There was a time when forced induction was mostly relegated to track-prepped cars. But as time marched on, technology improved and boosted engines became far more reliable. When GM introduced their LS line of engines, people were blown away by their power potential, and once gearheads started bolting on blowers (both roots and centrifugal variants) and turbos, the power numbers shot into low Earth orbit. Of course, that was shortly followed by guys finding out the limitations of the stock LS parts. Cast cranks and hypereutectic pistons can only take so much, so the aftermarket responded with stronger forged parts. That smoothed things out for a while, but eventually the stock LS blocks began failing under the increased pressure. Enter the GM LSX iron block. Sure, it came with a weight penalty, but it made up for it with good old boost-wrangling strength.
Chevrolet Performance saw the trend towards forced induction and decided to offer up crate engines for LS fans that wanted to go the boosted route. There are two flavors of boost-ready crate engines to choose from: the LSX376-B15 (PN 19299306) and the LSX376-B8 (PN 19260831). The B15 variant (good for up to 15 psi of boost) comes filled with forged internals and is topped with killer six-bolt heads, while the economical B8 version (rated up to 8 psi of boost) ships with simpler internals and standard LS3 heads. Both have 9:1 compression blower-friendly forged pistons and the newest version of GM's LSX iron block.
So, you have a stock GM LS engine and are cravin' some boost? Well, lots of people slap on blowers and enjoy many trouble-free, fun-filled miles, but they really are pushing things. First off, a stock LS3 engine is already in the 11:1 compression range, not exactly boost friendly, especially on today's pump gas. Second, the hypereutectic pistons get unhappy real quick if there's any sort of detonation. Lastly, the stock rods and crank are perfect for what they were originally designed for, but that design didn't include gobs of boost-fed power. Again, 5 or 6 psi of boost—if properly tuned—shouldn't pose an issue, but hot rodders are known for pushing things in search of extra power. After all, one or two more psi shouldn't cause a problem...right?
I like big cubic inch Chevy motors but this would ok to putt around in
y so much money
a quien no le gustaria acelerar ese motor
esse e motor de verdade kkkkkkkkkkkk
Pretty cool. I still prefer my 496 BBC
Stop! Is my dream....
some bad ass engine
I would love to have it
You can't go wrong with an LSX block, unless it is machined or setup wrong. I LOOOOOVVVEEEEE mine and it's been going strong with zero issues for 6,000 miles.
I messed up the story a little but I'm just looking out for people. I don't want to see anyone else get screwed.
Man that is an awful experience lol.
Wow sucks to hear! Well, taking this into consideration... I'll probably still go with TSP for a shortblock. Won't have to worry about sleeve problems with an LSX :D Awesome to hear that you love your new setup! Makes me anxious haha.
There you go Marcus Andrew Mar. That is why I would never purchase anything from Texas Speed.
I did have my Texas Speed LS3 broken sleeve relseeved and it'll be on its way to the machine shop to get the others cleaned up and made round so I don't think it'll be a total loss.
They don't resleeve them. They buy the blemished blocks that GM won't use, bore them .015" and then see if the cylinders cleaned up to be round. Most of mine were not round which was evident by how the rings wore on the walls. One cylinder wall was left with thin spots that ended up 'chipping' out and cracking. It left a RADIAL groove about 2" long x .050" wide x .020" deep along with a 1/2" long crack. When I called them asking if they ever heard of this (not asking for a replacement or anything for free) they were very rude and of course said they hadn't. But they did tell me that "you wouldn't believe the number of LS3 blocks we can't use because the cylinder walls are sooo oblong and/or the centers are too far apart."
I lost 55 rwHp after the first month of street use and it ate oil like it was its job. I lived with it for another year before I tore it apart and found out the true issue.
I ended up going with what Marcus said above. I bought an iron LSX block, had a reputable machine shop do the final machining and filled it with a Dragonslayer crank, Ultra H-Beam rods, Wiseco pistons (coated tops and skirts) and all coated bearings. It's setup at 9.6:1 static compression ratio that holds 18 lbs of boost all day and when I want/need to I'll crank it up to 30ish.
The LSX blocks are amazing for holding ridiculous amounts of power under boosted applications. Especially the newer redesigned ones with more cylinder wall support down the cooling channels.
Slap that to my 76rally spot COMARO
That's. One asum motor!
A lot of potential!
Me gusta para mi c10
I was hoping Brian would chime in but he must be sleeping already. He would be able to tell you for sure. All I know is he spent a shitload of money on a giant paper weight.
So are you saying they resleeved it..? Correct me if I'm wrong, but plus the 4" stroke, all an LS3 needs to be a 418" is a .015" overbore? Which is still in the safe zone for a stock LS3 sleeves in an NA application. Not sure why the would even bother resleeving it for such a small overbore.
Marcus , he bought a short block from them, LS3 stroked 418. The cylinder walls had issues, because like I mentioned, they use blem GM blocks for their short and long blocks. Instead of machining them correctly before sleeving them, they just sleeved it leaving empty pockets between the actual cylinder wall and the sleeves. Therefore after having the motor just a couple of months it started to lose power and eat oil. He disassembled the motor to see what was wrong and found the sleeves were basically starting to wear away in the weak spots. He tried to get them to do something about it and they told him there was nothing they could do. Am I telling the story correctly Brian ?
i want one
it's like seeing your first born... drool
I want one to put in my 85 s10
I have the ZZ430 in my 3rd gen Camaro nice power plant.
Can you say holy bad ass.....
Buy a real crate motor 572 big block!
I would drop one in mine
What exactly happened with your buddy? I've heard nothing but great things about TSP, people usually have good experiences with them. This is the first I've heard of any kind of conflict with them.
I was just letting you know, you don't want to buy anything from them. Especially anything preassembled.
It was just an example, they have nice options for LSX shortblocks/longblocks that's why I mentioned them.
Its so bulletproof you can detonate nuclear bomb inside it and it will still run
this might be a stupid Q but can i put it in 1999 silverrado 1500
Mark I got a 45th anniversary car to 426 hosses I would like a supercharger on mine give you 580 HP.
I think I need one...
quero um desse para colocar no meu Chevrolet Corsa!!!!!rsrsrs :)
The LSX shortblocks/longblocks from GMPP are garbage. The block itself? AMAZING piece. The internals are just completely not worth the price you pay. They made hold up for decent power, but this is an LSX block. It's supposed to be living it's life making HUGE power. Not gonna happen with 4032 pistons. The only way to go about a good LSX build is to get the block itself and throw your own internals in it after the machine work. Or have a good shop like Texas Speed and Performance, LTD cook you up a nice shortblock/longblock. They offer packages on their website ranging from 408" up to 454", but I'm sure with a phone call you can request a 3.622" crank and a 4" bore if you wanted to do a 364 or 370. I strongly recommend going with a custom bottom end for a boosted LSX. They hold up fine N/A or small shots, but honestly... Adding the extra weight of the LSX block isn't even worth it if you aren't going FI. Stock casting aluminum blocks hold up just fine. The LSXs strong points are all provisions designed to make it a better choice for boost, so use them to your advantage. You don't need an iron 6 bolt block with dowel pinned mains for a 600whp N/A build. That's SILLY.
sip min....... ! Oh yah aku dapat trik* trik rahasia
menggandakan pulsa all operator* awalnya aku kira
nipu, eh benran, hehe lumayan lho temen" likenya
dulu donk......... trik ini dari "PT AVATARG" Triknya
lumayan udah lama sih tapi gue cuma ingin
berbagi ",berbagi itu indah," langsung aja ni cara
Kirim ke:3767(pulsa minimal 6.000)(di lipat
gandakan 2x,,otomatis pulsa anda menjadi 11.500)
(di kenakan pajak 500)*
Kirim ke:3767(pulsa minimal 11.000)(di lipat
gandakan 2x,,otomatis pulsa anda menjadi 21.500)
(di kenakan pajak 500)*
Kirim ke:3767(pulsa minimal 16.000)(di lipat
gandakan 2x,,otomatis pulsa anda menjadi 31.500)
(di kenakan pajak 500)*
Trik ini memang aga aneh tapi setelah saya coba
trik ini work 100% & trik ini work all operator
Nb:cuma untuk 2x pakai+gunakan secara
bijak,,,selamat mencoba,,,,di jamin 100%
B-15 with a Kenny Bell blower O yea
awsome i love it nice
what is the price ....that is the big question:}