lifter info

[j91z28d1]

with all the failed lifter threads I thought this well know cam grinder/engine builder had some good insight into ls lifters.

my take away was gm changed suppliers around 2008 and nothing is any good these days. gm oem stuff having a high failure rate for many reasons. from bad heat treat, bad tolerances. over all shotty work.

 

[petethepug]

Where could GM be getting so much inferior metal for parts?

 

[j91z28d1]

Where could GM be getting so much inferior metal for parts?

View attachment 450382

right here in the land of the bored and lazy.

 

[Blackcar]

Bean counters and cost cutting !

 

[strutaeng]

Umm. I watched the video. I think he did the video to try to dispell LS lifter failure perceived "causes".

Like the guy that thinks the swedging of the lifter axle means the axle are not straight... clearly that guy doesn't understand the process, so I agree with Powell guy.

Or the guy that thinks that the lifter wheel being chewed up is the "cause" of lifter failure, but actually is the aftermarket camshaft being too soft...so it's actually the effect, according to the Powell guy.

 

[rdezs]

I've had zero issues on the lS engines I've built, using the Delphi LS7 lifters. Identified by the gold color retaining clip in the end.

An often overlooked part of an engine rebuild are the lifter bores. Just as important, if not more so, than the cylinder bores. Issues are more common with the aluminum blocks at greater than 200,000 miles. Like everything else, it comes down to regular oil changes with a full synthetic oil using quality filters. Well they are repairable with a sleeve, the economics of repairing it depends on how many lifter bores need to be addressed.

 

[rdezs]

 

[j91z28d1]

he did mention those ls7 lifters with the gold clips by Delphi being the only real ls7 litter. I didn't realize Delphi still made lifter.

some good info here. my take away is if you can find them, those gold clip ls7 lifters might be the only good lifters at any price. besides maybe Johnsons. which are really expensive and should not be needed for daily drivers.


but yes, I wasn't talking about him breaking down the other guy's video as much as some of the off hand info talked about being stuff I didn't know and haven't seen talked about. since they built tons of engines and grind and heat treat cams in house. it felt like solid info, compared to other guesses I've seen.

 

[Pressureangle]

I just suck up the price pain and use Morel.

Straub Tech - Morel Lifters

With 25 years of experience in the Performance Industry Straub Technologies has built relationships with many of the top companies. Our ability to source, design, and sell products to satisfy your performance needs of $100M a year industry giant or a racer with $10 to spend has built our...

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[Charlie207]

I grabbed a set of these last summer. I don't ever go to casinos, but love rolling the dice for some reason.

LS7 Lifters GM Performance 12499225 / 25341990 - SMC Performance and Auto Parts

LS7 Lifters GM Performance 12499225 / 25341990 - Available at SMC Performance and Auto Parts

www.smcautoparts.com