How much h.p. do you think you'll get if you extrude honed the stock exhaust manifolds? 
again just out of curiosity.
again just out of curiosity.
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2006 Saturn Ion Redline
2003 Mits. Eclipse Spyder -
I've seen a few guys extrude hone their stock exhaust manifolds on their Vortec 5700 motors....very close to the same motor as the LT1.Originally posted by ryan34How much h.p. do you think you'll get if you extrude honed the stock exhaust manifolds?
again just out of curiosity.
I think Clint got like 7 RWHP and that other guy got around the same....7-8 RWHP.
The answer to your question is....not much, buy headers.
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I had SLP extrude honed manifolds before I installed headers. They were worth 10 HP.
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7 hp huh.....why couldn't they do that in the factory? 282 hp sounds hella better then 275
2006 Saturn Ion Redline
2003 Mits. Eclipse SpyderComment
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Cost of production and emissions.Originally posted by ryan347 hp huh.....why couldn't they do that in the factory? 282 hp sounds hella better then 275
That just another reason why the C6Z is so bad ass. It says to hell with what everyone else is doing!
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