StorminMatt

For whatever reason, the price of Chevrolet Performance lifters (ie LS7 lifters, Part Number 12499225) has jumped up by about $100. But Jegs has these lifters for about the same price that LS7 lifters used to go for. Jegs does not list a manufacturer, but does say they are US made? Are these by chance GM parts? And if not, are they any good?

low2001gmc

iTrader: (148)

I have used Melling Ls7 Lifters without issue after 8k miles with a Lunati 231-237 Cam. I would recommend for up to 7k rpm even though I shifted at 6700 with rev limiter set to 7k.

Just removed due to going with a bigger cam/higher rpm build and going to run Johnson's.

Just a thought and another option.

StorminMatt

With a set of LS7 lifters (12499225) going for $260.22 at Summit Racing, $199 for a set of Morel 5315’s at Tick Performance is looking like a bargain.

Floorman279

iTrader: (11)

Gm lifter prices going up seems like a good thing.

Jimbo1367

Yes. Yes it is. I always like giving a Company more money for their profit margin

Floorman279

iTrader: (11)

Not why i said that, it was meant that now it forces ppl to run a better lifter

Floorman279

iTrader: (11)

Feel bad for the non performance applications tho who dont need more than an ls7 lifter

G Atsma

Agreed. Still all that's needed for 80% of mild performance apps.

SLOW SEDAN

iTrader: (13)

Force is a strong word... can easily make 1200whp with $100 amazon lifters. Had better luck with those than all the fancy ones combined.

grinder11

iTrader: (1)

Exactly! I saw where you were coming from. The only potential problem I see with that is the aftermarket following GMs lead.....

grinder11

iTrader: (1)

The only problem with that is for everyone like you who has had good luck, there are probably quite a few who haven't been so lucky, and their $10,000-$15,000 engine was brought down by a set of $100 lifters. 16 lifters costing $100 would make each lifter only $6.25!!! A pretty complicated piece of hydraulic (or solid) equipment for a mighty small amount of $$. That's retail!! Wholesale is probably $3 something each, and the manufacturer has to make a profit, so your trusting your $12,000+ engine to a $1.50-$2.00 part. What amount was left for the neelde bearings, the roller, heat treatment, R&D, if any, etc., etc. I'm glad you've had good luck. But I'd never trust an high performance engine with those kind of parts. Maybe not even a low performance engine. To each his own. But to me, using a $100 set of lifters in an expensive engine is like playing Russian roulette; You hope like Hell you get the luck of the draw.....

Sacrilege

iTrader: (1)

A $700 set of lifters doesn’t necessarily mean quality or a proper amount of R&D either.

gnx7

iTrader: (28)

I was told that Delphi lifters and GM Performance LS7 lifters are in essence the same part.... Delphi makes all of them in their factory.... and then they sell them to GM Performance who in turn marks them up.
I've run both style lifters and never had any issues luckily. At one point Delphi lifters were $70 shipped for a set. I'm sure when hundreds of millions are made they probably cost $1 each or somewhere close to that...

ddnspider

iTrader: (26)

700whp....7k rpms.....ls7 lifters all day here.

G Atsma

I think when you consider how many factory LS7 lifters are made, some horror stories are inevitable due to the sheer weight of numbers compared to the numbers of aftermarket lifters made.
I would go so far to say that the LS7 failure rate is LOWER than any aftermarket lifter when total production numbers are considered.

ddnspider

iTrader: (26)

This is what I've been saying. You hear about so many more LS7 failures because a couple orders of magnitude MORE engines run them than aftermarket stuff.

Floorman279

iTrader: (11)

cam profile spring rates are my concerns with the ls7 lifters.

also most aftermarket lifters are 3x as difficult or more to setup than a lifter where you can be in a preload range of plus or minus .080 vs a hydraulic aftermarket where its .030 or less. which could lead to aftermarket lifter failures.....just saying

ddnspider

iTrader: (26)

There is certainly a use case for aftermarket lifters. It just gets old hearing everyone and their brother say they're trash when they'll work just fine for 99% of applications.

Floorman279

iTrader: (11)

yea i think if you are running beehives under 7000rpms they will do their job....step up to doubles, step up to at least a drop in morel, but ur halfway to an entry level tie bar.

G Atsma

What ddnspider and Floorman said. Obviously if there is a situation that is outside the safe operating envelope of the LS7, then you go aftermarket.
But as said, the LS7 will be plenty for 99% of LS street applications.