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High Compression + Boost?

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Old Sep 3, 2012 | 12:33 PM
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Question High Compression + Boost?

I've got the itch to go faster, and boost is looking mighty attractive.

My current setup is a 346ci LS6 with H/C/I, 11.0:1CR and puts down about 480rwhp.

I'm contemplating a running a supercharger on about 4-5psi and spraying (a lot of) meth. That should put in the 600rwhp ballpark.

The big question is, how safe is this? How many people have done similar setups successfully (and unsuccessfully)? Am I overlooking something big here?
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Old Sep 3, 2012 | 01:21 PM
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Isnt that stock compression of an LS7? They safely run 7-8 PSI and meth would only help..
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Old Sep 3, 2012 | 01:53 PM
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https://ls1tech.com/forums/forced-in...ion-turbo.html

https://ls1tech.com/forums/forced-in...mpression.html

https://ls1tech.com/forums/forced-in...mpression.html

Search gives a lot of good info if you want to learn something. Plenty of examples on this board of people running more boost without the meth.

Last edited by Ironmancan; Sep 3, 2012 at 01:59 PM.
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Old Sep 3, 2012 | 02:25 PM
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Originally Posted by mac62989
Isnt that stock compression of an LS7? They safely run 7-8 PSI and meth would only help..
Yes it is, but cast pistons in the C6 Z06 along with that amount of boost and their thin cylinder liners just isn't really a great recipe for boost, people do it though of course.

It will work, just be very conservative with the timing advance in your tune along with fuel. If you ever want to run it hard, I'd honestly throw a gallon or two of 110 or AV gas to get the octane up. It will only help your cause and prevent a potential worst case scenario.

The camshaft you use or use now will also play a big factor in what your dynamic compression is. Your static compression really is nothing more than a figure for volume where as dynamic is real time what your motor is pumping while the engine is running.
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