Easy 44 HP

[Keith Tedford]

If they aren't frudging the numbers, this is quite an improvement for relatively minor change. No wonder customers are so happy when they leave Manny's shop. You will definitely feel 44 extra hp.
Justin Abbott: Modifying a New GS – LS is the Best Chevy V8, Period - CorvetteOnline

 

[buckhorn76]

wonder what effect the addition of an "x" pipe would have ?

 

[LSXtasy]

I didn't notice much difference with mine. It got rid a bit of the off throttle "gurgle" that the factory H-pipe had. I noticed more with my Vararam. Do a header with x-pipe combo to really get your monies worth.

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[Keith Tedford]

Our 396 Chevelle had an "H" pipe for a while but I didn't notice any difference other than the sound was a little more mellow.

 

[Riley P]

That is quite a bit of power! Over 10% increase!? Isn't that starting to creep up to Z06 power levels?