knock?

[Prix87]

85 2.8L 5spd. Only after its warmed up with a mile or so under her, i hear a knocking when rpms hit above 3k when shifting. If i'm casualy driving and shifting easily i hear nothing. Only if a want to romp on it. I've checked n tightend everything on and around the block. Is this a rod saying hello?

[Genopsyde]

is it a series of knocks, or a single knock?

[Prix87]

a series of em

[classic_327]

hows your oil pressure? if its dropping,or not where it normaly is, mr rod and mr bearing might not be getting along. but the 2.8 motor was kind of a noise prone one. my 85 2.8 was ummm,well..thrashed on its whole life. i had a lot of noises in the high rpm ranges,knocks included. it made it to about 115k then it threw a rod during a burnout contest. you could drop the oil pan and pull the rod caps and check them. or maybe now is a good time to look for a 350