Author Topic: Crane Ductile Rocker Hardware?  (Read 657 times)

Offline AMXguy

  • Sr. Member
  • ****
  • Posts: 1035
Crane Ductile Rocker Hardware?
« on: September 01, 2009 - 09:58:11 PM »
What do I need for the Crane ductile big block rockers as far as spacers and springs go? I'm not sure what keeps them in the proper place on the shaft, or where to get what I need now that Crane is gone.
1970 R/T SE Challenger
 1970 Superbee
 1969 S code Mach 1
 1967  GTO




Offline Chryco Psycho

  • Administrator
  • C-C.com Guru
  • *****
  • Posts: 36620
  • 70 Challenger R/T SE 70 tube Chassis Cuda now sold
Re: Crane Ductile Rocker Hardware?
« Reply #1 on: September 02, 2009 - 12:24:37 AM »
you need 8 springs , you can use the stock hold downs for the shafts

Challenger - You`ll wish You Hadn`t

Offline AMXguy

  • Sr. Member
  • ****
  • Posts: 1035
Re: Crane Ductile Rocker Hardware?
« Reply #2 on: September 02, 2009 - 02:02:56 AM »
OK it looks like Mopar Performance sells the spring kit fot their ductile rocker set which I'm guessing would work, but the picture shows 4 spacers per side and I don't see those for sale. do the Crane rockers use these spacers as well? or any washers on the spring ends?
1970 R/T SE Challenger
 1970 Superbee
 1969 S code Mach 1
 1967  GTO

Offline Chryco Psycho

  • Administrator
  • C-C.com Guru
  • *****
  • Posts: 36620
  • 70 Challenger R/T SE 70 tube Chassis Cuda now sold
Re: Crane Ductile Rocker Hardware?
« Reply #3 on: September 02, 2009 - 12:05:51 PM »
with the alum rockers you use a thin steel shim to prevent the spring wearing into the alum , with the iron rockers this is not nessisary but would not hurt , the shims can be used to tweak the rocker tip over the valve stem as well

Challenger - You`ll wish You Hadn`t

Offline torredcuda

  • Sr. Resident
  • ******
  • Posts: 6218
  • Epping NH joined 11/23/03
Re: Crane Ductile Rocker Hardware?
« Reply #4 on: September 02, 2009 - 12:15:58 PM »
When I did my last cam swap I wanted to better align the tips with the rockers as some were off center quite a bit so I replaced the springs with spacers.I`ll have to check when I get home but I think I used the Harland Sharp SP031k-SP700 spacers ordering what I needed after measuring with verniers.You can mix and match to get the desired spacing and they have worked fine for me so far.
http://www.harlandsharp.com/components1.htm#Spacers

There are also a couple other companies selling the same style adjustable rockers as the Cranes.
« Last Edit: September 02, 2009 - 12:28:16 PM by torredcuda »
Jeff
72 Barracuda 340/4spd  Torred
70 roadrunner 383/auto  In-Violet
70 Duster 360/auto drag car  (Petty Blue soon)
04 Ram 2500 5.7 Hemi