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Rick Shirey · 05-30-2009, 08:46 PM

Thanks for the input.Up till now I have been using the Moroso on head tester and decided to step up to the LSM unit.One reason was because I could not test #7cyl and some of the others I wasn't able to get a good straight pull on.This is on a modified superstock engine that I use Manley Nextex spring part#221447.The springs are suppose to have 340lbs at 2'' when new.Right now I have less than 30 runs and the springs are between 340lbs and 280lbs.Is anybody using this spring and how many runs or at what psi do you replace springs?Once again thanks in advance.

05-30-2009, 08:46 PM	#5
Rick Shirey Junior Member Join Date: Apr 2003 Posts: 53 Likes: 0 Liked 0 Times in 0 Posts	Re: LSM valve spring tester Thanks for the input.Up till now I have been using the Moroso on head tester and decided to step up to the LSM unit.One reason was because I could not test #7cyl and some of the others I wasn't able to get a good straight pull on.This is on a modified superstock engine that I use Manley Nextex spring part#221447.The springs are suppose to have 340lbs at 2'' when new.Right now I have less than 30 runs and the springs are between 340lbs and 280lbs.Is anybody using this spring and how many runs or at what psi do you replace springs?Once again thanks in advance.