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What repairs have you done to get you to the timing chains?What was wrong with the engine to get you to this point?
I replaced head caskets( Both Sides)
You can rotate the camshafts around by turning them clockwise. But do it slowly and use a wrench and not a ratchet. Do not force the cam around. You can damage the valves.
If the cam stops. Slowly turn the crankshaft clockwise by the crankshaft pulley bolt till the camshaft rotates enough to get the timing marks to line up. Do this with both timing chains off.
Get the timing marks close to their proper positions and then install the timing chains and tensioners.
I know were the timing marks on the cam gears are but what mark do you line them up to.
Below is the shop manual for lining up the timing marks and where they are.
You do not need the special tools.