Author Topic: How to tell the difference between 340 J Heads and X Heads  (Read 1180 times)

Offline Risko1

  • Jr. Member
  • **
  • Posts: 113
How to tell the difference between 340 J Heads and X Heads
« on: January 14, 2008 - 03:14:45 PM »
Aside from #s is there any obvious features between X & J Heads?




Offline Chryco Psycho

  • Administrator
  • C-C.com Guru
  • *****
  • Posts: 36620
  • 70 Challenger R/T SE 70 tube Chassis Cuda now sold
Re: How to tell the difference between 340 J Heads and X Heads
« Reply #1 on: January 14, 2008 - 05:38:22 PM »
they are very similar other then the X or J cast beside the spark plugs , the casting # is different as well

Challenger - You`ll wish You Hadn`t