In a 08 vette I currently have a gmpp lsx 454 crate motor. with a stock ls7 intake manifold with a stock ls3 throttle body. Running through 1 7/8 headers with 3"xpipe down too 2.5" axle backs. I want too run stock mufflers, is this a problem with makeing power? Also, how good are the lsx heads? do they flowbetter then a stock ls7 head?

i want too make a big power N/A sleeper...
please, tips or improvements needed too make that horse power stuff.

 

bump.. really want too know who can port my heads in south florida?
would it be cheaper too buy new ones and sell mine?
and how much horse can i expect from properly matched heads, cams, cubic"(454), and compression (11 to 1).

 

Sending out your heads to a vendor who has a proven track record with solid results is probably the best way to go. Finding someone local may not be the right answer as they may not be comfortable nor experienced porting LSX heads. Companies like Livernois, Advanced Induction, Tesax Speed, TEA, Patriot have a good reputation for ported LS series heads.

Give each of them a call to get real world data or check out their websites. You may also want to call some local Vette specialists to see what they recommend. Some that come to mind are Horsepower Sales, Breathless Performance, Redline Motorsports and Monster Motorsports.

 

We actually had the first four LSX 454 offs GM's line back when they came out and where the first ones to stuff it in a Camaro. Since then we have used that motor in Corvettes and built a few 454 pickups to commemorate the SS454 pickup from the 90's.

The engine is quite punchy as is. It idles with about 74 KPA of pressure and is a bit sensitive below 1800 rpms. A few of the Camaros we built we actually cut a new camshaft that picked up over 38 HP and 40 ft/lbs below 4500 rpms and gave up 20. Much better drivers.

That engines biggest issue is the "as cast" cylinder heads. A factory ZO6 comes with CNC'ed ports and these are just raw. Cylinder head porting is dire in that engine as its got alot of displacement and choked heads! We have a great port program with out machinest for that engine.

The stock intake is also hurting that engine and you will pickup nicely with a LSX 102mm.

We built a 2011 for GM Performance in 2011 with that engine with the toned down camshaft. GM didn't want the aftermarket intake so we built it with a stocker for its debut at the PRI show. Once the show was over we swapped to the LSX and picked up quite a bit.

GM knows the engine is piggy down below but corporate demanded an engine north of 600 crank....they didn't care about how it idled as there market was the guy with the 69 Chevelle.

Its also a very loud engine so the mufflers should be thought about properly!

Here is the info on the Camaro.

http://www.redline-motorsports.net/2...play-pri-2010/

Please let us know if we can be off assistance as we know that powerplant well.

Howard

 

Hit me up via e mail at howard@redline-motorsports.net if you want to discuss further until Monday!

Thanks

HT

 

Thanks for chiming in Howard!

Z06SlapMopar, Howard's (Redline Motorsports) shop is top notch! You can eat off the floors. He does very high end builds, several have been featured in magazines. Give him a call and speak to Howard or Jay, they will give you a true idea of the potential that motor has.

 

The LSX 454 is a great engine. We have one in our 2010 Camaro SS. The car is an auto and we were looking at doing a package for customers that want to make quite a bit more power over stock yet have a car that sounds and drives like stock. We replaced the camshaft with our 1C "stealth" cam and installed the engine with stock catalytic converters in place. The gains were very good and the car sounds and drives like a stock Camaro (with a lot more power/torque).

Below is the graph showing the stock baseline vs. the LSX 454 with our 1C cam, CAI, shorty headers and stock cats.







Most people would look and think it was a stock engine with a CAI



The heads could definitely benefit from porting and we do have a CNC program for them.

Thank you

Regards,

Rick LeBlanc
Livernois Motorsports

 

Thankyou Rick, I'm very interested in your headporting program. Am i looking for what they call a 5 axis port (guessing shave the internals from 5 angles?) Is this what you are offering?

Also do you have any cams that drive like crap but hall-***.
i would like make roughly 600rwhp if possable?

or is it possable to put this motor on boost?

 

Thank you for your interest! It would consist of a 5-axis CNC port and valve job. Would you be sending the heads bare/clean or fully assembled? Please send me a pm with your fist and last name and email address and I can email you a quote.

The compression is high for boost, but 600 RWHP N/A shouldn't be an issue. Is the car an auto or manual? We make 600+ RWHP with head/cam bolt on stock bottom end Z06's, so with the added displacement of this engine, ported heads and a large cam it should be no problem.

Thank you,

Rick

 

The baseline dyno - roughly 330/334... That's a baseline LS3 in a Camaro? Is that an auto or manual? I thought the base LS3 made about 375 rwhp auto and 385 manual.

 

Our car is an Auto, and it has an L99 in it, not an ls3 from the factory. Typical baseline's on the L99 Camaro is 325-345.

 

Do you happen to know what would be need to be upgraded set this motor up for boost?
(just pistons?)
And what the rewards would be?

 

You could change the pistons to lower compression, but we wouldn't want to run boost with that stroke length.

 

So would you want a shorter rod? and would this create a stroker effect resulting in more cubes?

and do you think it will reach 700rwhp @ 6Lbs

 

I apologize, I misspoke and put rod length, when I meant stroke. I personally feel that the 454 is a combination for NA power only, and anything beyond that is use at your own risk. I would stick with a 427 engine build if I were going power adder at all.

 

Call jeremy at horsepower sales in pompano, he know's what he's doing.

 

Agreed. He and his crew have built some impressive machines. He has tuned both of my motors and I can't complain - he treats you like family in his shop.

(954) 984-8040

1490 S. Dixie Hwy East
Pompano Beach‎ FL‎ 33060
United States

 

Thank You Gents.

You are very kind. We appreiciate you as well.

Well, we certainly are in esteemed LSx company here within this thread, along with Rick of Livernois, and Howard at Redline. Top notch.

Great advice from all Nick, and we also will throw our hat in the ring again.

As we remember it, no addl. expenditure was available at the time to work on your existing Cylinder Heads.

Please call me, and then come on by for a one on one with Jeremy, for
Headwork, and power output idea's on your 454 LSx.

We have the experience to make you happy, and the service and outcome to continually earn your business.
We'll have a good thought for you and Dad. You are Great Guys and Customers.
Rick @ HPS of Pompano, Fla.

 

nick i have no coment lol.i would pull the heads send them to ts mill them ,change cam ,fast 102 and tb ,retune hand hold on .lol.first thing you need to do is find the combo you want and run with it.listen to your daddy lol.

 

I'll see you guys when i'm back from vacation. I have all the breakin miles done and ready, I come back on tuesday. Thanks again guys