C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Max Intake Valve Lift

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Old Dec 26, 2007 | 02:40 PM
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Default Max Intake Valve Lift

Flush deck height, 2.02 Valves, LT4 cam 1.6 to 1 rockers. Was thinking of 1.65 or 1.7 to 1 rockers on the intake. Anyone know if it would be close to piston contact?
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Old Dec 26, 2007 | 04:33 PM
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I'm running the stock LT1 shortblock, .029 head gaskets, 2.0/1.57 valves, and 605/622 lift without a problem. Normally larger duration is more of a problem than lift.
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Old Dec 26, 2007 | 04:35 PM
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Originally Posted by STL94LT1
I'm running the stock LT1 shortblock, .029 head gaskets, 2.0/1.57 valves, and 605/622 lift without a problem. Normally larger duration is more of a problem than lift.
Yep. Lift is only a small piece of the equasion.
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Old Dec 26, 2007 | 06:58 PM
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Originally Posted by STL94LT1
I'm running........605/622 lift without a problem.........
You running a custom ground Comp Cams 224/230 with 1.6 rockers?????

If so.....I have the same cam !

KW
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Old Dec 26, 2007 | 07:01 PM
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Originally Posted by Kevin Woods
You running a custom ground Comp Cams 224/230 with 1.6 rockers?????
Yep, works real well in my car.
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Old Dec 26, 2007 | 07:03 PM
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Originally Posted by Kevin Woods
You running a custom ground Comp Cams 224/230 with 1.6 rockers?????

If so.....I have the same cam !

KW
Same Cam but I'm not running. I have a 383 built up but have not got around to installing. I was just curious if I could increase the lift on the intake side because large valves flow less than small valves until .5 lift. Think I will get a set of 1.65 rockers.
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