Magnuson Supercharger, Valve Train and other supporting mods. 2007-2013, 5.3L Chevy Tahoe

[Chrismnj]

Don't forget--we need plenty of installation pics

same feeling as when a little kid on Christmas Eve

 

[HiHoeSilver]

LOL, BTR promised t-shirt but never got one

And TYF promised us stickers....

 

[Chrismnj]

And TYF promised us stickers....

As far as BTR goes I spoke too soon, have a mysterious package on the way from them.

 

[Mickey_7106]

I remember the early c6z was dropping valves, but that was later revised by gm iirc. I don't remember hearing about lifter issues.

Not to hijack, but to add to this build so if you decided I'll leave it at that..

Not to scare you or anything but a lot of guys were complaining about failed ls7 lifters a few years ago. I avoided doing lifters with my cam swap and I regret it now since I had the stupid things in my hands and didn't want to risk it. A lot of them were Vette guys and I think there were some defective heads that led to their problems and some cams with bad lobes and race specd cams so overall I don't think it was the lifters.

I'm curious which ls7 lifters you get since BTR sells them but I don't know which ones are the genuine GM ones. @67427ss is running them and his engine sounds great. I'm thinking about ripping my heads off and doing mine.. only issue is they have like 3 different ones listed ranging from $99-over $200..for Morels..



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[bottomline2000]

I remember the early c6z was dropping valves, but that was later revised by gm iirc. I don't remember hearing about lifter issues.

I'm not gonna hijack the OP thread as its got a lot going on and he has already committed to ls7 lifters. Google ls7 lifter failure and you will see post from 09-18 about failures from various boards. Again, I think a lot goes back to bad setups, wrong pushrods lengths and defective heads. I should have looked more into it to find the common denominator since little to no failures were noted from truck guys. I will be adding ls7 lifters when I put a blower on mine FWIW..

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[67RS427]

I'm not gonna hijack the OP thread as its got a lot going on and he has already committed to ls7 lifters. Google ls7 lifter failure and you will see post from 09-18 about failures from various boards. Again, I think a lot goes back to bad setups, wrong pushrods lengths and defective heads. I should have looked more into it to find the common denominator since little to no failures were noted from truck guys. I will be adding ls7 lifters when I put a blower on mine FWIW..

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You can search google and find bad reviews/threads about lifter failures for literally any manufacturer... The point is, in my mind that with the insane QTY (Millions) of these out there from GM, there is a very small number of failures (few hundred, maybe 1k???). The percentage of failure is much less than a company that makes a few hundred/thousand sets and has a dozen or more people with bad one.

*My LS7 lifters have hit 7k RPM on occasion and my valve train is rock solid. There were designed for high RPM abuse...

 

[Chrismnj]

I'm not gonna hijack the OP thread as its got a lot going on and he has already committed to ls7 lifters. Google ls7 lifter failure and you will see post from 09-18 about failures from various boards. Again, I think a lot goes back to bad setups, wrong pushrods lengths and defective heads. I should have looked more into it to find the common denominator since little to no failures were noted from truck guys. I will be adding ls7 lifters when I put a blower on mine FWIW..

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you are not hijacking, please carry on with your point. I might be out for a bit as today we are taking the engine out but would love to hear both sides.

 

[Tonyrodz]

you are not hijacking, please carry on with your point. I might be out for a bit as today we are taking the engine out but would love to hear both sides.

SIDE NOTE--PICS!!
Carry on.

 

[Tonyrodz]

SIDE NOTE--PICS!!
Carry on.

@Chrismnj Note--weather wise--today is the day if you're outside--tomorrow, not so much.

 

[Chrismnj]

@Chrismnj Note--weather wise--today is the day if you're outside--tomorrow, not so much.

Inside job, heated garage.