valve adjustment

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07-19-2011, 07:46 PM

Fatcatpaddy

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valve adjustment

I have a 76 f-750 with a 391, are the valves adjustable, you can hear the valves clattering the truck has been sitting for 5 years.

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07-19-2011, 07:52 PM

ford390gashog

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If it has adjustable rockers then yes you can adjust the preload! If not its more complex and involves different length pushrods. Is it sludged up inside the engine????

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07-19-2011, 07:54 PM

Fatcatpaddy

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I don't know if it is sludged up In there, the engine seems fairly basic

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07-19-2011, 09:11 PM

highboy1975

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im looking into adjustable pushrods. not gona spend 400$ on adjustable rockers and dont wana pay the labor to map out custom pushrods.

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07-19-2011, 11:11 PM

wyckedcombo17

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Does your 391 have hydraulic lifters or solid? If they're hydraulic, pop off the valve covers and tighten them 1/4 to 3/8 of a turn past zero lash.

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