L83 cam specs
03-12-2008, 08:47 PM
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Those two properties aren't mutually exclusive. There are solid lifter flat tappet cams, hydraulic lifter flat tappet cams, solid roller cams, and hydraulic roller cams. The L83 uses a hydraulic, flat tappet cam. No C4s came with solid lifters, flat or roller tappet. 1987 and up engines use hydraulic rollers.
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03-12-2008, 09:54 PM
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03-13-2008, 02:39 PM
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Originally Posted by xrcrx
The L83 cam specs are 403i/415e @ 50. 202/206 duration, flat tappet hydraulic
Intake: .2733"
Exhaust: .2820"
Times the 1.5:1 rocker arm ratio, equal valve lifts of:
Intake: .40995" (.410")
Exhaust: .423"
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