Welcome To V6Mustang.com!

We are the oldest and largest V6 Mustang forum on the internet. If you have any questions about your V6 Mustang or just want to connect with other V6 Mustang owners around the world, you have found the best place on the internet to do that.

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

3.9 v6 swap to 3.8 lt v6

Discussion in '1994-2004 V6 Mustang Tech' started by Karson TheFellar Lewis, Aug 14, 2017.

  1. Karson TheFellar Lewis

    Karson TheFellar Lewis New Member

    Aug 14, 2017
    Likes Received:
    Trophy Points:
    I have a 2004 mustang that has a 3.9 ltr v6 that blew a rod I'm attempting to swap in a 3.8 v6 that was casted by the codes on the block in 97. What major things am I gonna have to do to complete the swap such as swapping heads? Buying a fly wheel with a counter balance as the 3.8 has a counter balance on the front pulley and my 04 3.9 does not. Any help is appreciated. Thank you!