Valtrain noise

I had my motor rebuilt back in January and when I put everything back together I had valvetrain noise. More pronounced when you were driving or reving the motor than when it was just idleing. I had stock 302 block, pistons, and rods. The heads I had on there were stock E7TE's that were ported and had a valve job. The cam is a 303F cam. I changed lifters a couple of differen't time and still noisy. I was running the stock pedestal mounted steel rockers. So a couple of weeks ago I swapped the heads out and I put a set of GT40P's on and put the rockers off of my E7's along with 6.272 pushrods on them and it is still noisy. So now I am starting to wonder exactly why I am having this locomotive ticking sound. I originally thought it was the E7's I had on there but since its still there I am clueless. The car is running 12's on motor so I can't complain to much but the noise is agravating and sounds like crap. Any ideas as to what this is? Does anyone else have this problem or am I the only one?
__________________
89 LX 302 Edelbrock 5.0 performer intake, GT40P's, 75MM TB,73MM C&L MAF, 24# injectors,MAC air intake, F cam,BBK full length headers 2 1/2 flowmaster exhaust, 70/30 front struts, Lakewood lift bars 3.73's

I am going to check this tonight. So just in case I do have this going on how do I fix it?