I bought my L98 formula some time ago and have been doing little things to it here and there. I've been recording everything with a g-tech since the nearest 1/4 is nearly 2 hrs away and I don't want to waste my time going there until I'm solid into the 13s. I do it on the exact same stretch of road every time so it is a decent measure of progression I figure. At any rate I ran it one last time before winter mods start. I'll recap first.
Stock 14.7 @ 98
slp headers/ypipe
dynomax catback
14.3 @ 103
slpCAI/pulley
14.15 @104
tranny rebuild,transgo
vigilante (tonight)
13.95 @105

It is getting kind of cold so traction was a problem with the vigilante. I have BFG drag radials in the garage for the track next spring. At any rate, based on what my IROC used to run at the track compared to this gtech, I figure I'm right around 14 flat and 100-102.

 

Is there a question here?? What did your IROC-Z used to run??

 

No question, just an update

My IROC used to trap at ~ 106/7mph