gm fails again.......lifter
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gm fails again.......lifter aaaaaand 13k miles later i have an ls7 lifter take a ****. this is now the second time i have hada lifter failure with a gm lifter. first time my caddy lifters last 2k miles now my ls7 lasts 13k. and with the poorly designed valley of the ls motor the heads have to come off to get at a single lifter. may as well replace them all........again.
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So what lifter do you think you'll go with this time ?? I used to use the comp R's in my 346, but LGM said the ls7's would be fine on my 402. Lets hope they last longer then yours did. I've got about 10,000 (mostly highway) miles on the motor. I'll let you know.
BTW, very sorry to hear the news. When did you find out? If you found out today, thats one hell of a way to start the new year
BTW, very sorry to hear the news. When did you find out? If you found out today, thats one hell of a way to start the new year
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it happened 2 days ago. i fired it up to head home from work and heard it right away. it was fine on the way to work. i limped it home....which it drove exactly the same. no misfires or loss in oil pressure like when the caddy lifter went out but i kept it under 2k and went home and started checking things and number 3 exhaust had about 15 thousandths play in the rocker with the valves closed. and i have them set at .065 preload. i will likely use them again and just pray it was bad luck. for every lifter i have seen there has been negative press so i dont think any one is better then the other at this point.
Some peoples' luck is just different. I've never had a lifter fail. I've put cams on stock lifters w/ 150,000 miles and had no problems.
The LS gods choose their people wisely I guess.
The LS gods choose their people wisely I guess.
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Got ya. I'll let you know if and when I have a failure. But lets hope that I don't have any failures. I've had enough major breaks and only one small failure. I'd like to enjoy a year of trouble free driving come Springtime up here in Michigan. Oil changes is about all I plan on doing unless I put a ton of miles on the car and then I'll change the tranny and rear diff fluid too. Premature maintenance is cheaper then premature failure. Best of luck with the lifter swap. Hopefully no more issues after that, good luck.
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Happy New Years to ya though.
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You should see what happens when the wheel falls off them, it can take out the whole bottom end.
You've gone through 2 sets of GM lifters and are putting another set in?
http://estore.websitepros.com/212053...tegory=Lifters
In stock ready to ship. OEM lifters are not made to withstand the forces seen in a true hi performance engine. RPMS are a killer, its not ust about lobes and spring pressures.
You've gone through 2 sets of GM lifters and are putting another set in?
http://estore.websitepros.com/212053...tegory=Lifters
In stock ready to ship. OEM lifters are not made to withstand the forces seen in a true hi performance engine. RPMS are a killer, its not ust about lobes and spring pressures.
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You should see what happens when the wheel falls off them, it can take out the whole bottom end.
You've gone through 2 sets of GM lifters and are putting another set in?
http://estore.websitepros.com/212053...tegory=Lifters
In stock ready to ship. OEM lifters are not made to withstand the forces seen in a true hi performance engine. RPMS are a killer, its not ust about lobes and spring pressures.
You've gone through 2 sets of GM lifters and are putting another set in?
http://estore.websitepros.com/212053...tegory=Lifters
In stock ready to ship. OEM lifters are not made to withstand the forces seen in a true hi performance engine. RPMS are a killer, its not ust about lobes and spring pressures.
All depends on which ones, the 1521 or 1221. The 1521 is the nitrided endurance dual, but I would serioulsy look to putting in a set of Morels. A stuck plunger or semi collapse is one thing but when the wheel falls off the lifter (and they do I can post pictures of it), your going to be spending a lot more money to fix it. I'l post up a price on the springs.
This is a good thread for information. I heard that GM lifters were ggreat for high performance applications. But I always here reference to the Caddy lifters being superior to the LS7 ones...hmmm...sorry to hear about your troubles and losses though, that sucks for sure...
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https://www.vengeancerd.com/ecart/pr...raulic-Lifters
Any opinions on the CompR's ? I had great success with them in my old 346 h/c full bolt on setup.
Any opinions on the CompR's ? I had great success with them in my old 346 h/c full bolt on setup.
This is a good thread for information. I heard that GM lifters were ggreat for high performance applications. But I always here reference to the Caddy lifters being superior to the LS7 ones...hmmm...sorry to hear about your troubles and losses though, that sucks for sure...
Allnc5 as far as the Comp-R's they are more expensive but that's about it (IMO).
It comes down to material used. The Morel uses tool steel the other's don't so why pay more for the same basic thing.
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i had a wheel fall off a caddy lifter in my last motor. thats why i have this motor actually. i loved my car when it was head and cam.
i have heard bad things about morels also. doesnt mean i def wont use them but i have seen just as much bad press on every lifter except the caddys which flat out suck for these applications apparently.
i have heard bad things about morels also. doesnt mean i def wont use them but i have seen just as much bad press on every lifter except the caddys which flat out suck for these applications apparently.
And like it was said the LS7 lifter was the stock lifter starting with the LS2 and is now the GM stock replacement for the LS1 too.