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gcarter
09-02-2011, 12:02 PM
Speaking about 454's, I saw this the other day and am wondering what block it is?
Can anyone explain the history of this engine?
.....Just curious.

http://www.gmperformanceparts.com/EngineShowcase/index.jsp?engId=LSX454&engine=LSX454&sku=19244611&engCat=lsx


67721

harbormaster
09-02-2011, 12:25 PM
George,

this is one of the New LS based crated engines from GM. We built a 630Hp engine with one of these style blocks last year. There companies that offer their version of this block in 502 cubic inches. I think these engines rock!

gcarter
09-02-2011, 03:30 PM
Thanks Scot.
It's a very attractive package.

yeller
09-02-2011, 03:41 PM
I saw that motor too George. Nice looking engine.

The LSX376 is supercharger friendly. I've always liked small blocks. Hmmm...I do need a new engine.

mrfixxall
09-02-2011, 07:48 PM
gm could have done better with this engine,,,,puke puke they used nodular iron crank (cast steel)and powder metal rods puke puke again...

gcarter
09-02-2011, 08:35 PM
Mike, you must be confusing it w/another engine as this is in the description in the URL I posted above;

"The LSX454 is filled with an all-forged, super-tough rotating assembly and features a pair of our new, deep-breathing LSX six-bolt cylinder heads. It also comes dressed with great-looking, all-new orange powder-coated valve covers with engraved "LSX4"54" logos





Part Number:


19244611










Engine Type:


LSX-Series Gen IV Small-Block V-8










Displacement (cu in):


454 cu in (7.4L)










Bore x Stroke (in):


4.185 x 4.125 (106.3 x 104.8 mm)










Block (P/N 19243172):


LSX cast-iron with 6-bolt, cross-bolted main caps










Crankshaft (P/N 19170391):


4340 forged steel with 8-bolt flange










Connecting Rods (P/N 19166964):


4340 forged steel










Pistons (P/N 19166958):


Forged aluminum










Camshaft Type (P/N 19166972):


Hydraulic roller










Valve Lift (in):


0.635" intake / 0.635" exhaust










Camshaft Duration (@.050 in):


236? intake / 246? exhaust










Cylinder Heads (P/N 19201806):


Aluminum LSX-LS7 port; with "as cast" 70cc chambers










Valve Size (in):


2.200 titanium intake/1.610 hollow, sodium-filled exhaust










Compression Ratio:


11.0:1










Rocker Arms (P/N 12579615 int):


Investment-cast, roll trunnion










Rocker Arms (P/N 12579617 exh):


Investment-cast, roll trunnion










Rocker Arm Ratio:


1.8:1










Recommended Fuel:


92 octane










Maximum Recommended RPM:


6,500










Reluctor Wheel:


58X










Balanced:


Internal

mrfixxall
09-02-2011, 08:48 PM
[ QUOTE=$originalposter]{$pagetext}[/QUOTE]

they may have changed the sped sheet with in the last 1/2 hour :kingme:

i must have clicked the engine..

gcarter
09-03-2011, 08:13 AM
Digging a little deeper, it seems to be maybe 115# lighter than a BBC, has aluminum heads, and I suppose that stock 6.2 LS exhaust would fit.

handfulz28
09-03-2011, 11:29 AM
RE: exhaust - George, are you talking street or marine? There are only a couple marine exhaust manufacturers that have built a LSx exhaust. As for street applications then yes, all the LSx exhaust applications should fit.

gcarter
09-03-2011, 12:23 PM
I meant marine.....
I'm curius about the application of this package.
Not that I could afford one.
Does anyone know who has built an exhaust for it?
Is the archetecture the same as the other LS engines?

BUIZILLA
09-03-2011, 12:31 PM
I have a close friend that put two LS engines in a Pachanga repower.... there is an exhaust for it... the boat was stolen and stripped before he even splashed it the first time,, very impressive package but the peak torq range is a tad higher than an Alpha drive would like