change the pinion as well?
I've found a few threads here saying all verts were 3.9, and i've found some that say only the auto's were 3.9 and the 5spds were 4.1.
Mazdatrix has this chart:
79-82 3.909
83-84 12A 3.933
84-85 13B GSLSE 4.076
85 12A 3.909
86-88 5-spd All 4.10
86-88 Automatic 3.909
89-92 Turbo 4.10
89-92 non-turbo, non LSD 4.10
89-90 non-turbo, viscous LSD, "GTUs" only 4.30
93-95 w/manual trans 4.10
93-95 w/automatic trans 3.909
but the information there conflicts with what I've read here. Thanks to all who read this and respond.
I've found a few threads here saying all verts were 3.9, and i've found some that say only the auto's were 3.9 and the 5spds were 4.1.
Mazdatrix has this chart:
79-82 3.909
83-84 12A 3.933
84-85 13B GSLSE 4.076
85 12A 3.909
86-88 5-spd All 4.10
86-88 Automatic 3.909
89-92 Turbo 4.10
89-92 non-turbo, non LSD 4.10
89-90 non-turbo, viscous LSD, "GTUs" only 4.30
93-95 w/manual trans 4.10
93-95 w/automatic trans 3.909
but the information there conflicts with what I've read here. Thanks to all who read this and respond.
Thread
Thread Starter
Forum
Replies
Last Post
Captain Hook
2nd Generation Specific (1986-1992)
8
09-22-15 01:12 PM
