Register now to get rid of these ads!

Hot Rods final drive ratio for burnouts :)

Discussion in 'The Hokey Ass Message Board' started by Gordon Reed, Sep 2, 2019.

  1. Gordon Reed
    Joined: Aug 3, 2019
    Posts: 16

    Gordon Reed

    what’s going on guys, out of curiosity i had a question about final drive/ rear axle gear ratios. i have a 327 small block (originally 250 horsepower) now closer to 350/375 horsepower. in my rear end right now i have 2.73 gears (open diff) and can’t get that one tire to spin for shit. it’s a 225/60/15 tire so it has a bit of meat but still, i thought i’d be able to get it to let loose. i bought a kit that comes with 3.55 gears and a posi that i will be putting in sooner or later. do you guys think that a posi and 3.55 will help or will i still have trouble?


    Sent from my iPhone using H.A.M.B.
     
    1947knuck likes this.
  2. squirrel
    Joined: Sep 23, 2004
    Posts: 43,445

    squirrel
    Member

    The gear ratio will probably help, but the posi will hurt.

    There are a lot of other variables, you know....we don't even know if you have a manual or automatic transmission, what kind of tires you have, what kind of car it is (heavy, light, wagon, T bucket, ????)
     
  3. KoolKat-57
    Joined: Feb 22, 2010
    Posts: 2,816

    KoolKat-57
    Member
    from Dublin, OH

    I think you are off on your horsepower estimate.
    My OT '72 Formula 350 Firebird is rated @ 180 HP and has a 2:73 posi differential, and 245/60 tires.
    It will smoke the tires from a dead stop until it shifts to second gear.
    Really there is no good reason other than to show off to smoke your tires.
    I am not so well off that I want to ruin a rear set of tires any way.
    KK
     
  4. Elcohaulic
    Joined: Dec 27, 2017
    Posts: 522

    Elcohaulic
    Member

    Crank up the initial advance.
     
    Register now to get rid of these ads!

  5. 2OLD2FAST
    Joined: Feb 3, 2010
    Posts: 1,722

    2OLD2FAST
    Member
    from illinois

    Put a motor in it that will break the tires loose at 60 mph ,then you'll be able to do all the burnouts you want ....
     
  6. Deuces
    Joined: Nov 3, 2009
    Posts: 17,704

    Deuces
    Member
    from Michigan

    Burning rubber costs $$$$$....
     
  7. Slopok
    Joined: Jan 30, 2012
    Posts: 2,303

    Slopok
    Member

    Find a water puddle or some gravel and then grow up!
     
  8. Deuces
    Joined: Nov 3, 2009
    Posts: 17,704

    Deuces
    Member
    from Michigan

    Don't think we'll see him again.....
     
  9. Gordon Reed
    Joined: Aug 3, 2019
    Posts: 16

    Gordon Reed

    ouch.. lol i have a power glide, the car is a 65 chevelle sedan.


    Sent from my iPhone using H.A.M.B.
     
    1947knuck likes this.
  10. Gordon Reed
    Joined: Aug 3, 2019
    Posts: 16

    Gordon Reed

    i tried both but haven’t gotten any older


    Sent from my iPhone using H.A.M.B.
     
  11. 65 chevelle,18 years old.Most of us did this at that age.
     
  12. Gordon Reed
    Joined: Aug 3, 2019
    Posts: 16

    Gordon Reed

    power glide in a 65 chevelle malibu sedan


    Sent from my iPhone using H.A.M.B.
     
    1947knuck likes this.
  13. oldolds
    Joined: Oct 18, 2010
    Posts: 2,754

    oldolds
    Member

    There must be something wrong with your motor. It should light up that tire. Have an old guy show you how it is done!
     
    Deuces likes this.
  14. sdluck
    Joined: Sep 19, 2006
    Posts: 2,204

    sdluck
    Member

    PG 273 R and P car stock 1965 chevelle will not spin a tire without a neutral drop
     
    Deuces and loudbang like this.
  15. harpo1313
    Joined: Jan 4, 2008
    Posts: 1,645

    harpo1313
    Member
    from wareham,ma

    Reverse roll comes to mind.
     
    32fenderless, Dino 64 and Deuces like this.
  16. sdluck
    Joined: Sep 19, 2006
    Posts: 2,204

    sdluck
    Member

    That too.
     
    Deuces likes this.
  17. Dooley
    Joined: May 29, 2002
    Posts: 2,562

    Dooley
    Member
    from Buffalo NY

    I have a powerglide with a 300something 350 and 3:70 gears..I can smoke em good.
     
    Deuces likes this.
  18. liliysdad
    Joined: Apr 1, 2013
    Posts: 30

    liliysdad
    Member
    from Oklahoma

    I find it hard to believe that folks don't genuinely enjoy a good, smoky burnout now and again.
     
  19. porknbeaner
    Joined: Sep 12, 2003
    Posts: 41,058

    porknbeaner
    Member

    I had a 3.08 gear in this 4000 pound beast. I did not have my foot on the brakes and was running 235/70/R15 Coopers.

    [​IMG]
     
    Dino 64, FlynBrian, harpo1313 and 3 others like this.
  20. Your problem is the powerglide. Get a turbo 350 or aod
     
    Deuces likes this.
  21. porknbeaner
    Joined: Sep 12, 2003
    Posts: 41,058

    porknbeaner
    Member

    A powerslip will work fine if you boost the line pressure. :D
     
    Deuces likes this.
  22. gimpyshotrods
    Joined: May 20, 2009
    Posts: 16,176

    gimpyshotrods
    Member

  23. porknbeaner
    Joined: Sep 12, 2003
    Posts: 41,058

    porknbeaner
    Member

    with that gear you could roast the tires with a Briggs n Straten :D
     
  24. error404
    Joined: Dec 11, 2012
    Posts: 132

    error404
    Member
    from CA

    stand on both pedals, or get a brake line lock for the fronts only

    Not quite! My old jeep had 5.38 gears, it wouldn't chirp the tires unless I dumped the clutch at full throttle, a blistering 3400 RPM. haha! Fun spinning around on dirt though!!
     
    Last edited: Sep 2, 2019
    Deuces likes this.
  25. Bandit Billy
    Joined: Sep 16, 2014
    Posts: 5,452

    Bandit Billy
    ALLIANCE MEMBER

  26. Gordon Reed
    Joined: Aug 3, 2019
    Posts: 16

    Gordon Reed

    what is the difference that will help with doing burnouts? i understand turbo 350’s have 3 gears instead of 2 but why specifically will it help with burnouts?


    Sent from my iPhone using H.A.M.B.
     
    1947knuck likes this.
  27. I have a 65 Valiant that had a stock 318 and 2.72:1 gears and it had no problem...maybe it’s a Chevy thing.


    Sent from my iPhone using H.A.M.B.
     
  28. And 13” tires! Hence the smiley face.


    Sent from my iPhone using H.A.M.B.
     
    Deuces and Hnstray like this.
  29. And here I thought it was the power the worn out 318 had.


    Sent from my iPhone using H.A.M.B.
     
    Deuces likes this.
  30. Gordon Reed
    Joined: Aug 3, 2019
    Posts: 16

    Gordon Reed

    that one hit deep into my heart


    Sent from my iPhone using H.A.M.B.
     

Share This Page

Register now to get rid of these ads!

Archive

Copyright © 1995-2020 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Terms of Service. Privacy Policy.

Atomic Industry
Forum software by XenForo™ ©2010-2014 XenForo Ltd.