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Message: [QUOTE="Chvyrkr, post: 844999, member: 169"] The ford engine manual instructs the mechanic to put that timing mark at 11 o'clock prior to installing the valve train "to prevent damage." Having installed both ways... With the timing mark at 11, all rockers bolted down easily. I didn't have to pull any rockers down to the head with the bolts. Without lining anything up, there were a couple rockers that didn't want to sit flush, and I cranked the motor over until that particular rocker sat flush, then bolted it. I'm not sure what you could damage if you didn't roll the motor over and used the bolts to pull the rocker down. I doubt seriously that the static lifter pressure would overcome spring pressure, and cause piston to valve contact or something of that nature. But, it's generally considered bad juju to use the threading action of a bolt to seat a part so... If you can't set the timing mark to 11, just roll the motor as you work so you can seat each rocker flush before you bolt it down. You'll be fine. [/QUOTE]

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