When is it time to change springs?
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On The Tree
Joined: Jan 2005
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From: Euless, Tx
When is it time to change springs? I have put about 8k miles on my Absolute Speed 5.3 heads with crane dual springs. I am running a 224/228 581/588 +4 cam. Just curious when it is time to swap the springs or is there a test I can run to check the strength of the springs.
TECH Senior Member
Joined: Mar 2004
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From: BFE
Originally Posted by JudgeGuns
DEPENDS ON HHOW MUCH TRACK TIME OR HOW MUCH YOU REDLINE IT BUT OTHERWISE RULE OF THUMB IS 20,000 MILES 
In genearal as Judge mentionned it depends on how hard you use the motor, but it is good practice to measure the seat/open-closed pressures on a yearly basis.
compare that to original specs to make a judgement on whether to replace or not.
Singles should be done more often than duals.
Last edited by PREDATOR-Z; Apr 10, 2007 at 07:13 AM.
Originally Posted by kendo347
I have put about 8k miles on my Absolute Speed 5.3 heads with crane dual springs. I am running a 224/228 581/588 +4 cam. Just curious when it is time to swap the springs or is there a test I can run to check the strength of the springs.
Originally Posted by PREDATOR-Z
In genearal as Judge mentionned it depends on how hard you use the motor, but it is good practice to measure the seat/open-closed pressures on a yearly basis.
compare that to original specs to make a judgement on whether to replace or not.
Singles should be done more often than duals.
compare that to original specs to make a judgement on whether to replace or not.
Singles should be done more often than duals.
Since you don't drive it hard, if it were mine I would check every 30K miles.
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TECH Resident
Joined: Jul 2005
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From: NJ
You have a ways to go. Im at 26k miles on my 224/228 patriot gold duals. still runs like a champ. I drive mine hard..sees redline many times. I do however follow the golden rule with dual springs. No WOT until oil temps hit 150 deg.
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Predator-Z offers some good advice. The springs should be fine for awhile. We have tested several sets that customers have sent in after changing and the springs have done very well. One set that stands out was a set on a G5X3 cam that had 27,000 miles on them that were still at their advertised rates.
