Want to engine swap. LS7 or LSX better option?

[ls7camaro]

i am looking to get about 850rwhp out of my 2010 camaro. I want to install either a kenne bell or a techco supercharger to the engine, but i am not sure what engine i should go with. The ls7 is more power, but thinner walls, and the lsx can handle a ton of hp, but is heavy. I would like to set the s/c to about 12-15 psi, so thats why i think the ls7 is out of the picture. Whatever i go with, i am going to rebuild the internals, new cam, etc. Just wondering if you guys could help, and tell me what the added weight of the lsx would really do to the car, thanks

[Gary B]

I'd look into a built LSX engine with a Vortech system set to fill your needs. You seems to want major hp from a S/C combo, so that why I say Vortech or ProCharger. MANY racing applications capable of running big boost. Personally, if money isn't really a question, I'd go with a custom turbo unit.

[CamaroSpike23]

lsx. the added weight is not that much to worry about. esp when you are pushing those kind of numbers. build you a forged 454 lsx and toss on a TVS2300 blower and call it a day

[ls7camaro]

yea turbos and this car i feel just dont go too well together, yea i want something that is really dependable, thats why im probably going to get the lsx

[Indpowr]

I would look into a C5R 427 block will fully forged internals i.e. Callies

You will NOT find a stronger block. Be prepared to spend a lot of mine.

[ls7camaro]

but would the twin screws that fit on the ls3 or ls7 fit on the c5r?

[Z_Rocks]

From what I read before [not claiming any experience], the C5R 427 is a great N/A engine for road racing, but the LSX or World engine has more tolerance and stronger walls for boost. I think LSX is more reliable in long run that LS7.

As far as turbo goes, the engine bay seems too small for all those tubes and stuff. Techo makes a nice addition to that LSX.

I've been thinking of the same thing except with less power, by swapping the LS3 engine with a LS9 from GM. What I like to know, what do I do with my brand new LS3 engine? Do I sell it? How much will I get for it?

[update] This article is a good article on LSX and it's comparison to C5-R:
http://www.vetteweb.com/tech/vemp_08...ine/index.html

[Epitaph]

Question 1: Why do you want a car with this much HP?

Question 2: Have you driven a car with more than 300HP? 400HP? 600HP? 800HP?

Question 3: Is this car going to be driven on the street?

Question 4: Is this car going to be raced on the street?

Question 5: Have you ever raced a car at the track?

[speedster]

Looks like a direct duplicate from here:

http://www.camaro5.com/forums/showth...?t=2933&page=5

For the record, the LSX block adds approximately 100 pounds.

Last time we were in CA at an engine shop, the owner had me lift an aluminum block and then the LSX. Yeah, it's definitely heavier.

As a rough guideline, every 100 lb change is worth 1/10 second difference in a quarter mile ET (note that this is a ROUGH guideline and is influenced by just about everything)

It's nice to window shop, but as per Epitath above, you need to figure out what you want it for.

Enjoy. Hey it's cool that you want to modify it...

[SS 376]

Originally Posted by Epitath

Question 1: Why do you want a car with this much HP?

Question 2: Have you driven a car with more than 300HP? 400HP? 600HP? 800HP?

Question 3: Is this car going to be driven on the street?

Question 4: Is this car going to be raced on the street?

Question 5: Have you ever raced a car at the track?

These are all good questions. I'd also ask what your budget is.

[Epitaph]

And that's just the start.

You're going to need to upgrade QUITE a few other things, will the drive shaft take that much HP and Tq? What about the rear end? How about rear tires, they aren't going to stick. Transmission?

This isn't a "swap the engine" deal, this is a:
Swap engine, transmission, drive shaft, rear end, brakes, rims, tires, etc...And it's not a "swap". If you want to go 200MPH, you're better off buying a white camaro and going from there. Save yourself a lot of time! Hell, you're probably better off buying the Zr1, if you're going to race on the street, you don't need to worry about payments, you need to worry about your life and every1 else along with it.

[ls7camaro]

i have decided to not have as much power maybe 700rwhp max, but was wondering what is really streetable, could the ls3 with built internals handle 10 or 12 psi for a long term engine life, or should i just go with a 376 or 427 lsx

[ZZcamaro]

When you start throwing that much boost at an engine, the world long-term should not be in the same category. Yes, they will last, and if built properly they will be able to be driven alot and driven hard....But you do not build that much power and expect it to last 100k miles without issues. Even 700RWHP is over 800HP on the flywheel.

If it was strictly a drag car you could build it too get traction, btu then you would be blowing drivetrain parts all the time. As a street car you are not going to get enough traction to enjoy all the HP.

That being said, I build my cars for approx 600RWHP, and when done they are great street drivers, and they can still run into the 10s on the drag strip. That is all I need.

That is just my two cents.

[ls7camaro]

so my best bet for like 650rwhp would be the lsx 376?