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4.10s vs 4.30s for the 10 bolt?

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Old 05-06-2011, 12:09 PM
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Originally Posted by Troy5061
What don't you like about them?
Before I decided to try 4.10 gears I searched all the threads I could find so I was aware of the ups and downs going in. Keep in mind I am still breaking them in and have not had the opportunity to run through the gears at full throttle.
When driving normal and shifting at like 2500 rpm you sure do row through the gears til 5th at 35-40 mph....like a 10 speed dump truck. lol. When driving in traffic it seems with the 3.42s I could get away from everyone with alot less drama than with the 4.10s.

Don't get me wrong, I'm an old school guy and back in the day any car worthy of being called a Hot Rod had gears, headers and all the rest. I've just never experienced 4.10 gears with a somewhat wide ratio trans. Way back I had a BBC with a close ratio muncie (2.20 first) with 3.73's so 4.10's with 2.66 first is something new to me.

Last edited by guppymech; 05-07-2011 at 12:42 AM.
Old 05-06-2011, 04:31 PM
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Originally Posted by guppymech
Before I decided to try 4.10 gears I searched all the threads I could find so I was aware of the ups and downs going in. Keep in mind I am still breaking them in and have not had the opportunity to run thru the gears at full throttle.
When driving normal and shifting at like 2500 rpm you sure do row thru the gears til 5th at 35-40 mph....like a 10 speed dump truck. lol. When driving in traffic it seems with the 3.42s I could get away from everyone with alot less drama than with the 4.10s.

Don't get me wrong, I'm an old school guy and and back in the day any car worthy of being called a Hot Rod had gears, headers and all the rest. I've just never experienced 4.10 gears with a somewhat wide ratio trans. Way back I had a BBC with a close ratio muncie (2.20 first) with 3.73's so 4.10's with 2.66 first is something new to me.
You don't have to hit every gear. If I have any decline from a stop, I will let the car start to roll and put it in second, go to fourth, and then to fifth.
Old 06-03-2011, 11:44 PM
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I've had some time to drive the 4.10's now that they're broken in, I thought I would give an update since in post #21 I wasn't so sure.
While 4.10's are definitely fun to drive around town, when on the highway the higher rpm combined with my exhaust drone made my normal cruising speed unusable. Anyhow, I pulled the 4.10 rear and put the 3.42 rear back in. Call it a learning experience.

*Update* I ran back across this thread and thought I'd add a update. I took the 3.42s back out 2 weeks later and put the 4.10 rear in. Once you get used to the 4.10s they're great. Really picked up my 60' at the track, in fact I'm close to ordering a S60 and am considering 4.30s for that.

Last edited by guppymech; 02-13-2012 at 11:59 AM. Reason: New info.
Old 06-04-2011, 05:10 PM
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wut about 390s?
Old 06-04-2011, 07:36 PM
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I just got mine installed today. So far so good, the oem 4.10s I used are way quieter than it was with the 3.42s, actually its silent. The solid pinion spacer made the install a breeze and im hoping with the solid spacer and the TA girdle it will support it some. The one thing that does scare me though is how much smaller the 4.10 pinion is compared to the 3.42 pinion, I should have taken a picture, it is way smaller. Driveability seems better though, I no longer have to slip the **** out of the clutch to get it rolling. All I have to do is let the clutch out and it goes now. I havent been able to beat on it yet because the gears and bearings need to break in. I need to get my speedo fixed to
Old 06-04-2011, 11:56 PM
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Originally Posted by Troy5061
I just got mine installed today. So far so good, the oem 4.10s I used are way quieter than it was with the 3.42s, actually its silent. The solid pinion spacer made the install a breeze and im hoping with the solid spacer and the TA girdle it will support it some. The one thing that does scare me though is how much smaller the 4.10 pinion is compared to the 3.42 pinion, I should have taken a picture, it is way smaller. Driveability seems better though, I no longer have to slip the **** out of the clutch to get it rolling. All I have to do is let the clutch out and it goes now. I havent been able to beat on it yet because the gears and bearings need to break in. I need to get my speedo fixed to
very nice, i just ordered the 390s and cant wait, how long do u have to wait for the gears to break in?
Old 06-05-2011, 07:19 AM
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Originally Posted by Midnight00SS
wut about 390s?
There's really no reason to go with anything less then 4.10's with an m6. gears break in after a few heat cycles btw
Old 06-05-2011, 09:21 AM
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Originally Posted by Midnight00SS
very nice, i just ordered the 390s and cant wait, how long do u have to wait for the gears to break in?
From what my installer said its really the bearings that need break in not the gears themselves. He said to just take a few short drives and let it cool down and it should be good to go. Im going to take it easy for 500 miles or so though. Im not to worried about it though, how many people test driving new Camaros take it easy on the car LOL.
Old 06-05-2011, 04:11 PM
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Originally Posted by mtuggle86
There's really no reason to go with anything less then 4.10's with an m6. gears break in after a few heat cycles btw
Originally Posted by Troy5061
From what my installer said its really the bearings that need break in not the gears themselves. He said to just take a few short drives and let it cool down and it should be good to go. Im going to take it easy for 500 miles or so though. Im not to worried about it though, how many people test driving new Camaros take it easy on the car LOL.
yea thats tru, 390s are only alil less, and i heard the 390s are alil stronger cause they have less teeth and are smaller,


ok cool, im sure i gotta do the same soon
Old 06-05-2011, 07:01 PM
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Originally Posted by Midnight00SS
yea thats tru, 390s are only alil less, and i heard the 390s are alil stronger cause they have less teeth and are smaller,


ok cool, im sure i gotta do the same soon
Less teeth mean the the gear is weaker in most cases even though the teeth are larger. Either way with a 7.625 ring gear people are spliting hairs comparing 4.10's vs 3.90's in terms of strength.

anyways I hope you like your 3.90's
Old 06-06-2011, 11:17 AM
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Originally Posted by mtuggle86
Less teeth mean the the gear is weaker in most cases even though the teeth are larger. Either way with a 7.625 ring gear people are spliting hairs comparing 4.10's vs 3.90's in terms of strength.

anyways I hope you like your 3.90's
yea we will see how it goes
Old 06-11-2011, 09:50 PM
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Any updates? I'm contemplating on Motive 3.90's or GM 4.10s because I'm getting my rear-end rebuilt and might as well put in some gears.
Old 06-12-2011, 09:06 AM
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Originally Posted by HoLLo
Any updates? I'm contemplating on Motive 3.90's or GM 4.10s because I'm getting my rear-end rebuilt and might as well put in some gears.
M6 no less then 4.10 gears really.
Old 06-12-2011, 09:59 AM
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Went wit the 390s
Old 06-12-2011, 01:12 PM
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along w/the info others above have posted, I'm running 4.30:1 rear gears and have 6-8 1/8th mile passes. Starting in 2nd gear, I'm literally hitting the rev limiter (6600 rpm) at the line twice with my M6 on street tires. On the highway, I'm turning 1950+/- 25 at 70mph. Economy on the highway is fine even with my .642/.644 lift cam... Either way, 4.10 or 4.30 with your t56, you'll be lovin' it
Old 06-14-2011, 08:38 PM
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Originally Posted by HoLLo
Any updates? I'm contemplating on Motive 3.90's or GM 4.10s because I'm getting my rear-end rebuilt and might as well put in some gears.
I have pretty much the same cam. Go 410s it's worth it
Old 06-14-2011, 11:06 PM
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Originally Posted by Duffster
along w/the info others above have posted, I'm running 4.30:1 rear gears and have 6-8 1/8th mile passes. Starting in 2nd gear, I'm literally hitting the rev limiter (6600 rpm) at the line twice with my M6 on street tires. On the highway, I'm turning 1950+/- 25 at 70mph. Economy on the highway is fine even with my .642/.644 lift cam... Either way, 4.10 or 4.30 with your t56, you'll be lovin' it
You leave the line in 2nd gear? Is 1st gear that worthless?
Old 06-15-2011, 01:21 AM
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i have 456 and will spin half of 3rd and chirp 4th on 3/4 tank, there richmand gears love them but are noisey for 10 bolt i hear dont want to go more than 410 even thou hard launches pl say rear end break correct me if wrong...
Old 06-15-2011, 11:24 AM
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Originally Posted by BFarrier
i have 456 and will spin half of 3rd and chirp 4th on 3/4 tank, there richmand gears love them but are noisey for 10 bolt i hear dont want to go more than 410 even thou hard launches pl say rear end break correct me if wrong...
Thats a high gear, how short is ur first gear lol?



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