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Old 01-07-2014, 07:22 PM   #1
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Cams with Turbos

I was just wondering researching... How would Cams affect turbos- single or twins in a 4.6L 3V.. With proper tuning and set-up?? Hit me up... Wanna put a set of Comp Cams "Mutha Thumpa" cams with in the next 3 months..
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Old 01-08-2014, 12:05 AM   #2
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What you really don't need on a turbo engine is a set of wild cams. You've already got something that's increasing the VE stuck on the end of the headers. Wild NA focused cams will sap power out of your package.

You can play around with cam timing a lot more than you used to, because turbos aren't **** like they used to be. You don't need as much exhaust energy stacked up behind the turbine wheel because modern turbos are low inertia and spool up faster. So, hence, you can open the exhaust valve duration up, the way you would on a NA engine, for example.

Basically, you can run relatively low lift and duration package cams, which is easier on the engine and, still make mega power because of forced induction.

...and btw, the rotating assembly in your 4.6 isn't going to take much above 450 before it blows....any turbo setup is going to incinerate the rotating bits pdq.
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Old 01-08-2014, 06:15 AM   #3
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Thanks 5LHO..
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Old 01-09-2014, 12:49 PM   #4
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The above advise is solid, it your going to boost, id stick w your stock cams. That cam $ could set up a Methanol kit for those turbos.
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Old 01-09-2014, 01:19 PM   #5
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There are also cams made specifically for turbos. You won't get that nice loping idle with them but they will help with power.
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