Noah Burns

iTrader: (5)

so no hard facts about LS7 lifter failures huh, just generalities and "it happened to so and so" stories....

BLKSSLTT

iTrader: (12)

Iv heard of a few myself that's why I asked about the btr. Iv got 100k my motor. I'd like to replace them with a quality unit. Gaskets I'm open to anything. I'm just looking to get the most out of the swap without running into any issues or having them let go. What is the Benefit of the ls9 gasket?

Noah Burns

iTrader: (5)

I've got 105k on my 5.3L and will be doing DoD delete soon with LS7 lifters myself, no concerns personally. I rev'd stock 2001 Silverado lifters 7,000 RPM for a LONG time so these that are actually designed for high RPM should be good for the 6150 I turn this engine about twice a month lol.

Choda

iTrader: (1)

for those of us looking to use the triple 12 cam the ls7 lifters should be fine. Soooo many people use them with great success.

grey matter 04

iTrader: (9)

Brand new ls7 lifters in my brand new 5500 mile 370
Done sounds like 2 marbles slapping together 18-2500rpm.
Engine was fully built by a reputable shop .

batboy

iTrader: (6)

I've heard good stuff about the Brian Tooley lifters. Definitely get new lifter trays. The LS9 gaskets are good if you plan to boost the engine. With nitrous, you can use the standard GM MLS gaskets for L92/LS3/L99 engines if you want to save a few bucks.

Noah Burns

iTrader: (5)

so what was the diagnosis by that reputable shop as to what caused the failure to the engine?

grey matter 04

iTrader: (9)

Haven't pulled it apart yet to see what exactly happen

black00chev

iTrader: (2)

This is the cam I have and had a lifter collapse right out of the box and the new ones still sound louder than they should sometimes.
I was experiencing a bad tap after driving for 15min or longer. Seems a lifter would pump down and then it eventually completely collapsed.
Im on the isky 212/.561" cam and had a lifter failure.
I had a lifter that would start tapping bad after driving for 15min+ and it eventually collapsed completely.
Go look in the FI and Build sections, both issues I saw were documented, aside from my own issue.
This is how my lifters still sound sometimes. Im going to try running a 5w-40 at my next oil change here soon to see if that helps quiet them down.

I wish I would've just gone with the Brian Tooley Racing lifters from the start.

ososlowsierra

I bought a lq4 with 180,000 miles for $350 replaced all gaskets oil pump, timing chain, and lifters used stock pushrods and springs and my valve train is quite a bit louder than my old 190,000 4.8 but oil psi is great and have went on about 3 200+ mile road trips so far and the noise hasn't changed. Thank god