Zexel torsion w/3.42's installed--speedo ?'s
10-14-2001, 05:17 PM
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Zexel torsion w/3.42's installed--speedo ?'s
Ok, just had my 3.42's with Zexel torsion posi installed last week. I haven't finished breaking them in yet, so I don't know how they perform. The gears whine a little, but not bad.
I am gonna have my tranny rebuilt in a couple months, so it won't hurt anything if I just wait till then to change the speedo gears right? I know the speedo is off by about 20mph, but how does it affect the odometer and tripometer?
I think the gears I need are 19 white(driven) and 7 purple(drive), anybody have the PN's for these?
By the way I have a 700R4.
------------------
89 RS parts car
Daily driver 91 RS auto LO3 70k, 14x3 K&N Open element, cat-back delete, Richmond 3.42's, Zexel Torsion posi.
Coming soon: 350, headers, loudmouth exhaust, gutted cat.
I am gonna have my tranny rebuilt in a couple months, so it won't hurt anything if I just wait till then to change the speedo gears right? I know the speedo is off by about 20mph, but how does it affect the odometer and tripometer?
I think the gears I need are 19 white(driven) and 7 purple(drive), anybody have the PN's for these?
By the way I have a 700R4.
------------------
89 RS parts car
Daily driver 91 RS auto LO3 70k, 14x3 K&N Open element, cat-back delete, Richmond 3.42's, Zexel Torsion posi.
Coming soon: 350, headers, loudmouth exhaust, gutted cat.
10-15-2001, 12:04 AM
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Car: 1987 Trans Am GTA
Engine: Miniram'd 383, 24X LS1 PCM
Transmission: TH700R4, 4200 stall
Axle/Gears: 9", 4.33:1
Search anyone??? This is asked pretty much once a day.......... not flamin - just pointing out the nice search function we have here 
The speedo gears are as follows for 3.42 gears and a TH700R4 (those are GM part numbers):
15T Drive (8642620) Gray
41T Driven (25513048) Yellow
Laterzzzzzz
Good Luck
------------------
1987 GTA L98 MD8
355, TFS Heads, LT4 Hot Cam
My GTA
The Minnesota F-body Club
The speedo gears are as follows for 3.42 gears and a TH700R4 (those are GM part numbers):
15T Drive (8642620) Gray
41T Driven (25513048) Yellow
Laterzzzzzz
Good Luck
------------------
1987 GTA L98 MD8
355, TFS Heads, LT4 Hot Cam
My GTA
The Minnesota F-body Club
10-15-2001, 12:05 AM
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Car: 1987 Trans Am GTA
Engine: Miniram'd 383, 24X LS1 PCM
Transmission: TH700R4, 4200 stall
Axle/Gears: 9", 4.33:1
That is for stock 26" tall tires (245/50/R16)
------------------
1987 GTA L98 MD8
355, TFS Heads, LT4 Hot Cam
My GTA
The Minnesota F-body Club
------------------
1987 GTA L98 MD8
355, TFS Heads, LT4 Hot Cam
My GTA
The Minnesota F-body Club
10-15-2001, 05:03 PM
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Car: 92 RS - Fully Restored w/Custom Int
Engine: LO3 with some mods
Transmission: T-5
Axle/Gears: 3.42 Richmond
<font face="Verdana, Arial" size="2">Originally posted by RyanSS:
Ok, just had my 3.42's with Zexel torsion posi installed last week. I haven't finished breaking them in yet, so I don't know how they perform. The gears whine a little, but not bad.
I am gonna have my tranny rebuilt in a couple months, so it won't hurt anything if I just wait till then to change the speedo gears right? I know the speedo is off by about 20mph, but how does it affect the odometer and tripometer?
I think the gears I need are 19 white(driven) and 7 purple(drive), anybody have the PN's for these?
By the way I have a 700R4.
</font>
Ok, just had my 3.42's with Zexel torsion posi installed last week. I haven't finished breaking them in yet, so I don't know how they perform. The gears whine a little, but not bad.
I am gonna have my tranny rebuilt in a couple months, so it won't hurt anything if I just wait till then to change the speedo gears right? I know the speedo is off by about 20mph, but how does it affect the odometer and tripometer?
I think the gears I need are 19 white(driven) and 7 purple(drive), anybody have the PN's for these?
By the way I have a 700R4.
</font>
Actual speed appears to be about 10% less than what shows on the speedo (on a T-5), however my guage rpms and speed are perfectly matched for the 3:42 gear ratio. My od/trip meters appear to be .1 mile too fast.
The colors and teeth #s you mentioned are right, but I have different GM part #s
GM 14071731 driven
GM 14090592 drive
This is what the GM parts clerk told me I needed for a 92 Camaro/T-5 3:42.
Unless you are worried about your car "aging" faster on the odometer, you should have no problems.
------------------
92 Camaro RS, LO3, 5-spd, T-tops
Performance:
K&N Open Air Filter, Edelbrock performer TBI intake, Fastchip Prom, Timing +4 degrees, Centerforce clutch, Xact 8mm wires, SLP 1 3/4" Headers (coated), Flowmaster Catback Exhaust, Richmond 3:42 gears, Torsen HD Posi
Sights & Sounds:
Alpine 8030 Alarm System, Valentine One Radar Detector (How did I ever drive without one?), Pioneer DEH 7450 Head Unit w/6-pack CD changer, Pioneer DEQ 7600 Sound Processor, 2 Kenwood KAC-846 Amps powering 2 12" Pro Red subs, 2 Pioneer 6x9 and 2 MTX 4x6 speakers. Z28 grille w/aftermarket lights, MacEwen whiteface gauges
NEXT UP: TBI & Suspension mods
10-15-2001, 05:51 PM
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Car: 1987 Trans Am GTA
Engine: Miniram'd 383, 24X LS1 PCM
Transmission: TH700R4, 4200 stall
Axle/Gears: 9", 4.33:1
<font face="Verdana, Arial" size="2">Originally posted by Pukka:
The colors and teeth #s you mentioned are right, but I have different GM part #s
GM 14071731 driven
GM 14090592 drive
This is what the GM parts clerk told me I needed for a 92 Camaro/T-5 3:42.
</font>
The colors and teeth #s you mentioned are right, but I have different GM part #s
GM 14071731 driven
GM 14090592 drive
This is what the GM parts clerk told me I needed for a 92 Camaro/T-5 3:42.
</font>
------------------
1987 GTA L98 MD8
355, TFS Heads, LT4 Hot Cam
My GTA
The Minnesota F-body Club
[This message has been edited by Matt87GTA (edited October 15, 2001).]
10-15-2001, 09:34 PM
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Car: 1991 Camaro RS
Engine: GMPP 350 HO w/TBI
Transmission: 700R-4
Axle/Gears: 10-bolt w/3.73s
anyone know how much these gears run from GM?
-Brian
------------------
1991 Camaro RS
GMPP 350 HO crate engine - 454 TBI, MSD ignition, SLP exhaust, everything is new
700R4 - 2,400 stall converter, vette servo, shift kit
My car's webpage - z28boy.cz28.com
President - Central New York F-Body Association
Email - z28boy@twcny.rr.com
AIM - "Z28 Boy"
-Brian
------------------
1991 Camaro RS
GMPP 350 HO crate engine - 454 TBI, MSD ignition, SLP exhaust, everything is new
700R4 - 2,400 stall converter, vette servo, shift kit
My car's webpage - z28boy.cz28.com
President - Central New York F-Body Association
Email - z28boy@twcny.rr.com
AIM - "Z28 Boy"
10-16-2001, 11:04 AM
#7
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Car: 92 RS - Fully Restored w/Custom Int
Engine: LO3 with some mods
Transmission: T-5
Axle/Gears: 3.42 Richmond
<font face="Verdana, Arial" size="2">Originally posted by Z28 Boy:
anyone know how much these gears run from GM?
-Brian
</font>
anyone know how much these gears run from GM?
-Brian
</font>
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10-19-2001, 12:36 AM
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Hey guys thanks for the info, I did do a search first, but didn't come up with the correct info.
I love the posi! I definitely get better traction, and I think I gained about 3 or 4mph in the 1320! Very happy with the quality of the gears and how the posi reacts so far. I recommend them to anyone, although I will probably end up replacing the $99 diff. with the HD version. But for the price, it can't be beat.
------------------
89 RS parts car
Daily driver 91 RS auto LO3 70k, 14x3 K&N Open element, cat-back delete, Richmond 3.42's, Zexel Torsion posi.
Coming soon: 350, headers, loudmouth exhaust, gutted cat.
I love the posi! I definitely get better traction, and I think I gained about 3 or 4mph in the 1320! Very happy with the quality of the gears and how the posi reacts so far. I recommend them to anyone, although I will probably end up replacing the $99 diff. with the HD version. But for the price, it can't be beat.
------------------
89 RS parts car
Daily driver 91 RS auto LO3 70k, 14x3 K&N Open element, cat-back delete, Richmond 3.42's, Zexel Torsion posi.
Coming soon: 350, headers, loudmouth exhaust, gutted cat.
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