What gear do I have?
12-22-2003, 09:14 PM
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What gear do I have?
I know i have a 10 bolt but does that actually help me find out what gears i have inside?
Also, can someone give me a run down on how important changine over the gears are?
Also, can someone give me a run down on how important changine over the gears are?
12-22-2003, 09:51 PM
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Car: 4
Engine: 6
Transmission: 5
No. 10-bolt rears in these cars came with anything from a 2.73 grocery-cart gear to 3.73s.
Take off the cover and look. It's the only way to know for sure. People will pipe up and tell you all about decoding the "codes", or look at your RPOs, or this motor only came with that gear, or spin the tires and count the driveshaft revs, or whatever... but all of those things have uncertainties. Take of the cover and look.
The gear ratio is one of the single biggest influences on how a car (car, not motor) runs. Correct gear selection is critical to getting the most out of a car.
Take off the cover and look. It's the only way to know for sure. People will pipe up and tell you all about decoding the "codes", or look at your RPOs, or this motor only came with that gear, or spin the tires and count the driveshaft revs, or whatever... but all of those things have uncertainties. Take of the cover and look.
The gear ratio is one of the single biggest influences on how a car (car, not motor) runs. Correct gear selection is critical to getting the most out of a car.
12-22-2003, 10:40 PM
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Car: '86 Camaro, '02 WRX, '87 K5, '67
Engine: 350 TPI, 2.0turbo, 383 in the works, 289-4BBL, 232, A-head 4-cylinder
Transmission: T56, 5-speed, 700R4, C4, T176, semi-auto 2-speed
Axle/Gears: 3.73, 3.90, 4.88, 3.55, 3.54, 7.00
RB83L69's right. It may have been a 2.73:1 non-posi from the factory, but the car is 13 years old now. It's entirely possible that the rear has ben swapped due to a breakage, or taller gears installed to gain performance. It may even have a posi now.
Pull the cover off and count up the teeth on the pinion and the ring gear. Divide the ring gear count by the pinion gear count and that's your ratio. Some pinions even have the teeth count stamped into the end of them, which simplifies the job a lot.
Take nothing for fact. See for yourself to be sure. A lot can happen in 13 years.
Pull the cover off and count up the teeth on the pinion and the ring gear. Divide the ring gear count by the pinion gear count and that's your ratio. Some pinions even have the teeth count stamped into the end of them, which simplifies the job a lot.
Take nothing for fact. See for yourself to be sure. A lot can happen in 13 years.
12-22-2003, 10:41 PM
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Car: '86 Camaro, '02 WRX, '87 K5, '67
Engine: 350 TPI, 2.0turbo, 383 in the works, 289-4BBL, 232, A-head 4-cylinder
Transmission: T56, 5-speed, 700R4, C4, T176, semi-auto 2-speed
Axle/Gears: 3.73, 3.90, 4.88, 3.55, 3.54, 7.00
I forgot to ask, what exactly do you mean by "changing over the gears"? Do you mean swapping the gears to a different ratio?
12-23-2003, 05:28 PM
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Car: '86 Camaro, '02 WRX, '87 K5, '67
Engine: 350 TPI, 2.0turbo, 383 in the works, 289-4BBL, 232, A-head 4-cylinder
Transmission: T56, 5-speed, 700R4, C4, T176, semi-auto 2-speed
Axle/Gears: 3.73, 3.90, 4.88, 3.55, 3.54, 7.00
Effectively it will be like adding 100 HP to the engine. You could easily shave a full second off your 1/4 mile ET, assuming that you have the saem traction with both setups.
Gear swaps aren't that hard, but they do require patience and a good deal of time to get them totally right. You really should have a bearing press, an inch/pounds torque wrench, and a dial indicator on a magnetic base. A pinion depth tool will cut the time considerably, but isn't absolutely necessary.
You can usually get the swap done for $250 plus parts at a 4X4 shop. It's really up to you to determine if this is worth the insurance or not.
If you are dead set on doing it yourself post back, or PM me and I can give you some pointers.
Gear swaps aren't that hard, but they do require patience and a good deal of time to get them totally right. You really should have a bearing press, an inch/pounds torque wrench, and a dial indicator on a magnetic base. A pinion depth tool will cut the time considerably, but isn't absolutely necessary.
You can usually get the swap done for $250 plus parts at a 4X4 shop. It's really up to you to determine if this is worth the insurance or not.
If you are dead set on doing it yourself post back, or PM me and I can give you some pointers.
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