Here is what my friend posted at ls1tech.com if you dont believe me but this is how it went down between me and an LS1. It really is a drivers race. Welp, I finally got that race in that I was talking about a while ago. Interesting story leads up to it though. I am at home seafoaming my car (thanks ChocoTaco!). When my friend pulls up in his 03 Mach 1. He decides to stick around and help me a bit with the cleaning process. After we finish, we go out to take my car for its "spirited" run. The smoke was freaking awesome. So we take it down the interstate from one exit to the next, and I decide to let my friend drive my car for a little bit because he wanted to try out the ls1. Low and behold, as soon as he gets behind the wheel, a SN-95 Cobra pulls up (we are on a two lane highway leading back into our town). He looks over at me and ask me if I am cool with it. I give him the O.K., knowing that the first street race in my car isnt going to be done by me . Anyway, it pulls like a bat out of hell on the Cobra. I know it had at least exhaust, but I honestly feel like it could have been a GT, with a complete Cobra switch the way that my car pulled. After this, we are both a bit excited (giving all the praise to the seafoam). He decided that he wanted to see what the Mach 1 would do against the SS. After me riding in the passenger side of his car, him riding in mine, and him driving mine, we both felt that it would be extremely close. The Cars 1999 Camaro SS -Mods-Whisper Lid, K&N filter 2003 Mustang Mach 1 -Mods-Midpipe, Flowmaster Exhaust -Race 1- 10 MPH-Top of second He pulled about a half to 3/4's of a car on me out of the hole. We held steady right there until I went to shift into 3rd and missed. -Race 2- 45-top of fourth This race was as even as even can get. Seriously, until he missed 5th, there was no movement either way. -Race 3- 40-110 This race was also extremely close. He was at my door when we let off. -Summary When we pulled over to talk about the results, both of us were a little surprised. We both honestly thought the other one would pull. My honest observation is that the ls1 top end isnt significantly greater than the Mach's (at least at 110 or quartermile area), and the Mach 1's bottom end isnt that much greater than the SS. We are going to do this again later on this week, and I will have another story to tell. I am just sad that the first real kill in my car came without me behind the wheel............... Mach 1 vs. LS1=Driver's Race. Who would have thought it?