Results 1 to 16 of 16

3.73 gears are now in

This is a discussion on 3.73 gears are now in within the Drivetrain forums, part of the LSx Technical Help Section category; the black formula. i was asked if i wanted to do some more testing for the company i did the ...

  1. #1
    Senior Member mrr23's Avatar
    Join Date
    Jul 2005
    Location
    orlando, fl
    Posts
    7,134

    dark bowling green
    2000 corvette

    3.73 gears are now in

    the black formula. i was asked if i wanted to do some more testing for the company i did the 4.10 tests for through vinci high performance. well, i couldn't pass up the opportunity to try a different ratio. i'll be dynoing and swapping out about 6 sets of 3.73 gears. all from different manufacturers. the company that wants the wear testing done, does a special processing to the gears. that's why they want dyno and wear testing done. they want about 500 miles on them. and try to do the swap at the rate of once a week. 6 gear sets in 6 weeks. and 3000 miles in total. here's some pics i took while doing the swap today.
    http://www.stealthram.com/gearswap.htm

  2. #2
    BlackHawk T/A
    Guest
    Are they paying for all your gas? Wow...

    And how are gears going to show much wear after only 500 miles? You better put them through hell...ask them for some sticky tires too...

  3. #3
    Senior Member mrr23's Avatar
    Join Date
    Jul 2005
    Location
    orlando, fl
    Posts
    7,134

    dark bowling green
    2000 corvette

    yes. paying for gas and time driving. i get to keep the last set of gears.

  4. #4
    Senior Member mrr23's Avatar
    Join Date
    Jul 2005
    Location
    orlando, fl
    Posts
    7,134

    dark bowling green
    2000 corvette

    update. on the 4th gear set. got to finish up by nov 30th. gears will be on display at PRI on dec 1-3.

  5. #5
    artchvz
    Guest

    Help

    what should i go with on my 99 camaro 3.73 or 4.10. I really don't want to change my 17" SS Rims on stock tires.

  6. #6
    Senior Member mrr23's Avatar
    Join Date
    Jul 2005
    Location
    orlando, fl
    Posts
    7,134

    dark bowling green
    2000 corvette

    auto = 3.73
    manual = 4.10

  7. #7
    artchvz
    Guest

    motive gears

    Thanks mrr23? are motive gears a good brand to go with?

  8. #8
    Senior Member mrr23's Avatar
    Join Date
    Jul 2005
    Location
    orlando, fl
    Posts
    7,134

    dark bowling green
    2000 corvette

    they are a good brand. i have AAM in both cars now.

  9. #9
    artchvz
    Guest
    thanks

  10. #10
    Tech Junkie hammertime's Avatar
    Join Date
    Nov 2005
    Location
    Belleville, IL
    Posts
    400

    Pewter Metallic
    2001 Camaro SS

    mrr23,

    Having done dyno tests on the gears, is there a difference in rwhp between two different ratios? I thought the dyno operator was supposed to key in the correct ratio to get the number calculated right.

    I've seen people say that higher numeric gears will make your car gain/lose power. I understand the difference in the amount of power it takes to turn a 9" or 12-bolt.

    Just curious, if thats something that they let you know about...

    Thanks!
    Hammer - hammertime.us
    2001 Light Pewter Metallic Camaro SS, 6 speed
    K&N, SLP Lid, SLP y-pipe, GMMG cat-back, Lou's Short Stick - more to come!

  11. #11
    Senior Member mrr23's Avatar
    Join Date
    Jul 2005
    Location
    orlando, fl
    Posts
    7,134

    dark bowling green
    2000 corvette

    you do not input gear ratio on a dynojet. it calulates that via rpm/mph. you'll notice on a dynojet dyno sheet in the comments section rpm/mph = xxxx on a mustang dyno, you input gear ratio.

    here's my post i did about power loss/gains from swapping gears
    http://www.ls1.com/forums/showthread...=6281#post6281
    Last edited by mrr23; 01-16-2006 at 07:43 PM.

  12. #12
    Tech Junkie hammertime's Avatar
    Join Date
    Nov 2005
    Location
    Belleville, IL
    Posts
    400

    Pewter Metallic
    2001 Camaro SS

    That link kept taking me back to this thread...

    I think I found what you were refering to though:
    dyno results swapping from 3.23 to 4.10 auto

    Good info!

  13. #13
    Senior Member mrr23's Avatar
    Join Date
    Jul 2005
    Location
    orlando, fl
    Posts
    7,134

    dark bowling green
    2000 corvette

    fixed.

    now, i'll add the last syno where i went from 4.10 to 3.73

  14. #14
    artchvz
    Guest
    So if im reading this right you got more power and torque from the 3.73 vs the 4.10

  15. #15
    Senior Member mrr23's Avatar
    Join Date
    Jul 2005
    Location
    orlando, fl
    Posts
    7,134

    dark bowling green
    2000 corvette

    yep. but, will it get me quicker down the track???? haven't taken the black car out since the 3.73 swap due to trans issues still. that's coming real soon. on the bottle, i had to go into 4th gear to finish the run about 60 ft before the end. which, i think, is why my mph is so much lower compared to the wife's car. 117.67 vs 120.96. usually, the black car is 2 mph less given the same et.

  16. #16
    Tech Junkie hammertime's Avatar
    Join Date
    Nov 2005
    Location
    Belleville, IL
    Posts
    400

    Pewter Metallic
    2001 Camaro SS

    I can see it now. People will be rushing to get 2.73's in their car so they can claim to have a factory freak.

    Good info though, interesting to see the relationship between measured HP and gearing.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Help: about to change my plastic gears for brass gears
    By edrvsqz1980 in forum General Help
    Replies: 17
    Last Post: 07-18-2009, 06:09 PM
  2. need gears
    By hamptonwsk in forum Parts Wanted / Trade
    Replies: 7
    Last Post: 07-09-2008, 10:17 PM
  3. 4:10 Gears (New) 10 Bolt. 3.08 Gears Low Miles. 12 Bolt.
    By 991lez in forum Parts For Sale / Trade
    Replies: 2
    Last Post: 04-14-2006, 02:03 PM
  4. Stock 2.83 gears to 3.73 gears?
    By 97formula in forum Automatic Transmission
    Replies: 3
    Last Post: 11-20-2005, 09:36 AM
  5. 3:73 gears, 3:42 gears, clutch, flywheel, plug wires
    By ls1hater in forum Parts For Sale / Trade
    Replies: 4
    Last Post: 08-16-2005, 07:15 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •