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hi guys we have a RHS motor that runs comp 259/275 cam with comp trunion kit comp link bar followers and comp 26969 Spring kit , steel Spring seats with a outer lip to locate Spring . The seats have shattered and sent metal all through the motor making a right mess !! . We think it could be valve float but it showed no signs off it on Dyno etc , we have found two different specs for the comp Spring 129lb and 159lb at 1,835" but they measure at 120lb . I've used these springs before with no issues , I've never seem anything like this before on a Ls , we are only raving it to 7200 so not even pushing it yet !! It's only done 4 hrs from new build . Any ideas would be grateful
Is that .624 lift number rated with 1.7 or 1.8 rockers?
This question was never answered.
I have a cam that was recommended for me, cam card says for LS1 so spec's are for 1.7 rockers, I am using 1.8 as well but that was all considered from the beginning.
In my particular case that is a difference of .035 on the lift.
Looks like .037 in your case. Not a huge difference, but.
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Broken Spring seats 
