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

Predicting Valve Float

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Old Nov 21, 2017 | 01:00 PM
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CMiller95
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Default Predicting Valve Float

I would like to hear your opinion on when valve float would occur with a given configuration. I know this is extremely subjective but here it is:

Cam: 220/226 @ 0.050, 0.530 lift, 113 LSA
Springs: PAC 1219, 160 closed, ~320 open
Valves: Factory
Pushrods: One Piece Comp 5/16'' hardened
Rockers: Scorpion 1.5 RR
Studs: 7/16'' ARP

I know that rockers and studs are really that relevant but I would like to hear your opinions

Colton
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Old Nov 21, 2017 | 04:48 PM
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With that short a cam suspect out of breath by 6000 to maybe 6500 and the springs should go that far easily. Revs beyond that is probably just burning gas and making noise.
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Old Nov 21, 2017 | 07:14 PM
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You're absolutely right about the cam range. Peak power was right at 6100 so its a loss after. Although shift point wise by time the shift light turns on and I react I'll be closer to 6400-6500. Just wanted some opinions on when valve float becomes a possibility.
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