New PHR, 454 LSX, and anger issues?

**BOWTIE6872** · February 19, 2009, 11:14 PM

Re: New PHR, 454 LSX, and anger issues?

your out of line..
a few things..
trucks heavy and a brick in the wind..
a t/a is lite, and aero
and in this case the cubes.. alow alow a lot less pedal to move out..
the truck has to get great mpg and pass emissions,
trucks are also use'n a bigger, power robbing drivetrain..
the 2002 ls t/a engine isn't a lot different from the 5.3 truck..
one gets 26+ and 330hp
and one get 19mpg .. and is a smaller engine..
it's the otherstuff outside the engine..
put that lsx in a truck.. and watch the mpg go down

**BOWTIE6872** · February 19, 2009, 11:16 PM

Re: New PHR, 454 LSX, and anger issues?

having said that
I want one for my '86 montySS

**N20Silverado** · February 20, 2009, 02:12 AM

Re: New PHR, 454 LSX, and anger issues?

how much $$$$$$$$$$ for the 454

What heads?

**BOWTIE6872** · February 20, 2009, 05:09 AM

Re: New PHR, 454 LSX, and anger issues?

head #19201806

ls7 port with 70cc chamber

pace price.. please call

**BOWTIE6872** · February 20, 2009, 05:11 AM

Re: New PHR, 454 LSX, and anger issues?

19170112 - GMPP LSX454 620 HP Crate Engine 19170112

Call For Price

Detailed Description
LSX 454 Crate Engine

An engine with 454 cubic inches will always be assosiated with higher performance Chvys, and that tradition continues with the all new LSX454 crate engine. We started with the new LSX bowtie block, stuffed it with an all-forged, super tough rotating assembly, bolted on a pair of our new deep breathing LSX six-bolt cylinder heads and topped of the combination with a high rise intake & four barrel induction system.

The new LSX six bolt cylinder heads are based on the race-derived LS7 heads that help deliver more than 500 horsepower in the Corvette Z06. They enable tremendous low end torque and great high RPm power. The LSX 454 is delivered in deluxe form, so you get everything from the carburetor to the water pump (oil pan not included). It also comes dressed with great looking, all new orange powder-coated valve covers with 'LSX 454" logos engraved and painted in black.

Note:

Oil pan and oil pump pickup are not included. LSX valve covers do not have coil mount provisions, coils will need to be relocated

LSX454 Specifications

Engine type - LSX series Gen IV small block V8
Displacement - 454 CID (7.4L)
Bore & Stroke - 4.185" X 4.125" (106.3mm X 104.8mm)
Block - 19243172 LSX cast iron block with cross bolted 6 bolt main caps
Crankshaft - 19170391 Forged steel
Pistons - 19166958 Forged aluminum
Camshaft - Hydraulic roller - .635" / .635", 236 / 246 duration @ .050"
Cylinder heads - 19201806 Aluminum LSX- LS7 port with 70cc chambers
Valve size - 2.20" titanium intake, 1.61" exhaust
Compression ratio - 11.0:1
Rocker arms - 1.8:1 aluminum roller trunion
Reccomended fuel - 92 octane
Reluctor wheel - 58X

**AFFORDILLAC** · February 20, 2009, 05:58 AM

Re: New PHR, 454 LSX, and anger issues?

How come cars of the '40's 50's got 25/30 mpg?

**milner351** · February 20, 2009, 06:02 AM

Re: New PHR, 454 LSX, and anger issues?

Calibrating for emissions is a tightrope walk.

It's easy to calibrate for fuel economy when emissions are not an issue.

The problem is that HC and NOx are both regulated - and are opposites - when you run close to stoich thanks to the O2 sensors - life is good - but as you start to go lean (remember the lean burn chryslers?) NOX goes up like crazy - and you fail the emissions test. When you go Rich - HC goes up - NOX goes down.