V6 Discussion and questions about the base carbureted or MPFI V6's and the rare SFI Turbo V6.

will this make my computer go into a frenzy

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Old Oct 11, 2004 | 04:55 PM
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91greenbird's Avatar
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From: southern maryland
Car: 2012 Ram express
Engine: 5.7 hemi
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Axle/Gears: 3.55
will this make my computer go into a frenzy

im gettin the crane powermax 2030 cam with new valve springs, and the comp cam 1.52 roller rockers a pushrods will this make the lift to high and mess up my computer
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Old Oct 11, 2004 | 05:02 PM
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You'll be fine with that cam and rockers. Make sure you change your stock valve springs to something heavier, the stock ones won't hold that lift.

The thing that hurts the computer systems is the exhaust and intake overlap (durations being too long and have a large overlap). Not necessarily the lift, however lift ramp usually does create duration also on a higher lift cam, but not always based on what rockers, and lifters (roller, flat, or hydralic) that you use. Rollers can have high lift with short duration if needed.

Too much overlap reduces the vacuum needed for the fuel injection system to function properly as intended, mainly at idle.
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Old Oct 11, 2004 | 06:03 PM
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Originally posted by vsixtoy
You'll be fine with that cam and rockers. Make sure you change your stock valve springs to something heavier, the stock ones won't hold that lift.

The thing that hurts the computer systems is the exhaust and intake overlap (durations being too long and have a large overlap). Not necessarily the lift, however lift ramp usually does create duration also on a higher lift cam, but not always based on what rockers, and lifters (roller, flat, or hydralic) that you use. Rollers can have high lift with short duration if needed.

Too much overlap reduces the vacuum needed for the fuel injection system to function properly as intended, mainly at idle.
not to ***** your thread but: Say I have a 204* 214* duration cam, will that cause my fuel system to go a little funky? I wouldn't think so but...
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Old Oct 11, 2004 | 08:36 PM
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From: Orange, Calif
Car: '87 Cam RS V6
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No, you should be fine to about 220*/220* from what I have read from professional results- ex Crane cams old site. they changed their info format on their website and its a shame because they used to have alot of very good straight forward combinations that were listed.

Last edited by vsixtoy; Oct 11, 2004 at 08:39 PM.
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