Ls7 lifters
Yes I understand that. Why do all the analysis after the failure? Why not verify origin before ruining an engine.
Just saying. He has connections to all these people yet goes and buys mystery lifters.
My dad worked for a big auto manufacturer and I can tell you right now he would have had them pulled out of the assembly room. And he didn't have all these connections. That story sounds like bullshit to me.
The more important people a person claims to know the more the odds are that they are full of ****.
Just saying. He has connections to all these people yet goes and buys mystery lifters.
My dad worked for a big auto manufacturer and I can tell you right now he would have had them pulled out of the assembly room. And he didn't have all these connections. That story sounds like bullshit to me.
The more important people a person claims to know the more the odds are that they are full of ****.
1) I'm the guy that made the FB post. And yes, I'm a powertrain engineer. I just realized booboo37, who's on the same FB page as me posted this 2 months ago. I just realized he posted a snip with my name.
2) The pics are from a friend that had infant mortality on his build. He bought them assuming "LS7 lifter" meant these were GM lifters... Know how if you're knowledgeable about XYZ, and a friend asks for advice on it, you give them the advice and THEN they tell you that they already bought XYZ? Turns out they really just wanted to feel better about the decision they made? This was sort of like that. I didn't know he bought Jegs lifters until he pulled the motor apart to find this. I would not have let him buy these lifters if I was aware. I just did a cam swap with my brothers Caprice PPV, and we used GM lifters (xxxx9225 iirc), ordered through the dealer, $300ish, buy once cry once.
3) Nothing was hit with an angle grinder.
4) Motor was not run long, the tuner didn't even make a full RPM pull yet before the engine started to get noisy. It is running a tame GM ASA cam, nothing exotic. I helped him pick it because he wanted a reliable build, and it's the same cam the 525HP LS3 crate motors come with. They live great on LS9 springs, make good power, and the profiles are tame enough to run at high RPM for a long time.. Yes there's HP left on the table, there are more aggressive cams, my buddy wanted what he wanted, 525HP is a nice upgrade over the 345HP his C5 had, win win. Again, I know the guy that designed that cam profile.
5) Figuring out a failure is always a curiosity for me, and I have the luxury of working with the guys that engineer these parts.
6) I don't "pull parts out of the assembly room". I'm not a 1-piece-at-a-time kind of guy, those parts don't belong to me, and a set of lifters isn't worth getting canned from an awesome 23 year career I've at GM. I've seen others do stuff like that, and lose their jobs and pensions over it. Not worth the price of some lifters.
7) If you don't believe any of this, oh well, nobody is here to convince you. My name is up there, nothing to hide, and there's no value to me for posting what I did. My FB post was there to save others from $thousands in parts due to crappy lifters. This motor needed new pistons, rings, bearings, new cam. The material from these failed lifters went EVERYWHERE, and did havoc. Luckily the block was salvageable. Feel free to buy Jeg's lifters, I'm not stopping you. Just don't ask me for advice after they fail.
Launching!
Joined: Oct 2022
Posts: 206
Likes: 74
From: FL
