"Boost your LS truck block... they love boost..." THEY SAID

[popo8]

This is the 3rd or 4th junkyard block out of the mustang that belongs to a friend of mine. Its a light, gutted notch.... and the thing did make crazy power, and was a high 8 or low 9 sec car (I can find out specific numbers if necessary).

But I just wanted to post up pics of his latests catastrophy at the track.... He was throwing in excess of 20 lbs at the engine.... (I think its just has a good rotating assembly and cam in it).



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[popo8]

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[SexyTransAm]

Dude I was just watching youtube videos of that car lol.

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[popo8]

Dude I was just watching youtube videos of that car lol.

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LOL.. Jace is a good friend of mine. If you look at my OCMD pics... lots of pics of his car....

[Blackbird96WS6]

Holy crap, it looks like he has a whole junkyard in his oil pan! That sucks!

[popo8]

Holy crap, it looks like he has a whole junkyard in his oil pan! That sucks!

He has actually been stock piling 6.0s so its like just another day for him..... They may be cheap to make power... and I know it holds together (reasonably) but how many times do you build it till the cost equates to doing it the more costly and "RIGHT" way later....

IDK, to each their own... all I know is he flys.. and that car will be back on the road by the weekend.

[Chris]

Damn im impressed.

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[Paulster2]

@popo ... I'm sure you read the CHP article (I think it was CHP) where they used a 5.3L (later to find out is was actually a 4.8L) truck engine, threw two e-bay turbos on it, and boosted the crap out of it. The idea was to see at what point the stock block would fail. 60 some dyno runs and 27psi of boost later, the engine still had not given up the ghost ... stupid little thing was putting out over 1200hp ... and the engine never gave up (had controller issues and ran out of dyno time, I believe). They dropped a minimal amount of money into the combo. Something like this could possibly run an entire race season (or give them a run on Pinks-All Out -- haha!) ... and if it did give up, how much would it cost to replace a 4.8L long block?

On a separate note, I'm wondering if the shorter throw of the 4.8L crank might have given it some longevity? Just a thought.

[Blackbird96WS6]

He has actually been stock piling 6.0s so its like just another day for him..... They may be cheap to make power... and I know it holds together (reasonably) but how many times do you build it till the cost equates to doing it the more costly and "RIGHT" way later....

IDK, to each their own... all I know is he flys.. and that car will be back on the road by the weekend.

No kidding, do it once, do it right... Spend more up front to save more in the long run...

[popo8]

I did not read that... But soumds interesting...and i agree with ur theory that the small stroke make it stronger.

Co-Owner/Admin @ LTXtech.com

[SexyTransAm]

@popo ... I'm sure you read the CHP article (I think it was CHP) where they used a 5.3L (later to find out is was actually a 4.8L) truck engine, threw two e-bay turbos on it, and boosted the crap out of it. The idea was to see at what point the stock block would fail. 60 some dyno runs and 27psi of boost later, the engine still had not given up the ghost ... stupid little thing was putting out over 1200hp ... and the engine never gave up (had controller issues and ran out of dyno time, I believe). They dropped a minimal amount of money into the combo. Something like this could possibly run an entire race season (or give them a run on Pinks-All Out -- haha!) ... and if it did give up, how much would it cost to replace a 4.8L long block?

On a separate note, I'm wondering if the shorter throw of the 4.8L crank might have given it some longevity? Just a thought.

Yes the shoter stroke had alot to do with it.

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[SexyTransAm]

Watching his videos make me wanna hurry up on my turbo lq4 build goin in my 80 TA!

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[Fastbird]

It was an article in Hot Rod.....I may have it somewhere. They changed ring gaps, can, ported heads, but other than the rings the lower rotating assembly was only disassembled and inspected, the reassembled with the same bearings even. Pretty impressive considering you can get one for the $750 range at pretty much any junkyard.

Posted from my Rooted and ICS'd Rezound

[Paulster2]

It was an article in Hot Rod.....I may have it somewhere. They changed ring gaps, can, ported heads, but other than the rings the lower rotating assembly was only disassembled and inspected, the reassembled with the same bearings even. Pretty impressive considering you can get one for the $750 range at pretty much any junkyard.
They said the only real reason they tore the engine down was to ensure they knew what they had to start with. IIRC, they only cleaned up the heads ... not a true porting job. Very impressive ...

Here's the article for those who might care: http://www.hotrod.com/techarticles/hrdp_1109_stock_gm_ls_engine_big_bang_theory/

Yup, you are correct about it being in HRM. I get both mags so forget where I read things sometimes.

EDIT: I stand corrected ... the heads were ported.

[BLK95-Z]

They said the only real reason they tore the engine down was to ensure they knew what they had to start with. IIRC, they only cleaned up the heads ... not a true porting job. Very impressive ...

Here's the article for those who might care: http://www.hotrod.com/techarticles/hrdp_1109_stock_gm_ls_engine_big_bang_theory/

Yup, you are correct about it being in HRM. I get both mags so forget where I read things sometimes.

EDIT: I stand corrected ... the heads were ported. Whats even more impressive is they made over 60 pulls with that engine - most over 1000hp. I know a guy with a turbo L33 (aluminum 5.3) with nothing but valve springs and a cam. Makes over 700whp though a stalled th400 and 9" for over 2 years now. To his credit we have one of the best LSx tuners on the east coast right here in town.....

[Paulster2]

Whats even more impressive is they made over 60 pulls with that engine - most over 1000hp.

Absolutely ... dyno pulls are not what I would call easy on an engine. 60 pulls back to back is working that thing pretty hard. Do you think it was broke in yet? :laugh:


I know a guy with a turbo L33 (aluminum 5.3) with nothing but valve springs and a cam. Makes over 700whp

That's about 840-ish to the flywheel ... not too shabby.


... To his credit we have one of the best LSx tuners on the east coast right here in town.....

Nothing wrong with that :-) Just in KY? If I am able to get into a 408 build like I want for my truck, I may come calling! Just have to find some money ....

[BLK95-Z]

Absolutely ... dyno pulls are not what I would call easy on an engine. 60 pulls back to back is working that thing pretty hard. Do you think it was broke in yet? :laugh:
Yeah, Id say shes plenty broken in after that....lol. The gen IV's hold up so well its almost pointless to build a motor for anything less than 700whp.

[SexyTransAm]

Whats even more impressive is they made over 60 pulls with that engine - most over 1000hp. I know a guy with a turbo L33 (aluminum 5.3) with nothing but valve springs and a cam. Makes over 700whp though a stalled th400 and 9" for over 2 years now. To his credit we have one of the best LSx tuners on the east coast right here in town.....

I assume you are talking about Anthony at fast track?

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[BLK95-Z]

I assume you are talking about Anthony at fast track?

Sent from my SAMSUNG-SGH-I547 using Tapatalk 4 BetaYes sir. Have you ever been to his shop?

[Sahara54]

popo8 What is the blue fox running for engine management? Stock LS, Squirt, Xfi...

[SexyTransAm]

Yes sir. Have you ever been to his shop?

No never been up there

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[firebird_1995]

*in a cookie monster voice*
Mmm pistons, nom nom nom nom.....

Most of the high boost success I've seen on the stock bottom end ls engines is from the 5.3 or 4.8. The 6.0 can do it too, but it seems like they fail at a higher rate than the smaller displacement engines.

[Paulster2]

So, I was looking around on the Google search I saw this article (http://www.truckinweb.com/tech/engine/1213tr_vortec_5_3l_big_bang/viewall.html) from a sister publication of HRM, Truckin Magazine. They did the same basic test as HRM did, but used a LY7 for the test. I would bet, from the description of it, they actually used the same add-on parts HRM used (intake, turbos, intercooler, etc), though they used a lot better set of heads and a much more radical cam than HRM did. Final judgement: 1304 hp @ 24.2psi. They were trying to get the LY7 to blow up as well, but never quite got there either. They did have a lifter failure (what they were saying was caused by valve float ... ). Still showing a very stout engine here, no doubt about it. Just found it interesting is all.

[Badbird_96]

Wonder what a lh6 will handle :D

[BLK95-Z]

Wonder what a lh6 will handle :DAlot....after you delete the DOD :)

[Badbird_96]

Yeah that could not be good for boost lol

[Paulster2]

Wonder what a lh6 will handle :D


Alot....after you delete the DOD :)
Not know if your answer is sarcasm (doesn't seem to transmit through the ether for some reason ... ) ... seeing as how the LH6 is an aluminum block, I'm wondering how much boost it would actually handle? Also, I think you'll run into the same longevity issues popo is talking about from the beginning of this thread. JMHO, though.

[Badbird_96]

It is a legit question but the joke part is i just bought my wife an envoy denali with the lh6 in it. Like she would let me boost it lol

[Paulster2]

It is a legit question but the joke part is i just bought my wife an envoy denali with the lh6 in it. Like she would let me boost it lol

Bwahahahaha! I know EXACTLY what you are saying ... my wife tells me she would love an older Porsche 911, but tells me I'd not be able to touch it mechanically ... I'm like WHAT??? I don't think she'll ever be getting one under those conditions. There is no way I could EVER afford to allow someone else to work on a Porsche for her, or find one I could afford to buy which wouldn't require any work. So, I'm the bad guy because I haven't bought her dream car for her yet ... will it ever end.

[joelster]

That timeslip has me baffled. It traps 122 in the 1/8th (which is FLYING) and then only goes 135 in the 1/4. It picked up 13mph. My car picks up roughly 25-27mph on the backhalf. Something was wrong or it's simply running out of gear. As far as the carnage, I'd bet his tune is just too aggresive. Those motors can make 800hp all day long if the tune is dead-on, and not hurt anything. It sounds like he has his shit together though, so maybe he just had a weaker 6.0 to start with? Just because you see a truck in the junkyard, doesn't mean the engine will be flawless. When you are at the boneyard looking for an engine or a transmission, look at the cars that were wrecked. A wrecked car means it was running when it went to the junkyard. A car sitting in the junkyard with a perfect body means it had a serious mechanical issue causing its demise.

[Paulster2]

... When you are at the boneyard looking for an engine or a transmission, look at the cars that were wrecked. A wrecked car means it was running when it went to the junkyard. A car sitting in the junkyard with a perfect body means it had a serious mechanical issue causing its demise. VERY good advice :D

[popo8]

That timeslip has me baffled. It traps 122 in the 1/8th (which is FLYING) and then only goes 135 in the 1/4. It picked up 13mph. My car picks up roughly 25-27mph on the backhalf. Something was wrong or it's simply running out of gear. As far as the carnage, I'd bet his tune is just too aggresive. Those motors can make 800hp all day long if the tune is dead-on, and not hurt anything. It sounds like he has his shit together though, so maybe he just had a weaker 6.0 to start with? Just because you see a truck in the junkyard, doesn't mean the engine will be flawless. When you are at the boneyard looking for an engine or a transmission, look at the cars that were wrecked. A wrecked car means it was running when it went to the junkyard. A car sitting in the junkyard with a perfect body means it had a serious mechanical issue causing its demise.

Well the slip i ded legit...

And he is in excess off 800hp... here is the thing...he just put a BIGGER turbo on it before its death..

Lol.




Co-Owner/Admin @ LTXtech.com

[dawdaw]

@popo ... I'm sure you read the CHP article (I think it was CHP) where they used a 5.3L (later to find out is was actually a 4.8L) truck engine, threw two e-bay turbos on it, and boosted the crap out of it. The idea was to see at what point the stock block would fail. 60 some dyno runs and 27psi of boost later, the engine still had not given up the ghost ... stupid little thing was putting out over 1200hp ... and the engine never gave up (had controller issues and ran out of dyno time, I believe). They dropped a minimal amount of money into the combo. Something like this could possibly run an entire race season (or give them a run on Pinks-All Out -- haha!) ... and if it did give up, how much would it cost to replace a 4.8L long block?

On a separate note, I'm wondering if the shorter throw of the 4.8L crank might have given it some longevity? Just a thought.

It's impressive, but throw that set up in a car and take it to the track and see what happens.. first amount of load that motor gets, bye bye.. IMO unless you sincerely enjoy/like to work on a car, people that try to push the limits of a stock bottom end are trying to set a pretty retarded record. Your tuning window is extremely extremely small and at the end of the day, congrats you pushed a stock bottom car to a fast e.t. lol... I Really don't understand it but that's just me, you exert all your time, energy, effort and money into the power adder, top end, and the rest of the car and leave the part that takes the power, stock lol.. I just don't see any logic in it. it's basically like who has the biggest pecker/fastest car lol.

[BLK95-Z]

It's impressive, but throw that set up in a car and take it to the track and see what happens.. first amount of load that motor gets, bye bye.. IMO unless you sincerely enjoy/like to work on a car, people that try to push the limits of a stock bottom end are trying to set a pretty retarded record. Your tuning window is extremely extremely small and at the end of the day, congrats you pushed a stock bottom car to a fast e.t. lol... I Really don't understand it but that's just me, you exert all your time, energy, effort and money into the power adder, top end, and the rest of the car and leave the part that takes the power, stock lol.. I just don't see any logic in it. it's basically like who has the biggest pecker/fastest car lol. A dyno doesn't put a load on the motor? Thats news to me....This guy has been blowing 22 pounds through his stock 4.8 for 2 seasons
http://www.youtube.com/watch?v=onuPyd-OGCA[/URL] [URL]http://www.youtube.com/watch?v=tZJQzVsihvQ

[popo8]

Depends on the dyno. A mustang dyno puts load on in one way...and a dyno jet does it by utilizing the brake.

Turbo guys usually like the mustamg dynos cause theybare more turbo friendly.

Co-Owner/Admin @ LTXtech.com

[dawdaw]

A dyno doesn't put a load on the motor? Thats news to me....This guy has been blowing 22 pounds through his stock 4.8 for 2 seasons
http://www.youtube.com/watch?v=onuPyd-OGCA[/URL] [URL]http://www.youtube.com/watch?v=tZJQzVsihvQ

no it does put a load, not close to the load it would see at the track, and ok...a dyno is a tad bit different than the track... and that's awesome bro you should jump on the bandwagon with him :jest: thanks for the video... you made your point with one person, probably ton's more like that guy right? :jest:

[BLK95-Z]

no it does put a load, not close to the load it would see at the track, and ok...a dyno is a tad bit different than the track... and that's awesome bro you should jump on the bandwagon with him :jest: thanks for the video... you made your point with one person, probably ton's more like that guy right? :jest:You mad? I appoligize if that video hurt your feelings but I can post links to high hp 4.8 builds all night. I enjoy and respect both platforms like any true GM fan should. I think your the one on a bandwagon... :tt2: :jest:

[Chris]

Ok ok I like big butts and I can not lie about this fact in specific

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[Fastbird]

I think there's a misconception as to dyno's and loading here. Dynojets, at least the widely used 248C, are not able to place a load on the vehicle other than the load of the 3000lb drum being turned. Mustang dyno's, Dyno Dynamics dyno's, engine dyno's can all be loaded up to real world conditions using the vehicle weight, frontal surface area, etc. So yes, a dyno can indeed be loaded up and present an equal load as if on a track.

There's a handful of people running really well with turbo's and stock 5.3 motors. Not everyone runs well, but fact of the matter is that who cares if you grenade the 5.3? They're cheap, and tuned well will take a shit ton of abuse and keep on trucking. I believe the RX7 above is Skinnies and he's really pushed the limits of one, but he's also got an insanely light car to boot. His formula worked to his advantage. It doesn't for everybody. But if you can understand people wanting to go fast, do it cheaply, and aren't concerned about something popping, then you see the draw that the 5.3 motor has when coupled with a turbo. It's been done over and over, and will continue to be done with success.

[popo8]

I think there's a misconception as to dyno's and loading here. Dynojets, at least the widely used 248C, are not able to place a load on the vehicle other than the load of the 3000lb drum being turned. Mustang dyno's, Dyno Dynamics dyno's, engine dyno's can all be loaded up to real world conditions using the vehicle weight, frontal surface area, etc. So yes, a dyno can indeed be loaded up and present an equal load as if on a track.
.....

Great explaination Sean

Co-Owner/Admin @ LTXtech.com

[dawdaw]

You mad? I appoligize if that video hurt your feelings but I can post links to high hp 4.8 builds all night. I enjoy and respect both platforms like any true GM fan should. I think your the one on a bandwagon... :tt2: :jest:

extremely lol really got to my feelings :cry:.. on the same page as you I respect any platform, and anyone that builds and puts time, money, and effort into a car whether it's an import or muscle car or anything in between... pretty far from being on one bandwagon but go ahead and make ASSumptions it's quite funny:jest::jest: and ya you can post links all day, i'll be sure to read them and soak it in. It's funny all you see is the extremely small amount of people that have success with these motors, that are in 2000 lb cars.. but you can't see the countless failures with them though and how often there replacing shit. You should again, jump on the bandwagon with them, it's gotta be awesome to be just like everyone else :supergay:

[BLK95-Z]

extremely lol really got to my feelings :cry:.. on the same page as you I respect any platform, and anyone that builds and puts time, money, and effort into a car whether it's an import or muscle car or anything in between... pretty far from being on one bandwagon but go ahead and make ASSumptions it's quite funny:jest::jest: and ya you can post links all day, i'll be sure to read them and soak it in. It's funny all you see is the extremely small amount of people that have success with these motors, that are in 2000 lb cars.. but you can't see the countless failures with them though and how often there replacing shit. You should again, jump on the bandwagon with them, it's gotta be awesome to be just like everyone else :supergay:I think its pretty obvious your "countless failure" argument is one sided and misinformed. BTW.... Ive been driving/modding LT1 Camaro's for the past 16 years

[Chris]

Ok thats enough engines like boost until they break