Ls7 lifter?
LS7 is a good lifter for it's intended use, but it's not designed for high rpm with higher spring rates and heavier valves. Remember the LS7 engine used a mild lobe cam with titanium valves and 1.8 rockers. If you plan on spinning the engine north of 6800rpm with a dual spring and non light weight valve, I would spring for the Johnson 2110. They won't be as susceptible to pump up at higher rpm like the LS7.
Fwiw, I am running a Morel drop in, light weight sodium valves, ti retainers, SLP rockers, and a PAC dual. I spin it north of 7k at least once Everytime I get it out for 3yrs now with no issues. I have yet to feel it go flat or lay over all the way to 7200.
That being said, Had I known about the Johnson 2110 at the time I would of went with those. Copo Camaros turning 8500rpm with that lifter.
Fwiw, I am running a Morel drop in, light weight sodium valves, ti retainers, SLP rockers, and a PAC dual. I spin it north of 7k at least once Everytime I get it out for 3yrs now with no issues. I have yet to feel it go flat or lay over all the way to 7200.
That being said, Had I known about the Johnson 2110 at the time I would of went with those. Copo Camaros turning 8500rpm with that lifter.
Last edited by kinglt-1; Dec 1, 2017 at 09:49 AM.
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