Anything built by Kurt Urban, Billy Briggs, or Proline should be alright

 

GM LSX BOOST READY SHORT BLOCK
$9687.00 retail
GM part # 19299306
LSX 376ci 6 bolt,forged crank,rods,pistons..

NEW! Forged internals and 6-bolt LSX
heads that support more boost!
For builders who want to stretch the performance of a turbocharged
or supercharged combination, we’ve got just the foundation you need:
Chevrolet Performance’s new LSX376-B15, featuring a durable, allforged
rotating assembly to handle up to 15 pounds of boost.
Chevrolet Performance’s engineers started with the tough LS steel
Bowtie standard-deck block, added a forged steel crankshaft, forged
rods and forged pistons, then topped off the short-block assembly
with high-flow, rectangular-port LSX- LS3 6-bolt aluminum heads for
supercharged and turbocharged combinations.
We deliver the LSX376-B15 without an intake manifold and other
accessories, allowing you to tailor the induction system and other
features to suit the forced-induction setup of your choice. It’s perfect as
an economical replacement for a late-model performer or a great choice
to build a high-boost power plant for a Pro Touring classic.
*Horsepower and torque ratings were derived by GM Engineering using
a normally aspirated LSX376 with LS3 EFI. Your power numbers may
vary, based on induction system and componentry.
Check out our LS1 Engine Kit Installation Guide #88959384 for details on
installing an LS engine in a vintage vehicle.
450 HP @ 5900 rpm* 444 LB-FT @ 4600 rpm*
LSX376-B15 Tech specs
Part Number: 19299306
Engine Type: LSX-Series G en IV Small-Block V-8
Displacement (cu in): 376 cu in (6.2L)
Bore x Stroke (in): 4.065 x 3.622 (103.25 x 92 mm)
Block (P/N 19260095): LSX cast-iron with 6-bolt,
cross-bolted main caps
Crankshaft (P/N 12603616): Forged 4340 steel
Connecting Rods (P/N 12607475): Forged powdered metal
Pistons (P/N 19259381): Forged aluminum
Camshaft Type (P/N 12638426): Hydraulic roller
Valve Lift (in): 0.560" intake / 0.555" exhaust
Camshaft Duration (@0.050 in): 210° intake / 230° exhaust
Cylinder Heads (P/N 19201805): LSX-LS3 rectangular port; with
“as cast” 68cc chambers and
6-bolt attachment
Valve Size (in): 2.160 intake / 1.550 exhaust
Compression ratio: 9:1
Rocker Arms (P/N 12569167 int): Investment-cast, roll trunnion
Rocker Arms (P/N 10214664 exh): Investment-cast, roll trunnion
Rocker Arm Ratio: 1.7:1
Recommended Fuel: 87 octane
Maximum Recommended RPM: 6,600
Reluctor Wheel: 58X
Balanced: Internal


Page 142 in 2013 GMPP catalog or go here...

http://www.chevroletperformance.com/...te/?q=19299306

 

AES! I recently had an opportunity to visit their shop and see some of their work. I was impressed.

 

AES 410 cu in motor
All pro heads 12-1
Marcella intake
Modular turbo/CBR performance twin turbo kit

It will make 1000hp without even trying. You will be replacing all of your drivetrain with a setup like this.

 

First question that shoulda been asked...whats your budget?

The real budget. Cause you can buy a motor from in the hundreds,...to the thousands...

 

Junk....

For less money you can fill a lsx block with a dragonslayer crank, ultra I beams, your choice of piston and choose what you want the CID to be. That 376 is no deal.

 

Totally agree breecher . I'm not gonna spend 10k on a short block that can handle 15 lbs of boost and has stock internals when I can spend 8k and build one with top of the line internals and can handle 30+lbs of boost

 

I have a currie f9 fabricated 9 inch with back brace. I will be running a 10 inch ring gear and 35 spline axles . Even tho the carrier is rated for 750hp it will never hook up with that power also going to run a jakes stage 5 4l80e

 

ERL

AES

Kurt Urban


I went AES.

They do power the worlds fastest lsx after all. that 5.3 shortblock they have for under 3k is unreal. I mean people here are making 800+ on stock bottom end ones. Some a little less but still running all season....so buying one forged....and one that has that much strength in the bottom end and block......its a no brainer. just do that and some 317 heads with ls9 and studs and you come out to a reliable as hell 4k dollar motor. unreal deal

 

i know aes does some nice work. i will look into them as well

 

I would choose a shop that you are in driving distance of .I choose LME to build my solid roller lsx 427 because they were in driving distance and i could talk to them face to face.I was very impressed with LME service and the things they did to ensure my engine was put together in a correct way.

 

there arnt any within driving for me. other then big als engines but those are supercharged. and non ls engines

 

[QUOTE=bikerman9967;16987777]there arnt any within driving for me. other then big als engines but those are supercharged. and

Word of advise make sure you are there on start up and let them break the engine in on dyno .. You are about to spend alot of money and piece of mind knowing that the engine has no blow by and great oil psi is great to see before you pick up your engine. LME waited until I got to there shop and then they started to proceed to prime and start engine. They made several pulls on dyno and I was extreamely happy on what the engine made but I was looking at oil pressure and blow by.

 

ya. i may not be able to do that do to work . ill have to trust the builder i guess.

 

[QUOTE=bikerman9967;16987953]ya. i may not be able to do that do to work . ill have to trust the builder


I understand I trusted a big named builder also and 500 miles later I had spun main bearings on a 408 I had built a few years ago.

 

well aes has a pretty good name. anyone blow up something from them?

 

one guy barely bent a h beam rod at 1900rwhp and that was after several other runs, and a spark plug issue, as well as a block that was supposedly prepped from another place. its all he said she said though. cant really buy into it.....all i know is there are others running 1000+ rwhp with the motor and its still ticking....i mean stangkillr was running 900-1000rwhp on his stock lq9 so imagine what one built from a sponsor will put up with. 800rwhp is a tickle to that thing with a good tune.

 

I used a member on this board-saw one of his build threads and was really impressed with his attention to detail.

Tim Habel-goes by Helicoil here. I had a few phone conversations and emailed back and forth and I was sold.

Real happy with his work.

While there's nothing wrong with the shops mentioned. I got a different feeling dealing my guy-it wasn't assembly line, I wasn't talking to one person while another was building it.

 

well like i said.. this will never see the track. it wont be beat on. just want the huge hp for the cool factor. can you even drive 1000hp on the street without almost loosing it at every turn? gotta be like driving on ice.

 

I talked with AES and as easily as they could of taken my money and did what I wanted them to do, they didn't. They explained to me, what I wanted to do would work, but wouldn't be reliable and why it wouldn't be and I thanked them for that.

Even though I have a few places that are closer to build a motor for me, AES will get my business for just being on that phone and providing me with top notch customer service and they are 1200 miles away from me. One of the close places has built several 7 second turbo motors and is a 2 hour drive but he was going to just take my money and do what i wanted him to do and I would of **** a brick when my engine would of went bye bye.

IIRC they have 2 of their 410 cu in motors pushing past the 2000hp mark with no issues.