F150online Forums - Cam phasers

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rnr6779

09-13-2018 02:54 PM

Cam phasers

I’m about to change the timing set on my 5.4 and was wondering, if I replace the cam phasers to the locked kind, what else has to be done?

ManualF150

09-13-2018 04:38 PM

You'll likely need a tune and I recommend a Melling oil pump.

Roadie

09-13-2018 08:43 PM

Do you know what postion the locked ones will lock your cams, in the fully advanced, fully retarded, or somewhere inbetween?

F150Torqued

09-14-2018 09:10 AM

"Fully Advanced" - the position that the vvt system positions cams at idle (below 800 rpm), at heaver load conditions, and at higher rpms, and at deceleration. All other conditions (at gentle driving / acceleration, at cruise, light pulling) - the ECU employs some varying degree of cam retard.

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