L83 cam specs

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Mar 12, 2008 | 05:30 PM

timscott

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Racer

Joined: May 2007

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From: Tidewater Oregon

L83 cam specs

Did the '84 engine(L83) come with a solid lifter cam or a roller cam?

Mar 12, 2008 | 08:47 PM

CFI-EFI

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From: The Top of Utah

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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Mar 12, 2008 | 09:51 PM

Red Tornado

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From: OBAMA IS HITLER

did someone ask what the specs of the cam are? i could have sworn that was buried in the subject line of the thread. i think i got baited and switched!

Mar 12, 2008 | 09:54 PM

jsup

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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan

Quote:

Originally Posted by Red Tornado

did someone ask what the specs of the cam are? i could have sworn that was buried in the subject line of the thread. i think i got baited and switched!

So stop whining and call the attorney general.

Mar 13, 2008 | 06:32 AM

xrcrx

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From: Webster Texas

The L83 cam specs are 403i/415e @ 50. 202/206 duration, flat tappet hydraulic

Mar 13, 2008 | 06:34 AM

Red Tornado

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From: OBAMA IS HITLER

Quote:

Originally Posted by jsup

So stop whining and call the attorney general.

nope, can't......i'm not the tattling type

Mar 13, 2008 | 02:39 PM

CFI-EFI

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From: The Top of Utah

Quote:

Originally Posted by xrcrx

The L83 cam specs are 403i/415e @ 50. 202/206 duration, flat tappet hydraulic

My FSM doesn't show durations, but it differs on the lifts. It shows the lobe lifts as:

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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