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  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech

how can I tell how much lift my valve springs can handle?

  • Thread starter Thread starter DarkoStoj
  • Start date Start date May 1, 2005

DarkoStoj

Founding Member
Sep 4, 2002
929
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39
Detroit
www.pacific-motors.com
May 1, 2005
#1
  • May 1, 2005
  • #1
I was looking at my World windsor Sr. heads that I purchased used and was curious whether they can handle .6 or .7 of lift. The owner said he swapped out the stock ones for crane dual valvesprings. Is there any #, or any markings on them that would let me know what they are?
 

DarkoStoj

Founding Member
Sep 4, 2002
929
13
39
Detroit
www.pacific-motors.com
May 1, 2005
#2
  • May 1, 2005
  • #2
here is a pic if it helps any
 
1

1965pony

New Member
Apr 17, 2005
37
0
0
56
Nor Cal
hometown.aol.com
May 1, 2005
#3
  • May 1, 2005
  • #3
boooiiinnnggggg

DarkoStoj said:
here is a pic if it helps any
Click to expand...
nice avatar BTW...I know its a cartoon but I can't help but look.
well its tough without a spring tech card...can you get the guy you bought them from find a reciept or pn?? He has to have something unless he's BSing you.
All is not lost, you can pull one then take it to your local machine shop and have him measure them. That should tell you for sure.
Spring pressure isn't the only thing you have to worry about with a .700 lift. Valve and guide stem clearance should also be taken into consideration. Vin
 
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