This puts the car well into the top 5 list for quickest all steel GTO's here in the states. In fact, were wooping on quite a few guys that have converted the cars over to a solid rear axle. I chose to keep this thing with the OEM IRS setup.
It's been a great deal of work sorting it out, but now that we're making progress it's very encouraging. The next plan is to turn it back up. There are 10lbs of boost left to throw at this thing, which will chew on the mph and the ET.
The smile on my face comes from the fact that there were numerous 4-link, fat tire cars there last Friday, and based on what they disclosed, our 60' times were within hundredths of theirs.
We killed a crankshaft a couple of weeks ago with this. The blower drive hub sheared the drift key and went bad afterward. The new crank arrived a week later, and I cut double keys in it. I had to order a new hub from ATI, which turned into its own shitshow as UPS let it sit in KY for two days. That resulted in a thrash fest Friday afternoon/evening I modeled up the old one quick in SW and ended up making it from a stick of 4130 prehard. We finally made it to the track by 7:30 and got some test passes.
Broaching the keyways.