View Poll Results: What gears for my car..read below for info.
3.73
63
27.51%
4.10
166
72.49%
Voters: 229. You may not vote on this poll
Help deciding 3.73 or 4.10 for my 10 bolt
06-08-2005, 11:41 PM
#1
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Help deciding 3.73 or 4.10 for my 10 bolt I have a 99 TA with a M6 and stock 10 bolt 3.42 rear. The next upgrade is either 3.73 or 4.10 gears, but I am unsure which. The problem is that I am not running the stock tire height (~25.5") as my tire is a 275/40/18 (~26.7"). Now, with the taller tire my overall ratio is going to be smaller so I'm guessing to make up the difference to go with the 4.10 gears. My car seems to accelerate slower than before the taller tire which is understandable, but are the 4.10 gears going to be too much for a daily driver? My car rarely if ever sees the track so that's not my concern. Only a daily commute/fun speed machine. The reason why I am running the taller tire is because the 275/35/18 (25.6") rode to rough for me and the taller 40 series tire fixed that problem. So, let the poll and advice begin and help me make the right choice the first time.
06-09-2005, 12:05 AM
#2
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I believe that you should be running 3.73 already in your stock TA?!?!? If I am not mistaken, but even though if you are currently running 3.42's there is no real difference and not much of an upgrade from 3.42's to 3.73's!!! Even with your car being a daily driver, when we are in 6th on the freeway, we are @ 1800-2000 rpm on the freeway, with 4.11's we should be good, and it will pick up quicker too!!! I agree, mine is a daily driver too, and with the 4.11's you will feel it more
06-09-2005, 09:19 AM
#4
Definately 4.10. Only thing that takes getting used to is the huge gap between 5th and 6th. You dont realize its there till you switch in and out of 5 and 6 more often. With the taller tires you will of course cut down on the severity of the 4.10s. Im still running stock tire height with my 4.10s in a daily driver (80+ miles daily) in a mixture of heavy bumper to bumper traffic and highway speeds. My gas milage hasnt even suffered too much because i spend more time in 6th where I used to be in 5th before.
06-09-2005, 09:49 AM
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Well, it looks as if the 4.10s are the best choice. How much easier are the 4.10s going to break than the 3.42s? I don't lauch hard from a stop and I always have on the street tires.
06-09-2005, 10:00 AM
#6
With street tires, dont worry about it unless you get some serious wheel hop. If you run stickies, just make sure you dont do clutch dumps. Slip the clutch from 2K as you roll into the gas. With the 4.10s you dont bog the way that you do with the stock 3.42s.
06-09-2005, 10:06 AM
#7
a 10 bolt should NOT have a gear that size in it.. Your rear will defintely break on you! My friend did it in his SS camaro with bigger axles, auburn posi, and all the works.. 2 good hard launches on it.. he broke the ring gear teeth and broke his posi unit that claims to handle "500 HP" and he has been waiting on the warranty for that for about 6 weeks now.. Your choice though.. he said it made a huge difference in his car while it lasted.. but he is going back to 3.42's
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06-09-2005, 03:38 PM
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Well, I raced another 99 TA LS1 M6 today (same tires as mine too) stock everything except he had 4.10 gears which was his only mod. His car was neck to neck with mine until we got around 90 MPH (from 45 mph roll). My car then pulled on his about 1-1.5 car lengths then we ran out of room. His stock everything with 4.10 gears matched my headers, true duals, UD pulley until the higher speeds. WOW, what a difference 4.10s make to a car. I drove his and couldn't believe how much easier it was to break the rear end loose when I stomped it.
06-09-2005, 04:07 PM
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So, why is it that GM makes 4.10 and 4.11 gears for our stock 10 bolt rear. There would be no difference in performance right.
I looking at buying a set of GM OEM used 4.11 gears with a 9 tooth pinion and 37 tooth ring gear. What are these worth used?
I looking at buying a set of GM OEM used 4.11 gears with a 9 tooth pinion and 37 tooth ring gear. What are these worth used?
Last edited by UnleashedBeast; 06-09-2005 at 04:13 PM.
06-09-2005, 04:17 PM
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GuitsBoy, you have been worlds of help. I will steer away from the 4.11 due to potential noise and buy the 4.10 instead. Now I have to find some OEM GM cheap. I don't want gear whine at all, but that might be a sacrifice that has to be made for 4.10 gears.
06-09-2005, 04:19 PM
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Originally Posted by LS1_PNYTAMR
4.10 go big or go home...... richmond 4.10's are stronger then motives btw
Last edited by UnleashedBeast; 06-09-2005 at 04:38 PM.
06-09-2005, 04:21 PM
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go with 4.10 i had 3.73s in mine and i want more bottom end. it's my daily driver too.
my motive 3.73s did wine but it wasn't that bad. i'm fixin to put a motive 4.10 in
my motive 3.73s did wine but it wasn't that bad. i'm fixin to put a motive 4.10 in
06-09-2005, 04:26 PM
#17
It is my opinion that richmond does not make good gears. It is true that strictly speaking rockwell hardness, richmods are among the hardest metal you can find these gears mad out of. However the harder the metal, the more brittle it tends to be, and the louder it is as the gears mesh. Not to mention their engineering and actual machining of the teeth are not of the same caliber as some others. I prefer the OEM GM gears first and foremost (theyre made by motive in the USA), secondly I like the italian made motives, followed by strange. New era performance has GM OEM 4.10s on sale for 160 all the time. Thats where i got mine. I set mine up correctly and have zero audible whine, and my exhaust is not that loud that it covers it up. I have not run sticky tires however. When you get your gears setup, ask to set them up on the tight side, like .005 to .007 backlash. Been working well for me thus far.
06-09-2005, 04:30 PM
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Originally Posted by GuitsBoy
It is my opinion that richmond does not make good gears. It is true that strictly speaking rockwell hardness, richmods are among the hardest metal you can find these gears mad out of. However the harder the metal, the more brittle it tends to be, and the louder it is as the gears mesh. Not to mention their engineering and actual machining of the teeth are not of the same caliber as some others. I prefer the OEM GM gears first and foremost (theyre made by motive in the USA), secondly I like the italian made motives, followed by strange. New era performance has GM OEM 4.10s on sale for 160 all the time. Thats where i got mine. I set mine up correctly and have zero audible whine, and my exhaust is not that loud that it covers it up. I have not run sticky tires however. When you get your gears setup, ask to set them up on the tight side, like .005 to .007 backlash. Been working well for me thus far.
GuitsBoy, you da man and thanks a million. 
Last edited by UnleashedBeast; 06-09-2005 at 04:41 PM.
06-09-2005, 04:49 PM
#20
Hmm... They used to list those motives in 3.42 and 3.73, but without 4.10 available from the pulldown. Then they had the OEM GMs available as a seperate item altogather, only in 4.10 flavor. I dont know why its different now on their page. You may want to call up new era and ask them if theres any difference. I would suspect theyre the same or atleast very similar products being as theyre made by the same manufacturer. FWIW my gears came in a Motive branded box that said made in USA.