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Old 05-23-2013, 07:20 PM   #1
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MAX Valve lift

What is the max valve lift on a cam you can install before interference with pistons on a stock LS3?
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Old 05-23-2013, 07:30 PM   #2
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Depends on the design of the cam.Average are .610-.620 range.
But I have seen some push it to .650.
I'm sure the cam specialists will chime in here in a bit.
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Old 05-23-2013, 07:34 PM   #3
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There's more to it than that, what's the Lsa? What's the durations? Lots more info is needed sir.
2001 ws6, 40k miles, Ls3 416 stroker, short block built by PER the rest by me. LPE Ls3 heads milled to 12-1 comp, FAST 102, NW 102, kooks 2", dual DMH cutouts, Magnaflow C/B, BTR cam + springs. Full UMI suspension.
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Old 05-23-2013, 08:14 PM   #4
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Yep, lift is probably one of the least things that affect piston to valve. Read the sticky at the top of the page.
Retired wannabe
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Old 05-24-2013, 10:40 AM   #5
Jason 98 TA

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Your best bet is to talk with a experienced camshaft design shop. I can give you a cam with less than stock lift that will bend every valve on startup, or a .750" lift camshaft that would clear just fine. Really there are so many things that go into p/v that are way more important than max lift.

Give us a call if we can help you on it, we do more LS camshafts than anyone else in the world.
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