Page 1 of 2 12 LastLast
Results 1 to 10 of 11

Thread: Th400 or Poweglide ?

  1. #1

    Th400 or Poweglide ?

    I've been going round for round on this decision as my research so far has not convinced me to lean in either direction. Are there any experienced builders or racers out there that can offer some first hand knowledge about this topic? Most comparisons I see ask about car weight and HP/Torque. This is a pro-street car that is driven short distances on occassion for car cruises, etc (approx. 300mi/yr). Here is the relavant information about my car.

    68 Firebird
    3300 lbs w/driver
    474 stroker Pontiac
    742 crank HP & 672 ftlb torque
    Th350 trans w/4500 stall
    3.73 rear gear
    28" x 10" slick

    Currently runs 9.90s at 136mph....1.42 @ 60'

    Thanks,
    Bob

  2. #2
    Senior Member DYNO OPERATOR
    Join Date
    Oct 2004
    Location
    florence ky
    Posts
    498
    That's good for a driver for sure what is your reason for wanting to change your trans .

    for me if i was going to drive it on the street and wanted to make it stronger i would go with the turbo 400 and for racing the glide is not going to help you really because of the weight of the car.

    The reason i say that is because i did that a few years ago went from a turbo 400 to a glide and didn't help as far as ET goes it was in a nova at 3500 lbs the 60 foot slowed down and the ET also the only real advantage for me was going to air or electric shift the shifters are cheaper .

    So it all depends on what you are trying to accomplish.

  3. #3
    Senior Member EXPERT BUILDER
    Join Date
    Mar 2007
    Location
    Michigan
    Posts
    379
    with the weight of the car, stick with the turbo 400. Good Luck Powergiide works great with lighter cars. JMO
    Blowninjected 540 - when is going fast, Fast enough ?????

    http://www.racingjunk.com/profile/182079

  4. #4
    Senior Member RACING JUNKIE
    Join Date
    Jan 2006
    Location
    La.
    Posts
    2,890
    X3 turbo 400.

    Zip.

  5. #5
    Senior Member DYNO OPERATOR
    Join Date
    Feb 2009
    Posts
    510
    A th400 won't break. They last forever, put it in there and forget about it.

  6. #6
    Senior Member RACING JUNKIE
    Join Date
    May 2006
    Posts
    2,044
    Ditto> TH400
    ***IN GOD WE TRUST***

  7. #7
    Senior Member EXPERT BUILDER
    Join Date
    Jan 2005
    Posts
    336
    400... one of best trans imo

  8. #8
    Senior Member RACING JUNKIE
    Join Date
    Sep 2007
    Posts
    4,143
    400 would be more fun to drive.

  9. #9
    Senior Member RACING JUNKIE
    Join Date
    Dec 2008
    Location
    Sugar Hill, GA
    Posts
    1,365
    Quote Originally Posted by Tod74
    400 would be more fun to drive.
    And engine powerband control if you want to change out the rear end ratio.
    Dave
    Dave
    http://www.racingjunk.com/profile/343797
    "All that is necessary for the triump of evil is for good men to do nothing" Edmund Burke

  10. #10
    Forgot to mention I want to change the Th350 because I intend to start using Nitrous, which will put me at about 1000HP total (more than I want to trust my TH350 to handle), and I would like to install a trans-brake.

    Thanks


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Email us - Support@RacingJunk.com
Call us - 866.326.9227
Copyright © 2005-2016 RacingJunk.com All Rights Reserved.

Designated trademarks and brands are the property of their respective owners. Use of this Web site constitutes acceptance of the RacingJunk.com
Terms of Use, Classifieds Disclaimer, Privacy Policy, and Cookie Policy