What gears are thicker?
Thread Starter
Registered User
Joined: Jul 1999
Posts: 3,647
From: Winnipeg, Manitoba, Canada
What gears are thicker?
What gear ratios are thicker?
I heard 3.73s were thicker than 3.23s because of the difference in the number of teeth on the pinion. Is this true?
Anyone know how many teeth each gear ratio has on the pinion and ring?
I heard 3.73s were thicker than 3.23s because of the difference in the number of teeth on the pinion. Is this true?
Anyone know how many teeth each gear ratio has on the pinion and ring?
Banned
Joined: Aug 2001
Posts: 3,505
From: looking for a flow bench so Brook and I can race
Re: What gears are thicker?
Originally posted by Gripenfelter
What gear ratios are thicker?
I heard 3.73s were thicker than 3.23s because of the difference in the number of teeth on the pinion. Is this true?
Anyone know how many teeth each gear ratio has on the pinion and ring?
What gear ratios are thicker?
I heard 3.73s were thicker than 3.23s because of the difference in the number of teeth on the pinion. Is this true?
Anyone know how many teeth each gear ratio has on the pinion and ring?
well they will have a smaller raduis
but thickness is independant of gear ratio...
strange seems to have the thickest gears
Registered User
Joined: Dec 2002
Posts: 15
I heard 3.73s were thicker than 3.23s because of the difference in the number of teeth on the pinion. Is this true?
Thread Starter
Registered User
Joined: Jul 1999
Posts: 3,647
From: Winnipeg, Manitoba, Canada
Originally posted by chikn
This is true with GM gears. My 3.73 ring gear was alot thicker than the 3.23. And it is like that because the pinion gear is much smaller in diameter.
This is true with GM gears. My 3.73 ring gear was alot thicker than the 3.23. And it is like that because the pinion gear is much smaller in diameter.
Registered User
Joined: Sep 2002
Posts: 1,158
From: Chicagoland Area
If u get 3 series gears designed for a TWO SERIES carries, they are actually thicker than 3 series gears for a three series carrier. I don't know if this is true with all brands of gears, but I'm pretty sure it is with Richmond and GM Motive.
Registered User
Joined: Sep 2002
Posts: 333
From: Palm Bay, Florida
>>
Regarding the 10-bolt 7-5/8" rear...
The thickness isn't why they fail. What happens is as you increase your ratio (3.73, 4.10, etc...) the diameter of the pinion gets smaller. It's not the diameter that's the problem directly, but what happens is that because the diameter is smaller, you have less teeth meshing between the ring and pinion at any given moment. So fewer teeth are taking the load. Usually what happens is a tooth snaps off, then all hell breaks loose in there as it gets thrown around and chewed up....possible breaking the ring gear, carrier, or more depending on the speed and power of your car when it happens, and where the teeth randomly fall in there.
Luckily, in alot of instances it falls into the "tooth catcher" at the bottom, or stick to the magnet (if you have the stock cover on it). (BTW: The "tooth catcher" is what I call that little valley at the bottom of the differential where the oil seems to gather and wait until you think it's all drained out before it decides to spill out.
)
-Dave C. '97 Z28
The thickness isn't why they fail. What happens is as you increase your ratio (3.73, 4.10, etc...) the diameter of the pinion gets smaller. It's not the diameter that's the problem directly, but what happens is that because the diameter is smaller, you have less teeth meshing between the ring and pinion at any given moment. So fewer teeth are taking the load. Usually what happens is a tooth snaps off, then all hell breaks loose in there as it gets thrown around and chewed up....possible breaking the ring gear, carrier, or more depending on the speed and power of your car when it happens, and where the teeth randomly fall in there.
Luckily, in alot of instances it falls into the "tooth catcher" at the bottom, or stick to the magnet (if you have the stock cover on it). (BTW: The "tooth catcher" is what I call that little valley at the bottom of the differential where the oil seems to gather and wait until you think it's all drained out before it decides to spill out.
)-Dave C. '97 Z28
On permanent vacation
Joined: Aug 2003
Posts: 520
From: Michigan is a decent state.
Originally posted by Gripenfelter
So back to the original question then...
what is the stronger? 3.23s or 3.73s?
So back to the original question then...
what is the stronger? 3.23s or 3.73s?
but assuming equal rpm launches-
wont the 3.73 bring less stress since at X rpm with 3.73s you will be trying going 0-Ymph "intsantly", whereas with 3.23s you will be going to W mph "instantly" and Y < W???