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Thread: ecotec stock cam profile

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    ecotec stock cam profile

    anyone have info on the cam lift/duration profiles for the 2.2 ecotec?
    Last edited by iamadarklittlefox; 04-26-2006 at 05:03 PM.

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    Intake
    Lobe Center = 112° ATDC
    Duration at .050 in. lift = 222 Crank Degrees
    Max Cam Lift = .274 In.
    Net Valve Lift = .466 In.

    Exhaust
    Lobe Center = 119° BTDC
    Duration at .050 in. lift = .222 Crank Degrees
    Max Cam Lift = .274 In.
    Net Valve Lift = .466 In.

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    where the frack did you find that?

    thats interesting that the specs are pretty large compared to GM's previous 4 banger DOHC engines... the W41 cams weren't even that large. W41 cams were .410 lift and and 219 degree duration.

    now the ecotec engine is only .1 liter smaller... has the same CR... better cams... and makes a whopping 50 less hp and 10 ft lbs of torque?



    something's gotta be a bottle neck.

    maybe it's the head/manifolds...
    Last edited by iamadarklittlefox; 04-26-2006 at 07:19 PM.

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    its the head and manifolds.

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    see i was right.

    of course you would know hehe.

    if we could flow bench one of those heads to match the cam profile, slap a log intake manifold and get a good long tube header...

    200+ hp.

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    I did a Google for "2.2L Ecotec" AND cams AND lift AND duration" and It brought me to one of the GM Ecotec Build Guide .pdf's. Just rummaged thru till I found that section. It did take many tries and keyword combinations in order for me to find it though.

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    if we could flow bench one of those heads to match the cam profile, slap a log intake manifold and get a good long tube header...

    200+ hp.
    iamadarklittlefox
    Well said.
    Make me one too.
    Last edited by LSJFury; 04-26-2006 at 08:15 PM.

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