Rear end gears.

Discussion in 'The Garage' started by Bauman_Octane, Feb 16, 2016.

  1. Bauman_Octane

    Bauman_Octane Member

    Messages:
    128
    Likes Received:
    0
    Joined:
    Jan 19, 2016
    Location:
    Edmonton!
    is there a huge difference between 3:73 and 4:10. anyone had both? i want short gears. how bad is it on the highway? i'm usually a Go big or go home but if 4:10 is revving at like 6500RPM on the high way in 5th then hmm?? just put on some drag slicks so need to launch.
     
  2. lutter94

    lutter94 Well-Known Member

    Messages:
    3,011
    Likes Received:
    133
    Joined:
    Apr 11, 2008
    Location:
    South Dakota/Iowa
    With 25.68" tall tires, a T5 trans in 5th gear, and 3.73's, 70 mph is 2300 RPM

    With the same setup and 4.10's, 70 mph is 2550 RPM.

    80 mph is and 2650 and 2900 RPM, respectively.

    I doubt you'll ever see 6500 RPM in 5th gear lol, it would be about 2-3x highway speeds
     
  3. Witzy0070

    Witzy0070 Active Member

    Messages:
    836
    Likes Received:
    1
    Joined:
    Dec 10, 2009
    Location:
    Montana
    I personally wouldn't pay or do the job for the minuscule difference. What gears do you have now?

    (was assuming you had one of the ratios)
     
  4. Bauman_Octane

    Bauman_Octane Member

    Messages:
    128
    Likes Received:
    0
    Joined:
    Jan 19, 2016
    Location:
    Edmonton!
    ya there was some sarcasim in there lol. that isn't to bad actually. i'm alot lower than that right now. all in all that's some pretty good info. i'm thinking 4:10's. aint a daily so **** it.

    and who's to say i don't travle at 2-3 times faster than highway speeds?? lol.
     
  5. Bauman_Octane

    Bauman_Octane Member

    Messages:
    128
    Likes Received:
    0
    Joined:
    Jan 19, 2016
    Location:
    Edmonton!
    ya i got stock gears right now. like 2:75 or something like that.... it's terrible..
     
  6. Orange 94

    Orange 94 Moderator Staff SN95 Supporter

    Messages:
    10,855
    Likes Received:
    387
    Joined:
    Oct 21, 2012
    Location:
    Alberta Canada
    I find 373s perfect for driving around and highway speed.
    Going 120 on the highway I'm not sure I'd want much of a lower gear personally.
     
  7. Thomas_W

    Thomas_W Well-Known Member

    Messages:
    1,478
    Likes Received:
    44
    Joined:
    Jan 25, 2007
    Location:
    Capon Bridge, WV
    What year car and what are your plans?

    if you planning NA or Nitrous, 4:10's for sure

    supercharged or turbo- 3:55

    the downside to 4.10's is you'll be at the point or shifting into 5th at the lights in the bigend of a 1/4 mile. 1/8 mile you'll be going into or already been into 4th. Grantes thats my experience with a 97GT running 4.10's, exhaust, slicks and a 100shot of nitrous launching off the rev limiter with stock suspension
     
  8. lutter94

    lutter94 Well-Known Member

    Messages:
    3,011
    Likes Received:
    133
    Joined:
    Apr 11, 2008
    Location:
    South Dakota/Iowa
    pm me your email address, i'll send an excel doc for calculating engine speeds/gear ratios/tire size/etc.....
     
  9. Bauman_Octane

    Bauman_Octane Member

    Messages:
    128
    Likes Received:
    0
    Joined:
    Jan 19, 2016
    Location:
    Edmonton!
    hmm. thats intresting. rev limiter launching eh. how is the car holding up with that?
     
  10. Bauman_Octane

    Bauman_Octane Member

    Messages:
    128
    Likes Received:
    0
    Joined:
    Jan 19, 2016
    Location:
    Edmonton!
    hmm ya thats looking like the wise choice lol.
     
  11. Bauman_Octane

    Bauman_Octane Member

    Messages:
    128
    Likes Received:
    0
    Joined:
    Jan 19, 2016
    Location:
    Edmonton!
    hey actually i know a site that is pretty good for that. willtheyfit.com being one of them. but thank you very much.
     
  12. Bauman_Octane

    Bauman_Octane Member

    Messages:
    128
    Likes Received:
    0
    Joined:
    Jan 19, 2016
    Location:
    Edmonton!

    oh ya nd my car is 95 gts. and plans for it is to remain a street car. no nos. keepin it n/a and hoping to see 290-300 rwhp eventually.
     
  13. 95opal

    95opal Well-Known Member

    Messages:
    2,030
    Likes Received:
    191
    Joined:
    Jun 21, 2007
    Gear yhe car according to your powerband. Stock headed intake car with 4.10s is a waste. A stout built hci that pulls to 6500 4.10s. Ect ect.
     
  14. Thomas_W

    Thomas_W Well-Known Member

    Messages:
    1,478
    Likes Received:
    44
    Joined:
    Jan 25, 2007
    Location:
    Capon Bridge, WV

    That car was sold over 10 years ago. But when i got rid of it, it rode as nice as the day i got it. It was a fun 8.2x 1/8 mile car.
     
  15. Witzy0070

    Witzy0070 Active Member

    Messages:
    836
    Likes Received:
    1
    Joined:
    Dec 10, 2009
    Location:
    Montana
    You will be happy with 3.73s, and they will play nice with any future power modders such as nitrous or FI.
     
  16. Bauman_Octane

    Bauman_Octane Member

    Messages:
    128
    Likes Received:
    0
    Joined:
    Jan 19, 2016
    Location:
    Edmonton!
    having trouble seeing how that would be a waste? quicker shifts will help most situations. my car pulls way to long in each gear. like sitting there thinking to myself "am i ever going to shift again?" as i watch the tach climb. i would think more to gear your car according to how you want to drive it, how often you want to shift and milage in mind? no?
     
  17. Bauman_Octane

    Bauman_Octane Member

    Messages:
    128
    Likes Received:
    0
    Joined:
    Jan 19, 2016
    Location:
    Edmonton!
    ya going to stay away from nos and fi. i'll proabably get frowned upon for saying this but if i wanted forced induction i would buy a japanese car. i like my n/a v8's. just a matter if i want that extra 0.37 turns to the drive shaft or not lol.
     
  18. Mustanger

    Mustanger Well-Known Member

    Messages:
    2,310
    Likes Received:
    115
    Joined:
    Dec 3, 2006
    Location:
    Southern Oregon
    I always thought that if I loved my N/A V8 I'd be ecstatic over a supercharged one! No?

    Stock SN95's were 2:73 ratio for the most part...I jumped to 3:55's & it made my car so much easier to drive in town & on the freeway I tack 2250RPM or so ...I drove it conservatively breaking the gears in & actually picked up 1MPG...LOL, but just cannot quit having fun now despite my best intentions! One of the top most favorite mods I have done!