Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

what gears should I use with a TH400

Discussion in 'The Garage' started by smokkey1, Feb 15, 2006.

  1. smokkey1

    smokkey1 1/2 ton status

    Joined:
    Jan 7, 2004
    Posts:
    2,677
    Likes Received:
    2
    Location:
    Los Angeles, CA
    I might be getting a killer deal on some brand new 38" swampers from a guy on pirate that's very local to me. anyways, I'm going to have to regear the axles sooner or later. The only time the sub goes on the freeway is to and from the trails and that's it. I'm runnin 36's with 350tbi/th400/np241 and 4.10 gears. So what gears would you guys recommend? I'm thinkin 4.88's.
     
  2. nau81blazer

    nau81blazer 1/2 ton status

    Joined:
    Mar 6, 2004
    Posts:
    329
    Likes Received:
    0
    Location:
    Cincinnati, OH
    4.88's sound pretty good to me.
     
  3. trailblazr81

    trailblazr81 1/2 ton status

    Joined:
    May 27, 2005
    Posts:
    931
    Likes Received:
    0
    Location:
    Hollister, CA
    If no freeway 5.13's :waytogo: Back in the day I knew a guy who ran 5.29's in his Yeep. Had a Mustang 289 and a 4 spd manual with 36's. He'd cruise the freeway at 55 mph.

    What axles??
     
  4. smokkey1

    smokkey1 1/2 ton status

    Joined:
    Jan 7, 2004
    Posts:
    2,677
    Likes Received:
    2
    Location:
    Los Angeles, CA
    not much freeway action for it just to the trail and back. other than that it's manly on the street.
    5.13's crossed my mind but it might be alittle to deep when I do have to go on the freeway. Tt has a 14ff and a 10bolt front. but will be getting a D60 very soon. I'm not going to trow any money at the 10bolt front.
     
  5. trailblazr81

    trailblazr81 1/2 ton status

    Joined:
    May 27, 2005
    Posts:
    931
    Likes Received:
    0
    Location:
    Hollister, CA
    5.13's will put you at about 3000 RPM on the freeway with 38's. In the past Ive done 40 mile blasts at 3200 RPM. Can be a little loud with 450 HP and 40 series Flows, but other than that no probs.
     
  6. onetonbb74

    onetonbb74 1/2 ton status

    Joined:
    Dec 1, 2005
    Posts:
    2,083
    Likes Received:
    2
    Location:
    Campbell, CA
    if the small block is staying id go 5.13.
     
  7. smokkey1

    smokkey1 1/2 ton status

    Joined:
    Jan 7, 2004
    Posts:
    2,677
    Likes Received:
    2
    Location:
    Los Angeles, CA
    yep, the small block is staying.
     
  8. muddybuddy

    muddybuddy 3/4 ton status

    Joined:
    Jan 29, 2004
    Posts:
    8,933
    Likes Received:
    1
    Location:
    Fairfax Station VA
    ive got 5.13s for 42s. i think ud like it better than the 4.88s do it once do it right!!! :-) lock it while ur at it
     
  9. onetonbb74

    onetonbb74 1/2 ton status

    Joined:
    Dec 1, 2005
    Posts:
    2,083
    Likes Received:
    2
    Location:
    Campbell, CA
    38's with a th400, id go 5.13 w/ a sbc
     
  10. smokkey1

    smokkey1 1/2 ton status

    Joined:
    Jan 7, 2004
    Posts:
    2,677
    Likes Received:
    2
    Location:
    Los Angeles, CA
    ok, I guess 5.13's it is :D
    I'm going to pick up the tires on friday.
    I'm runin a spool out back. The front is going to be a D60 that I'm going to be picking up soon.



    on the average what dose a gear install coast just for the labor?
     
  11. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

    Joined:
    May 19, 2001
    Posts:
    45,031
    Likes Received:
    366
    Location:
    Vancouver, WA, USA
    same as with every other trans and every other tire size. 5.13. To this day I kick myself for thinking 4.56s would be a good compromise. Oh well, nothing like spending lots of $ to learn a lesson!

    j
     
  12. smokkey1

    smokkey1 1/2 ton status

    Joined:
    Jan 7, 2004
    Posts:
    2,677
    Likes Received:
    2
    Location:
    Los Angeles, CA
    whats a good brand of gears to use?
     
  13. muddybuddy

    muddybuddy 3/4 ton status

    Joined:
    Jan 29, 2004
    Posts:
    8,933
    Likes Received:
    1
    Location:
    Fairfax Station VA
    ive got yukons front, genuine in 14b (was during 5.13 shortage all i could find)
     
  14. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

    Joined:
    May 19, 2001
    Posts:
    45,031
    Likes Received:
    366
    Location:
    Vancouver, WA, USA
    anything but "Genuine" gears. Yukons are fine, and sanely priced. If you're rich and money is no object, buy some superiors.

    j
     
  15. BranndonC

    BranndonC 3/4 ton status

    Joined:
    Mar 18, 2002
    Posts:
    8,591
    Likes Received:
    0
    Location:
    Anaheim, Ca
    good luck finding 5.13's, i hear its impossible
     
  16. smokkey1

    smokkey1 1/2 ton status

    Joined:
    Jan 7, 2004
    Posts:
    2,677
    Likes Received:
    2
    Location:
    Los Angeles, CA
    I was talking to a vendor on here and there expecting to get thick 5.13's this spring. or I can get some thin 5.13's a new carrier and call it a day. I'm not going to be doing this gear swap till april or may at the latest. As long as the sub is ready by blazerfest that's all that matters and that's in july.
     
  17. mrk5

    mrk5 The Sticker Guy Moderator Vendor GMOTM Winner Author

    Joined:
    Apr 20, 2004
    Posts:
    12,341
    Likes Received:
    1,047
    Location:
    Northern Colorado
    I've got 37s and 4.56 in my TH400 rig, and they aren't any too low for highway driving. I would also vote 5.13 with your setup.

    I don't know what the cost of carriers are for you axle, but I know a D44 carrier is only about $50. Personally I would buy a new carrier and get the thin gears, especially if there's any question about availability of the thick gears.
     

Share This Page