Noisy lifters? Need help Please

[Grapdawg]

Ok I have finally started driving my truck and It was sitting for 2 years prior to me purchasing it. At first when I got her running there wasnt much noise coming from the motor. But today I drove it about 70 miles and she started ticken alot. It had a slight tick before but now its pretty loud.
I was woundering if you all had any experiance with noisy lifters and ever tried to tighten the rocker arms to cure the problem. I know the motor is very tired and I need a new one but was hoping to make it through the summer with this one. I was thinking of trying to tighten the noisy lifters. (Take of driverside valve cover and see what I can find with it running anb see if I cant get it to quite down) What do ya think?