Dyno results and damage report for the 67 Supercharged 331

I went in for a tune yesterday and on the first run I made 483 HP and 509 TQ. After throwing in some more fuel and about 5 runs into the tune I made 536 HP and 525 TQ. At the end of that run I popped out a freeze plug and had to cut the day short. We never even got to tune any timing. I had the base timing set at 10 degrees and heard no detonation at all. I have a 6.87" crank pulley and a 3" supercharger pulley and it was making about 14 psi. Today I am going to install a new freeze plug. Not too bad of a job, I had to pull the header and steering rack to get to it.

Now I am looking for a larger pulley to keep the power down around 500 HP. I figured a 3.12" or 3.15" should work if anyone has one to sell, let me know. DCStang67@aol.com

thats exactly what I am going for. It made that power at 5000 rpm and then started to drop, so there is no need to rev it up over 6000.

It wont go back on the dyno until I get a bigger pulley. I am shooting to tune it right in around 500HP. I am running an 8 rib pulley