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post #1 of 19 (permalink) Old 02-13-2013, 11:21 AM Thread Starter
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Gears

I ran my fiends 94 formy 6 speed at track and he pulled past me right before end of the quarter. I'm a auto so I was wondering what the best gearing would be to possibly beat him. Both cars are stock with just intake. My car is 94 z28 auto
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post #2 of 19 (permalink) Old 02-13-2013, 12:01 PM
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Quote:
Originally Posted by 94lt1z View Post
I ran my fiends 94 formy 6 speed at track and he pulled past me right before end of the quarter. I'm a auto so I was wondering what the best gearing would be to possibly beat him. Both cars are stock with just intake. My car is 94 z28 auto
No knowing what your current gear ratio is.....I'd say the best gear for daily drivability, gas mileage AND performance would be 3.73 gears.

But hell......I'm a B-body guy, so take that with a grain of salt.

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post #3 of 19 (permalink) Old 02-13-2013, 12:16 PM
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Ya i wouldnt go any higher than 3.73 in a auto its an all around good gear thats what i have im a manual. And once i get my new rear end im goin 4.11s all the way
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post #4 of 19 (permalink) Old 02-13-2013, 12:52 PM
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You probably have 2.73s but you could possibly have 3.23s. Look on the sticker on your door that has all the couple letter codes and look for GU5 or GU2. Then you'll know if you have 3.23s or 2.73s.


1996 Z28 t-top
355ci 11.5:1 Speed Pro pistons, Scat forged I beams, Ported heads, LE 232/240 578/.574 110LSA, Lunati dual valve spring kit, Scorpion 1.6rr, 3.73s, TCI 3800 stall, Pacesetter LTs, TSP Rumbler, K&N CAI, CSR Electric water pump, SLP 160* thermostat, Energy Suspension poly mounts, brake proportioning valve, line lock, !A.I.R, !EGR, !A/C, !ABS, !Cruise Control, !Front Bumper bar, gutted interior, battery relocation, etc
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post #5 of 19 (permalink) Old 02-13-2013, 08:34 PM
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I am close to a deal on a 3.42. I think it will make a big difference from my 2.73. I like the idea of just bolting up the rear and I think if I put im 3.73s it will be time for another rear rather quickly lol. Also, gas is $4.00 plus.

99 a4 w/ws6 a/m hood, slp cai & loudmouth catback.

The ex 69 Camaro vert that was awesome but.
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post #6 of 19 (permalink) Old 02-13-2013, 08:38 PM
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I am close to a deal on a 3.42. I think it will make a big difference from my 2.73. I like the idea of just bolting up the rear and I think if I put im 3.73s it will be time for another rear rather quickly lol. Also, gas is $4.00 plus.
A 3.42 rear end you mean? You would see a big improvement with them over the 2.73s.


1996 Z28 t-top
355ci 11.5:1 Speed Pro pistons, Scat forged I beams, Ported heads, LE 232/240 578/.574 110LSA, Lunati dual valve spring kit, Scorpion 1.6rr, 3.73s, TCI 3800 stall, Pacesetter LTs, TSP Rumbler, K&N CAI, CSR Electric water pump, SLP 160* thermostat, Energy Suspension poly mounts, brake proportioning valve, line lock, !A.I.R, !EGR, !A/C, !ABS, !Cruise Control, !Front Bumper bar, gutted interior, battery relocation, etc
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post #7 of 19 (permalink) Old 02-13-2013, 09:43 PM
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Quote:
Originally Posted by FastLT1 View Post
A 3.42 rear end you mean? You would see a big improvement with them over the 2.73s.
Lol, thanks for reading my mind.

99 a4 w/ws6 a/m hood, slp cai & loudmouth catback.

The ex 69 Camaro vert that was awesome but.
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post #8 of 19 (permalink) Old 02-13-2013, 10:20 PM
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Easy way to tell (at least with the pontiacs) is if you have the 150 mph speedo you have 3.23 gears stock.

94 Formula, .224/.234 .561/.576 110 cam, 1.6 RR,LE2 Heads, AZ&M headers, 54mmTB, 3000 Stall. New Stall and spray coming. Tuned by gregrob.
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post #9 of 19 (permalink) Old 02-14-2013, 04:33 PM
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Depends on tranny to.. I run 4.11 in my auto with .no issues , I'm not about to drive it on a long trip .. if you wanna be able to take it on longer trips too IDE stay w 3.73.. If memory is correct I gained over a half second going from 3.23 to 4.11
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post #10 of 19 (permalink) Old 02-14-2013, 09:57 PM
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42 Minutes left 3.73s and Carrier $100-125

GM 10 Bolt 7 5 3 Series 3 73 3 73 Ring and Pinion 3rd Member Spider Gears Set | eBay

93 Z28 T-tops T56 6spd 3.23 Gears,
Mostly Stock.
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post #11 of 19 (permalink) Old 02-14-2013, 10:13 PM
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Thanks bro, i would rather smack in the 3.42 whole housing.

99 a4 w/ws6 a/m hood, slp cai & loudmouth catback.

The ex 69 Camaro vert that was awesome but.
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post #12 of 19 (permalink) Old 02-15-2013, 01:34 AM
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I have a chance to get some used 3.73s cheap but I would have to run the spacer to make them fit in my 2 series carrier. Is the spacer a dumb idea in an already weak rear end?


1996 Z28 t-top
355ci 11.5:1 Speed Pro pistons, Scat forged I beams, Ported heads, LE 232/240 578/.574 110LSA, Lunati dual valve spring kit, Scorpion 1.6rr, 3.73s, TCI 3800 stall, Pacesetter LTs, TSP Rumbler, K&N CAI, CSR Electric water pump, SLP 160* thermostat, Energy Suspension poly mounts, brake proportioning valve, line lock, !A.I.R, !EGR, !A/C, !ABS, !Cruise Control, !Front Bumper bar, gutted interior, battery relocation, etc
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post #13 of 19 (permalink) Old 02-15-2013, 08:04 AM
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I'd just get a 2 series gear set. They'll be stronger than that 3series set with a spacer. Spacer will probably make setting back lash a pain also

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post #14 of 19 (permalink) Old 02-15-2013, 10:40 PM
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3.73 for auto for street/strip and a converter.

He has 3.42s.
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post #15 of 19 (permalink) Old 02-16-2013, 01:33 AM
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Id keep running him at the track eventually ur friends rear will blow from launching. Id do 373s. Yukons are supposed to be pretty good i hear

94 TA GT Stock 350 lt1, cam, exhaust
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