slowassta

iTrader: (12)

so it appears that Mr.trex and i were not meant to be....

i'll let the pictures tell the story...

Cam




Lifter





so my question is what coulda caused this...

styoung

iTrader: (4)

damn that sucks. you got me on this one. hows the rest of the motor?

ImStock

how well was the cam lubed when you put it in?

slow95z

iTrader: (33)

looks like the lifter roller was stuck. maybe dirt or something locking it up.

slowassta

iTrader: (12)

it was well lubed, put 6k miles on the cam and lifters

sixt9er

iTrader: (2)

Were those the "stock" lifters?

slowassta

iTrader: (12)

stock replacement ls7's

Mike454SS

iTrader: (4)

I had a lifter come out of an LT1 looking like that on me before...the lifter guide had failed (LT1's have a spider in the valley that holds the guides down, and it bent up and let a guide free) which caused the lifer to spin in the bore and then the roller wasn't rolling on the cam anymore...in an LS1 the guides are plastic and totally different, but the principle is the same, how does the lifter body fit into the guide? Could the lifter have rotated in it's bore?

slow95z

iTrader: (33)

the wear looks to straight across the plane for it to have gotten turned. it simply appears that it locked up for what ever reason.

slowassta

iTrader: (12)

thats what i think happen

BrokenWs6

Scary! Wondering now weather or not to go with the Ls7's on my cam swap...? That missing chunk stay up top or are you gonna have to pull the pan to get it out? Good luck.

novaflash2002

iTrader: (51)

i had a cam wipe out like that once and it cut grooves in the bearings. You might pull a rod cap or two to check the bearings.

slowassta

iTrader: (12)

to much work to pull the pan, so its gonna stay like that, and being the cam bearings look good im gonna say the mains should be ok too... just tired of it, if something happens now shes gonna sit till i build an stroker

NemeSS

iTrader: (127)

aww... cmon, its fun to pull the motor
how is lifter bore? any damage? what about the lifter tray?
looks like the lifter rotated,may have scored the lifter bore as well

9t8z28

iTrader: (19)

Did you use new trays?

slowassta

iTrader: (12)

i just dropped the motor a few months ago, to inspect and swap in the trex and new lifters.... lifter bore appeared to be ok... the tray held the new lifter just fine. nope stock trays from the motor...

ahh im just tired of it... stock she goes... well, LS1 stock.

PREDATOR-Z

Get Comp 850-16, they will work fine and get brand new trays.
What year block you have?

99blancoSS

iTrader: (115)

I've heard rumor of this and now I see the proof.
It's a factory lifter, it isnt meant for heavy spring pressures and hi rpms and aggressive cams.

We use Morels link bars when ever we can.

BrokenWs6

How about comp 875-16 "R" type lifters? Or is that overkill?

PREDATOR-Z

I prefer Morrels then, Comp R lifters are a pain in the **** when it comes to preload.

I run 850-16 in all my motors to 7000 rpm. and up to .620 lift with 0 issues to date, proper geometry and preload a must.