engine tics and knocks are the hardest to diagnose. take it from me i just spent so much money on this project and just because it tics doesnt automatically mean lifters or rockers. Ok heres the deal. i had what i thought to be a lifter go out. well i ordered all this new stuff and spent $1100 trying to fix this problem and it never got fixed. new lifters, hot cam kit, pushrods, all of it. it never fixed and the reason is because i spun a rod bearing. it started out as a tic then it got worse and became a knock. well after i installed all my new parts thinking it would be solved there was the same noise there was before i tore the motor down. i started doing oil press. test, spark test, etc. i finally relized if i unplug one of the spark plugs that cylinder won't fire. well sure enough i unplug the #6 cylinder and the knock stops. well that tells me two things. either a main bearing or rod bearing. my bet is a rod bearing. cheap to fix but time consuming. you have to drop the motor.

 

yes you do just to see the rod bearing you have to i have the same prob i spun a rod bearing and i had a buddy look up how to do it on alldata witch is what he uses at the shop he works at and it said it would take 17 hours just to look at the rod bearings and so i just got a new long block and i am gonna give them mine for the core fee easyer and they sell short blocks to so if you want the link just pm me