What makes the LS6 pump out so much more power than the LS1 if they are both 346 c.i.? I'm a noob so I'm not sure I have this right but I think the LS6 stock H/C help it male more power, and the stock exhaust might be less restrictive.

So, if that's right will a LS6 H/C LS1 with bolt ons make similar or even more power than an LS6??

 

Yes, and yes.

 

http://www.idavette.net/hib/ls6/page2.htm
http://www.idavette.net/hib/02ls6/index.htm

 

Good info jrp.