I am running the 30 series that came with the American thunder kit on a small block 350.
Brian Zack '70 Chevelle Malibu mailto:[EMAIL PROTECTED] -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Monday, February 23, 2004 5:01 PM To: The Chevelle Mailing List Subject: RE: [Chevelle-list] x-pipe vs h-pipe I was told, by flowmaster, that the 40-series mufflers were not recommended for big blocks because the tend to pop. Are you running 40s on a big block? Rich -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Brian Zack Sent: Monday, February 23, 2004 5:22 PM To: The Chevelle Mailing List Subject: RE: [Chevelle-list] x-pipe vs h-pipe ...pinging popping sound that he had before So, is that what it is that I'm hearing out of my American Thunder 2 1/2" Flowmaster system w/ the H-pipe? I was trying to figure out if I was having detonation. Brian Zack '70 Chevelle Malibu mailto:[EMAIL PROTECTED] -----Original Message----- From: Danny Wilsher [mailto:[EMAIL PROTECTED] Sent: Monday, February 23, 2004 3:31 PM To: The Chevelle Mailing List Subject: [Chevelle-list] x-pipe vs h-pipe Just a comment on the H-pipe vs. the X-pipe. My brother has a 2004 Z06 vette and he had 3 dyno pulls done on it and then with out taking it off the rack, they put an X-pipe on it and it and did 3 more pulls. It gained 8 hp and the sound is totally different. Much deeper and more macho sounding than the pinging popping sound that he had before. The factory H-pipe definitely needs replaced on the Z06 in my opinion. And I couldn't tell you where he bought the X-pipe but if some one wants to know I could ask him. ����� .............. Wilsher Motor Sports ----- Original Message ----- From: "Shawn Price" <[EMAIL PROTECTED]> To: "The Chevelle Mailing List" <[EMAIL PROTECTED]> Sent: Monday, February 23, 2004 11:49 AM Subject: Re: [Chevelle-list] 3" Exhaust on '65 Malibu SS : I think you mean 'Mr Gas'. They make a cool 'X' pipe kit that was all : the rage for a while... not sure who to believe regarding the 'H' pipe : vs. the 'X' pipe.
