Originally Posted by c5_ls1_6spd

I was told there wasn't much of a difference (+/- 3rwhp) going from 2.5in to 3in piping on a H/C 346 car. Now on a stroker car, there was a significant difference (15-20rwhp).

Originally Posted by Jimbo'sZO6

As some of you know, I have been getting the car ready for a "heart transplant", and the 1st step is finally complete. Here are a few pics of the completed 3" system using 1-7/8" ARH race headers with their 3" off road merge modified to accept 3" I.D. "Powerstick" chambered mufflers from Classic Chambered Exhaust and full 3" over-axle rear section custom built by my good friend Mark Smith of IAC Performance here in CO. As far as I know, no one has done this on a C5 yet, so let me know what ya'all think. Here's the pics and a couple short vid clips:















Here's a few vids:
http://s17.photobucket.com/albums/b7...pJimbosZ06.flv

http://s17.photobucket.com/albums/b7...-awayvideo.flv

http://s17.photobucket.com/albums/b7...carvidclip.flv

Now that the rear section is done, the sound inside the car is no louder than the Corsa Ti's were, just much deeper in tone. I am very pleased with the results!

Jimbo
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Originally Posted by allngn_c5

The test car they used was a c5z with lg pros, and g5x3 cam. It picked up quite a bit more then 3 rwhp over the Ti system. It even managed to pick up 7.x rwhp 7.x rwtq over the bullets. I currently have the bullets and Louis at LGM is swapping the big3 for my bullets to see how she does. The only thing is that I am upgrading to a 402 so it won't be a true comparison of a c5 346 ci h/c car bullets vs big 3. It will be a baselined 402 h/c with bullets vs big 3. My car was going to be the 346 ci h/c test mule to see how much more if any the big 3 would make vs the bullets, since they already had a cam only comparison.