12-20-2013, 06:03 PM | #1 |
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Can Z28 be Supercharged
I have heard a lot of times that an Ls7 / 7.0 motor cant be or its not good to put a supercharger or procharged due to the motor been a high compression motor.
Is this true!! But I do see supercharger kits for the Z06 vett.
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12-20-2013, 06:08 PM | #2 |
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I would say the production LS7 is not well suited for a blower. The high compression means you can't run much boost without worrying about detonation. Sure you might be able to supercharge it and it might run well...for a short while before something breaks. So if you want a production LS7 to last...supercharging is probably not your best route to go.
Now if you build the motor appropriately and change out the pistons for lower compression pistons and swap a cam in that is better suited for a blower then the engine would likely live much longer. I'm sure there are other parts that should be changed out for a blower application but I'm not up to speed on what those parts would be. I'm sure the Z06 corvette supercharger kits are only running somewhere between 5-8 psi.
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12-20-2013, 06:16 PM | #3 |
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But when changedd to lower compression. Will the LS7 motor loose the horse power and then gain it back with the blower!!!.
I am really interested on a Z28 but I dont want to feel like I am down grading on horse power. I am used to lots of power. I know if I want another supercharged camaro why not get a Zl1,. Just the fact that the Z28 WILL BE limited production and its has lots of race components it makes it a nice car to collect.
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12-20-2013, 06:28 PM | #4 |
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There's a reason the LS7 is crafted with hypereutectic pistons: to discourage nitrous and forced induction. Why? Thinner cylinder walls, due to it's larger bore, than the LS3.
Edelbrock's E-Force LS7 blower, a low-pressure system, seems to work well for street use. Turn up the wick, boost-wise, with another system and mayhem may ensue without a VERY precise tune and forged pistons. Want 7.0L AND BIG boost? Try the C5R block, or shop the aftermarket. Want BIG power from an LS7, on a budget? Naturally aspirated, the engine is well-capable of beyond 600 hp...for le$$ than the price of a blower kit - installed. |
12-20-2013, 06:51 PM | #5 | |
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Quote:
But I guess that's the great thing about this county is if you want it you can get. That's your choice and preference in the end.
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12-20-2013, 06:56 PM | #6 |
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Can it be? Sure.
Should it be? No and for multiple reasons. |
12-20-2013, 07:32 PM | #7 |
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I guess bottom line the Z28 should be left naturally aspired ...... it would be nice to see one supercharged. ...
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12-20-2013, 07:54 PM | #8 |
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12-20-2013, 09:43 PM | #9 |
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Yah...I would leave a ls7 NA...with a bottle of course for those need to shred moments.
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12-20-2013, 10:12 PM | #10 |
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This is my favorite of all time Z06 that's been given the Lingenfelter treatment, it belongs to a guy who did go by Grasshopper 106 on YouTube but his account has been closed. It is naturally aspirated with the 660 horsepower.
This (as my brother-inlaw likes to say) is what a grown man sounds like, Enjoy! http://youtu.be/flUFM3LXjno http://youtu.be/1uGpzMgFUUg http://youtu.be/47g2_9WxrYM http://youtu.be/HRImIsfe26g
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Last edited by RLHMARINES; 12-20-2013 at 10:47 PM. |
12-20-2013, 10:16 PM | #11 |
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You can boost a LS7 and making 600whp even 700whp is not out of the question.
Some say you will need pistons, others will claim the sleeves will go first. You have to ask yourself what DO YOU want to do with the car? If you are going to go nuts building some 1000whp Z/28 you will be much better off starting out with the LS3 or LSA over the LS7. Hell - cam only LS7s are making 550ish whp!!!! That is a lot of car on the street to note - the hypercraptastic pistons with the proper tune have been over 700whp on boost. A guy over in the corvette forums swapped pistons and hit his Z06 with a 200hp shot of juice and ran high 8s The LS7 is a fine piece of machinery. |
12-21-2013, 10:26 AM | #12 | |
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Quote:
The problem is less the compression ratio (which isn't that high for a naturally aspirated engine) is that when you take a block with 4.4" bore centre, and then make a bunch of 4.125" holes in it (well, actually larger with the liners) you don't have a whole lot of material left over between adjacent cylinders. Thats the main reason why GM based the LSA & LS9 off of the 6.2L LS3 instead of the larger LS7. Can you supercharge is? Sure. Will it self destruct the instant you start it after installing the blower? Probably not. But if big power is your goal, you can go a long ways while staying naturally aspirated that put less stress on the engine. Side benefit: staying naturally aspirated keeps the weight down.
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12-21-2013, 10:56 AM | #13 |
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x2 I rather keep it NA, if you want boost get a ZL1
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12-21-2013, 11:09 AM | #14 |
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To each his own, but I'd never supercharge a Z/28. Mainly because I want the car for track-day usage, and heat is the enemy in that use scenario. I also prefer the sound of the non-blown engine.
To extract more output from the Z/28, I'd suggest a visit to THESE GUYS: GEN 5 CAMARO Z28 2014- CAMARO Z28 LS7 Stage 1 600hp* 565ft-lbs Katech Torquer LS7 camshaft C5-R timing chain High lift valve springs Katech titanium ultra-light retainers Wideband O2 bung Chassis dyno tuning Serialized plaque Price: Call Stage 2 620hp* 580ft-lbs Katech Torquer LS7 camshaft C5-R timing chain High lift valve springs Katech titanium ultra-light retainers CNC-ported heads FAST LSXR 102mm intake manifold Fuel rail/installation kit Wideband O2 bung Chassis dyno tuning Serialized plaque Price: Call Street Attack Camaro Z/28 Katech Street Attack LS7 package Bore: 4.125” Stroke: 4.000” Displacement: 427ci/7.0L Horsepower: 630 Torque: 565 Redline: 7000RPM CR: 11.4:1 Block: LS7 aluminum, billet main caps Crankshaft: 4140 forged steel Connecting rods: Powdered metal titanium, rebushed with bronze bushing Pistons: 2618 or 4032 forged aluminum Camshaft: Torquer LS7 110 or 116LA, high speed lifters, C5-R chain Cylinder heads: CNC-ported LS7 Valves: Titanium intake, hollow sodium filled exhaust Induction: FAST LSXR 102mm Oiling system: LS7 dry sump Katech billet belt tensioner Dewitts custom aluminum radiator Integrated oil-to-water oil cooler AN oil cooler lines Koolmat Tunnel heat shield Katech aluminum or carbon fiber valve covers Powdercoat or show prep paint (aluminum only) Katech Performance engraved insert (aluminum only) Katech coil relocation kit Paint-to-match intake manifold ARE Stage 1, 2, or 3 dry sump system FAST LSXR 102mm intake manifold Track Attack Camaro Z/28 For off-road race vehicles or export outside of the United States only Katech Track Attack LS7 package Bore: 4.125” Stroke: 4.000” Displacement: 427ci/7.0L Horsepower: 650 Torque: 570 Redline: 7000RPM CR: 12.0-14.0:1 Block: RHS aluminum with billet main caps, ARP studs, piston squirters Crankshaft: 4340 forged steel with ATI damper Connecting rods: Forged H-beam steel Pistons: 2618 forged aluminum with DLC-coated pins Camshaft: GM Stage 3 Cylinder heads: CNC-ported LS7 with bronze valve guides, ARP studs Valves: LS7 titanium intake, hollow sodium-filled exhaust Induction: FAST LSXR 102mm Oiling system: ARE Stage 3 with Katech HCS/HCP (red) pump Katech billet belt tensioner Dewitts custom aluminum radiator Integrated oil-to-water oil cooler AN oil cooler lines Katech aluminum or carbon fiber valve covers Powdercoat or show prep paint (aluminum only) Katech Performance engraved insert (aluminum only) Katech coil relocation kit Paint-to-match intake manifold ARE Stage 1, 2, or 3 dry sump system, or Dailey 5 stage FAST LSXR 102mm intake manifold *assuming intake/exhaust already equipped
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