T5 is going into the IROC soon. Will my drive/driven gears from my 700R4 work? If not, what gears do I need? Thanks.

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The IROC Homepage
<A HREF="http://www.rit.edu/~jli4307/camaro" TARGET=_blank>
View the restoration of an 85 IROC</A>
Custom Thirdgen Subwoofer Enclosures
"I didn't know a bored out Ford could go so slow" -Shenandoah

 

No, the 700R4 and T5 use different gears. Stock for a 3.42 rear end and stock 245/50-16" tires is a 7 tooth purple drive gear and a white 19 tooth driven gear.

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1991 Camaro Z28
5.7L 5-Speed (originally 305)
317 RWHP, 418 RWTQ
13.23 @ 107.62 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Member: SoCal F-Bodies
-=ICON Motorsports=-

 

Is the 7 tooth purple or blue? In reading the archives, I've seen you say both.


------------------

The IROC Homepage
<A HREF="http://www.rit.edu/~jli4307/camaro" TARGET=_blank>
View the restoration of an 85 IROC</A>
Custom Thirdgen Subwoofer Enclosures
"I didn't know a bored out Ford could go so slow" -Shenandoah

 

AFAIK, there's only two drive gears for the T5, the 9 tooth RED and the 7 tooth purple/blue.

 

I have the purple Drive gear and a green 20 tooth driven gear and I also have 3:42's in the rear.



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1986 SC Camaro
Mods: Threw 2.8 in garbage, put in rebuilt
350 .060 over, XE268H Comp cam, Edlebrock
Performer Intake and Edlebrock 600 CFM Carb,
Pete Jackson noisy GearDrive (which sounded
cool for about 5 minutes, now I'm sick of it)
Rebuilt TH350, 3.42 Rear Gears. LCA RLB's.
B&M Mega Shifter.
Now has T5 in it. YES!!!
CenterForce Dual Friction Clutch.

 

Its like a cross between purple and blue.

The 20 tooth gear would work with a 3.42/3.45 rear end if you have taller tires. I have a 7/20 combo in mine with 3.70 gears and 255/50-16" tires. But like I said, stock for 3.42/3.45 is 7 and 19.

 

I'm running 255s on the car, but as soon as I get new tires I'm going back to the right size. These 255s have too much sidewall and look fairly stupid. Anyway, thanks for the info. I'll have to pull the VSS out and peek in there.

------------------

The IROC Homepage
<A HREF="http://www.rit.edu/~jli4307/camaro" TARGET=_blank>
View the restoration of an 85 IROC</A>
Custom Thirdgen Subwoofer Enclosures
"I didn't know a bored out Ford could go so slow" -Shenandoah

 

I'am running the 7/19 tooth combo on my car right now. My rear gear ratio is 3.27 and my tires are the stock 245/50, my speedo couldn't be more bang on then it is now, I also used a GPS unit to clock my speed and I was only 1 km/h fast.

Now from what people tell me and from a GM chart I saw awile back the stock combo for 3.42/3.45 ratio is 7/20 tooth.

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89 T-Top GTA 350 5-speed (soon to be 6-speed)
(Jet hot coated)1 3/4 SLP headers,flowmaster force 2,no cat's,SLP cold air,MSD 6al,march pulleys,ported plenum,air foil,B&M ripper shifter,180 stat,alston SFC,spohn LCA relocation brackets,ES LCA and Panhard bushings,free mods.

0-60 5.2s
Track Time
60' 2.049
E.T. 14.14@96.7MPH (2270 FT)
13.76@99.4MPH corrected

 

Part numbers for your application:

GM 14071731
GM 14090592

Not sure what the exact teeth counts are, but the colors mentioned in the previous posts are correct.

Parts cost was approx $22 from GM. Hope this helps.

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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

 

My info says 7/18 for a 3.23/3.27 and a T5. My car came with 3.42's, and the speedo gears were 7 and 19.

 

I'am pritty sure GM never made a electric speedo 18 tooth driven gear for are cars but maybe the cable guys have it I dont know. Just try both and see witch one works for you.

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89 T-Top GTA 350 5-speed (soon to be 6-speed)
(Jet hot coated)1 3/4 SLP headers,flowmaster force 2,no cat's,SLP cold air,MSD 6al,march pulleys,ported plenum,air foil,B&M ripper shifter,180 stat,alston SFC,spohn LCA relocation brackets,ES LCA and Panhard bushings,free mods.

0-60 5.2s
Track Time
60' 2.049
E.T. 14.14@96.7MPH (2270 FT)
13.76@99.4MPH corrected

 

From my info, which could be incomplete, I have:

Drive gears: 6T, 7T, 8T, 9T
Driven gears: 19T, 20T, 21T, 22T

For the 3.27 gearing with 245 tires, the actual driven gear is 17.99, or 18. But the 7/19 combo would give better breathing room for error, as stated before with the GPS.

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1989 IROC-Z 5.7L
NOS 5151 150HP kit
ProBuilt 700R4, PI Vigilante 2800 stall lockup
Baer Brakes 12" Sport System

 

Originally posted by bhaas
"I have the purple Drive gear and a green 20 tooth driven gear and I also have 3:42's in the rear."

my car came with a 9-bolt rear with 3.45s and it has the same combo 20 tooth green (light blue is what it looks like to me)and the purple 7 tooth gear.