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Yeah, I started this way before and when I checked I had enough clearance. I was a little paranoid maybe I screwed it up somehow or the engine was open for so long something fell in lol that's why I bought one of those endoscope cameras and snuck it in the cylinders. I had all the ports plugged...

It looked like something was going on with the oil pressure at one point but the oil pump probably has less than 10k miles on it and I'm under the impression functioning hydraulic lifters shouldn't really bleed down. I do want to get an mechanical oil gauge on it but I'm not sure I'm ready to...

well, I just wrapped up my inspection, and it's now quiet. Well it's still a little louder than I would like but the worrisome loud racket I heard before is not happening and I just have a small exhaust leak to fix. Might take the valve covers back of and maybe go a little tighter than the...

yeah I measured, stock length was damn near dead-on, I forget what the length I used was but it was just a hair longer than stock. how loud would the thermactor plugs be if they weren't sealing completely? the sound isn't there turning it over by hand, or with the starter fuel injectors...

its a 2000 ford 5.0 out of a ford explorer, the valve train was tired from the engine having around 140k on them. I picked up some cheap flotek 1.94 intake 1.55 exhaust aluminum heads thinking they would be comparable to what I pulled off. the roller of the lifters looked fine on all, three...

well, I was wrong, it's still loud as can be. I'm beginning to think a chipmunk dropped some food in my engine somewhere, I don't know what else it could be.

yeah, they are hardened, I went with the 5/16 comp magnums with .80 wall. I got the rockers adjusted and lower intake manifold back on and torqued. I will probably run it tomorrow with the valve covers off just to make sure everything is okay before buttoning it up. I'm pretty confident the...

I have to set them today, I took it all apart to replace the lifters. The past few times I have settled on a half a turn after finding zero lash. I have tried 1/4 all the way up to a full turn, I haven't adjusted them while running but I have a feeling my issue was solved by massaging the guide...

for anyone following along, I replaced my lifters with Ford Performance M-6500-R302H lifters which are supposed to be the same height as the originals. They are pretty close, I imagine they are pretty close to dead-on if your lifters aren't too worn. the biggest thing I noticed is that although...

I haven't put it back together yet but, I think I found a more likely cause for my sound. I know a few of my lifters are iffy and I have replacements coming in but I noticed some contact marks on my pushrods and I think the guide plates were not actually allowing the pushrod to stay fully seated...

well I pulled my lifters, there are a couple that are questionable but nothing terrible, most seem pumped up and solid.

Did you figure out what the cause was? I am experiencing the same issue and am at a total loss. I have a pretty similar setup except for still having the stock cam and lifters.