Gears & Axles Driveshafts | Rearends | Differentials | Gears | 12 Bolt | 9 Inch | Dana

what's the point

Thread Tools
 
Search this Thread
 
Old 06-12-2012, 08:49 AM
  #1  
Staging Lane
Thread Starter
 
daniel(sleepysleepy)'s Avatar
 
Join Date: Jun 2012
Location: Fort Stewart.
Posts: 73
Likes: 0
Received 0 Likes on 0 Posts
Default what's the point

hate to sound like an idiot but what's the point in changing gears


Posted from LS1Tech.com App for Android
Old 06-12-2012, 10:15 AM
  #2  
Staging Lane
 
02chickenhawk's Avatar
 
Join Date: Feb 2012
Location: Colorado Springs
Posts: 87
Likes: 0
Received 0 Likes on 0 Posts
Default

Only stupid question is the one not asked. However, there is a pretty good search function.

Changing gears is for various applications.

Example: if you use your car for drag racing, and have 3.73 gears with a 6 speed car and cross the finish line at 4500 rpm, might want to get the full use of your motor and change to 4.11 gears and cross the line at 6k rpm in fourth gear.

Let's say your more into open road racing, 4.10 gears are probably not the best choice, especially if your in the 140 mph class. Something like this, your factory gearset is more appropriate since you don't want to run 5k rpm for 120 miles.
Old 06-12-2012, 10:24 AM
  #3  
TECH Veteran
iTrader: (4)
 
FirstYrLS1Z's Avatar
 
Join Date: Aug 2004
Location: Euclid,Ohio
Posts: 4,155
Received 129 Likes on 114 Posts

Default

on the street,gears are an 'equalizer'. 'Fear the Gear'. Torque increase to tires.
For example,let's take a 300 hp 300 ft.lbs. with 3.42 gears. That's 1026 ft.lbs. to the axles (horsepower does not increase but rotational force does). Now with 4.10 gears,that's 1230 ft.lbs. to the axles. More rotational force,more ability to accelerate more quickly.
Old 06-12-2012, 11:14 AM
  #4  
Staging Lane
Thread Starter
 
daniel(sleepysleepy)'s Avatar
 
Join Date: Jun 2012
Location: Fort Stewart.
Posts: 73
Likes: 0
Received 0 Likes on 0 Posts
Default

so what would yall recommend I do take down the strip I spray Nitrous to but I also run the streets were at times I can usually beat someone before I het 80 mph but in some cases I have hit 140+


Posted from LS1Tech.com App for Android
Old 06-12-2012, 12:38 PM
  #5  
TECH Veteran
iTrader: (4)
 
FirstYrLS1Z's Avatar
 
Join Date: Aug 2004
Location: Euclid,Ohio
Posts: 4,155
Received 129 Likes on 114 Posts

Default

can't answer that question until you tell us about your car !!! what it is and mods.
Old 06-12-2012, 12:46 PM
  #6  
Staging Lane
Thread Starter
 
daniel(sleepysleepy)'s Avatar
 
Join Date: Jun 2012
Location: Fort Stewart.
Posts: 73
Likes: 0
Received 0 Likes on 0 Posts
Default

ls1 stock internals intake lid 100 shot Nitrous moded exhaust 330hp motor 440 hp spray soon to change will be looking at 500+


Posted from LS1Tech.com App for Android
Old 06-12-2012, 01:13 PM
  #7  
Staging Lane
Thread Starter
 
daniel(sleepysleepy)'s Avatar
 
Join Date: Jun 2012
Location: Fort Stewart.
Posts: 73
Likes: 0
Received 0 Likes on 0 Posts
Default

2001 z28 but has trans am rear end


Posted from LS1Tech.com App for Android
Old 06-12-2012, 02:02 PM
  #8  
TECH Resident
iTrader: (1)
 
Big Al's Avatar
 
Join Date: May 2005
Posts: 970
Likes: 0
Received 1 Like on 1 Post
Default

It's a good way to end up needing a new rear axle

Change gears to allow your car to accelerate quicker. If you were gearing just for the 1/8 or 1/4 mile you would try to select the gear for just that use. A street driven car has to be able to cruise down the highway too. So you compromise.

Al 95 Z28 W/4.30's
Old 06-12-2012, 02:12 PM
  #9  
Staging Lane
Thread Starter
 
daniel(sleepysleepy)'s Avatar
 
Join Date: Jun 2012
Location: Fort Stewart.
Posts: 73
Likes: 0
Received 0 Likes on 0 Posts
Default

I will take that in consideration



Posted from LS1Tech.com App for Android
Old 06-12-2012, 02:21 PM
  #10  
TECH Veteran
iTrader: (4)
 
FirstYrLS1Z's Avatar
 
Join Date: Aug 2004
Location: Euclid,Ohio
Posts: 4,155
Received 129 Likes on 114 Posts

Default

transmission ??? ratio in that transam rearend ??? Suspension ???
Old 06-12-2012, 02:35 PM
  #11  
Staging Lane
Thread Starter
 
daniel(sleepysleepy)'s Avatar
 
Join Date: Jun 2012
Location: Fort Stewart.
Posts: 73
Likes: 0
Received 0 Likes on 0 Posts
Default

transmission is the stock automatic the 4l60e the rear end is the same as the camaros don't.really know.what it is to be honest


Posted from LS1Tech.com App for Android
Old 06-12-2012, 02:36 PM
  #12  
Staging Lane
Thread Starter
 
daniel(sleepysleepy)'s Avatar
 
Join Date: Jun 2012
Location: Fort Stewart.
Posts: 73
Likes: 0
Received 0 Likes on 0 Posts
Default

suspension me adjustable pan hard bar and torquesion bar sorry if that doesn't sound correct I'm not entirely vehicle savy but I'm learning


Posted from LS1Tech.com App for Android
Old 06-12-2012, 03:53 PM
  #13  
TECH Veteran
iTrader: (4)
 
FirstYrLS1Z's Avatar
 
Join Date: Aug 2004
Location: Euclid,Ohio
Posts: 4,155
Received 129 Likes on 114 Posts

Default

stock 4L60E with,assuming,stock convertor.
it's really best to find out what your rear gear is in that transam rearend,if it came from a 6speed car,it's a 3.42 if it came from an auto car,it could be 2.73 or 3.23.
it seems you're concerned about what rearend gear ratio would be optimal for you,BUT you're discussing 2 different horsepower levels and also nitrous.
high horsepower/nitrous,you don't need a 'lot of gear'(3.73/4.10) as the horsepower/nitrous is your 'equalizer'.
The OEM 7.625" 3.23 & 3.42 are very strong gears compared to the aftermarket 3.73,3.90,4.10 as they are only 7.5". and none of those 5 are as strong as an aftermarket 12 bolt rearend.
what are/is your goal/intended purpose ? 1/8,1/4,street fun,roll racing ?

and when you start adding sticky tires for a good launch,the rear won't last very long.
Old 06-12-2012, 03:56 PM
  #14  
Staging Lane
Thread Starter
 
daniel(sleepysleepy)'s Avatar
 
Join Date: Jun 2012
Location: Fort Stewart.
Posts: 73
Likes: 0
Received 0 Likes on 0 Posts
Default

street fun mainly but I do go to the strips every once in a while


Posted from LS1Tech.com App for Android
Old 06-13-2012, 07:26 AM
  #15  
TECH Fanatic
 
LS-ONE_DAY's Avatar
 
Join Date: Jun 2007
Location: Westminster, MD
Posts: 1,062
Likes: 0
Received 2 Likes on 2 Posts

Default

S60 with 9.75" ring gear FTMFW lol throw 1000+hp at it, it won't care.

Seriously though, imo it's not worth swapping gears in the 10-bolt. I don't want to waste money on the 10-bolt making it weaker (because the gear strength isn't as good as OEM) when I can just save that money and put it towards a better rear end that comes with better gears.

I'm planning on either a 9" or an S60 with between 3.50-3.73 gears. For now, while they aren't super fun, I'll keep my 2.73 ten-bolt, and enjoy some savings on gas as well as not worrying about putting money into the stock unit.
Old 06-13-2012, 08:53 AM
  #16  
Staging Lane
Thread Starter
 
daniel(sleepysleepy)'s Avatar
 
Join Date: Jun 2012
Location: Fort Stewart.
Posts: 73
Likes: 0
Received 0 Likes on 0 Posts
Default

alright thanks so it boils down with my use and rear end stay stock


Posted from LS1Tech.com App for Android




All times are GMT -5. The time now is 09:54 PM.