transmission 12a / 13b
#1
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transmission 12a / 13b
does someone know if the bolt pattarn for 12a are the same as 13b
or are they compleatly different,,is it possible to bolt a 13b tranny to
a 12a ??
or are they compleatly different,,is it possible to bolt a 13b tranny to
a 12a ??
#2
Driven a turbo FB lately?
iTrader: (1)
As far as I know it will work w/o any problem, I havent done it yet, but will be doing it soon, I looked at my 88 vert and my 85 12A trannys, and the bolt pattern looks exactly the same. The only really significant as far as dimensions on these 2 motors are the 2 rorotr housings and rotrors, they are wider. Also depending on what year FB/SA and what year 13b trans, the shifter and location of the shifter may possible be different...
#3
Old [Sch|F]ool
GSL-SE trannies are the same as 12A trannies for the same years except the -SE had a bellhousing vent and a different (taller? shorter? i forgot) 5th gear.
SA trannies ('78-80) have a totally different shifter position, the shifter is part of the transmission on the SAs (you can fill the tranny through the shifter hole, makes it LOTS easier ) while all '81-up transmissions including turbo have remote mounted shifters that put the shifter further back, but the shift lever goes straight up instead of angling back so the only functional difference is the shift **** is lower and further away from the steering wheel.
SA trannies ('78-80) have a totally different shifter position, the shifter is part of the transmission on the SAs (you can fill the tranny through the shifter hole, makes it LOTS easier ) while all '81-up transmissions including turbo have remote mounted shifters that put the shifter further back, but the shift lever goes straight up instead of angling back so the only functional difference is the shift **** is lower and further away from the steering wheel.
#5
Old [Sch|F]ool
OK, hold it... You'll need to swap the shift tower and tailshaft housing to easily put a 2nd-gen transmission in a 1st-gen. The trans mounts are all different and the shifter's in a different place.
#6
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So,,i use the tail shaft,and shifter mount ?,,i haven't looked very
close, but these parts interchange ? on the transmissions ?
i 've seen somewhere the gear ratios of all gens trans.if the 86 is the
same as the 82 i won't bother with it,i'll just save it,or sell the 86
close, but these parts interchange ? on the transmissions ?
i 've seen somewhere the gear ratios of all gens trans.if the 86 is the
same as the 82 i won't bother with it,i'll just save it,or sell the 86
#7
Super Newbie
1982:
1st
3.674
2nd
2.217
3rd
1.432
4th
1.000
5th
0.825
Reverse
3.542
1986:
1st
3.475
2nd
2.002
3rd
1.366
4th
1.000
5th
0.711
Reverse
3.493
The 86 is too high geared for my taste. Only thing I'd like would be that .71 5th gear
1st
3.674
2nd
2.217
3rd
1.432
4th
1.000
5th
0.825
Reverse
3.542
1986:
1st
3.475
2nd
2.002
3rd
1.366
4th
1.000
5th
0.711
Reverse
3.493
The 86 is too high geared for my taste. Only thing I'd like would be that .71 5th gear
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#10
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WOW,,thanks felix,,also i put the GSL rear end w/lsd,,disk's,,i have
no idea what the screws are in the rear end,,i'm pretty sure the rear
end came out of an 83 gsl,,i didn't look what year,,but made sure it
wasn't gsl-se,,to fit with no problem,,,so use what ?? 82,,or 86,
with the 83 rear end...wouldn't it still be somewhere in the middle
of the power band,,,i guess i should say,100 mph + easy,,,or no ??
because,now it's it cracks 110-115 no problem,,and it's off the line ok
too...are the newer model trans. stronger,built better,better parts,
then the older 82,,because mazda learned,and beefed up,,,whatever
as the 1st gen evolved,,,,to the 2ed gen,,,and on,, right ??
no idea what the screws are in the rear end,,i'm pretty sure the rear
end came out of an 83 gsl,,i didn't look what year,,but made sure it
wasn't gsl-se,,to fit with no problem,,,so use what ?? 82,,or 86,
with the 83 rear end...wouldn't it still be somewhere in the middle
of the power band,,,i guess i should say,100 mph + easy,,,or no ??
because,now it's it cracks 110-115 no problem,,and it's off the line ok
too...are the newer model trans. stronger,built better,better parts,
then the older 82,,because mazda learned,and beefed up,,,whatever
as the 1st gen evolved,,,,to the 2ed gen,,,and on,, right ??
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