Results 1 to 4 of 4

4.10 or 3.91?

This is a discussion on 4.10 or 3.91? within the Drivetrain forums, part of the LSx Technical Help Section category; what would be better for a firebird with a 305? im about to put an 89 trans am rear end ...

  1. #1
    formulabird06
    Guest

    4.10 or 3.91?

    what would be better for a firebird with a 305? im about to put an 89 trans am rear end on and havent really made up my mind on gearing? any suggestions?

  2. #2
    Member
    Join Date
    Aug 2005
    Location
    Yardley, PA
    Age
    51
    Posts
    111

    Black
    2001 Camaro SS

    depends on current/future mods, what you are looking for. What are you trying to do with the car? Daily Driver? What trans? Ratios?. Sorry, not enough info to make a recommendation

  3. #3
    formulabird06
    Guest

    3.91 or 4.10

    it has a 350 transie and hope to stroke it out to a 383. it will pretty much be a daily driver when weather is nice.

  4. #4
    I like the way yew tawlk. Ric's Avatar
    Join Date
    Aug 2005
    Location
    Blairsville, GA
    Age
    41
    Posts
    215

    Red
    2000 T/A WS6

    If you're runnin a TH-350 trans, then you're gonna want about a 3.55 at the lowest, considering those aren't overdrive units. You'll tach over 3000 rpm at 60 with 3.91s, more still with 4.10s.

Thread Information

Users Browsing this Thread

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

Members who have read this thread: 0

There are no members to list at the moment.

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
  •