Well I just got the truck running last night on the base map. At idle lifters are fairly quiet but above 3k or rpm coming down while cruising they're very noisey. The lifters are brand new ls2s and the preload was roughly 50 thou with the recommended tfs 7.5 rods. Does anyone have any idea why these are making so much noise? I'm honestly afraid to keep driving this thing with its sewing machine like noises

 

Nobody has any idea??

 

depending on which lifters you got, some of the LS2 lifters have a .050 deeper pushrod cup than others.

my motor has the earlier style ls2 lifters. with trick flow heads i run a 7.80 pushrod. did you put a length check on it, or just go with their advice?

 

https://www.youtube.com/watch?v=GSnKcxx8GWE

 

and my heads came with 7.75 pushrods. did you measure?

 

Are you also a 4.8/5.3? And I did go with their advice for a .51 compressed thickness headgasket. I did not check pushrod length and honestly I'm really regretting it. Their heads cam combo comes with 7.5s and the same thickness gasket. Either way I have no excuse for my own stupidity on that one. I know lifter preload is determined by pushrod length but these pushrods have a centered wipe pattern as well as 50 thou preload

 

checking pushrod length with a checker is super easy and doesn't take much time.
defanitly check to make sure

 

It should go quick I just think I got a little too ancy getting it back together but I think nows the time before she goes up on the rollers

 

Fwiw, my valvetrain is noisey as **** too with tfs225 heads.

 

My buddys is too 20th his tea 235s and morrells. I'm just **** about this thing and I'd hate seeing the 3k I just spent on the swap end up grenading lol