The intake valve lift mechanism 22 may include {HEAD ~ a pushrod} 30 and {TAIL ~ a rocker arm} 32 
The intake valve lift mechanism 22 may include { HEAD ~ a pushrod } 30 and { TAIL ~ a rocker arm } 32
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH