I have the stock LS1 intake manifold with the EGR free mod done......will the LS6 intake manifold give me a noticable gain over stock?

 

High Performance Intake Manfiold

The high performance LS-6 Intake Manifold is now available from SLP featuring an EGR modification which enables the use of the vehicles stock EGR system. The new intake's increased plenum volume and massaged runner design results in an impressive gain of up to 15 hp at the rear wheels providing improved 0-60 and ¼ mile acceleration. After installation, the new LS-6 intake manifold looks nearly indistinguishable from the original LS-1 intake manifold making it a direct bolt-on replacement. This manifold package includes all necessary parts, hardware, detailed instructions.

 

Yes,estimates are around 10-15 hp over the stock intake.The difference is on the air passages.I believe they are larger and smoother.The cool thing is that the LS6 intake looks just like the LS1 intake so it's great to use when making a sleeper.Good luck.
Kevin

Edit: Hehe,I see someone else just answered your question as well. At the exact same time I did

 

How much can I plan on sinking into an LS6 intake manifold? I am assuming I could install it since I redid the intake seal on my LT1 by myself.

 

$495 from SLP.