Results 1 to 3 of 3

Thread: more mopar 340

  1. #1
    Junior Member SHOW GUEST
    Join Date
    May 2007

    more mopar 340

    more ?'s about my son's duster--will the 727 & converter that is behind our 340 now work with a 360? i know a 360 is externally balanced,does this require an externally balanced converter?--also what is the significance of "j" heads?,the combustion chambers & valves are the same size,no one can seem to tell me what the majic "j" means
    thx. Jeff

  2. #2
    Yes the converter needs to be balanced, A tranny shop charged me $25.00 a couple of years ago. The "J" head is the 340 4bbl head 72 and later, it is also the same head, casting #'s and all as the 360 4bbl head which was introduced in 72

  3. #3
    Senior Member RACING JUNKIE mopar1968's Avatar
    Join Date
    Dec 2006


    Yes it will, contact summit b/m makes a flex plate for this, just done this very thing. part number bmm-10236

  4. Racing Junk

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
Copyright © 2005-2016 All Rights Reserved.

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