Originally Posted by ArklaTexan

Put on Some MT Drag radials and you will be there. My 04 GTO put down 1.73 60' with MT Drag Radials. Would be lower with Streets or slicks though.

Originally Posted by chrisok1

Because it is $1000 for 10 hp peak over an ls6 intake on a stock displacement motor. For me, that is not good value. Also, typically you will gain peak power but lose a little power down low on a 346 inch motor. On a bigger motor, or a motor that is a pure race motor, you bet it is worth every penny. That is just my opinion. I will definitely get one for my next motor (which will be 400+ inches). I think HOT ROD actually tested the 90/90 set up a couple of years ago.