i got a 98 4.3 and i replaced the timing chain and gears with the arrows pointing at each other and replaced 4 pushrods cuz they were bent and i put it all together and got the distributor pointing a little after the 6 cuz thats the only place it will fall into place and its at +18 and +30 degrees and i took it down the road and drove fine and when i got home it started missing again like if i bent another push rod and plus when i took it all apart i had to replace one of my roller rockers cuz the bearings had fell out and i dnt think its much of a difference but i replaced my bent pushrods with ones from a 5.7 any help please im running out of ideas and money