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Correct if im wrong, in order for the previous owner to have put a new timing chain kit on, he would have to have pulled the head right?


You do not have to take off the head to do the timing chain. To replace the chain you can just take off the timing chain cover without removing the head.

The denso spark plugs are OEM one that truck.

Thomas

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94 Toyota Pickup 22R-E
EB's Street RV Head with 268* Cam