My dad's '64 Riviera does 1.65 60' times pulling the wheels a few inches off of the ground using a 4000 high stall switch pitch and my '70 Skylark has done a best of 1.65 so far using a PAE 5000 switch pitch converter. He has been running a 100 shot of nitrous right on the launch for years in a full weight Riv running 12.80's. I don't have alot of runs on mine yet, still tuning and dialing it in but the car runs 11.3 at 119mph and drives on the street just fine. I'm using a PAE switch pitch timer that is hooked up thru the brake light switch and it switches it to high stall when I hit the brakes. When I let off of the brakes it starts the timer then switches back to low stall. Ken
Thanks Ken for the reply! What do both converters foot brake too?? Or are you guys running a trans brake?? I think I am going to go this route for sure just like getting as much info as possible. Thanks Ron
Neither of us use a transbrake. I'm not sure about my dad's converter but mine will foot stall at about 3200 or so in high stall. I always flash the converter from about 2000rpm's at the track and I think the high stall is around 4200rpm's. Ken
We used to run a switch pitch (KB converter, 2000/3000), stock appearing car (no headers, stock intake, QJ), 3.73 gear, 27" tire, 1.590" was the best 60' (US41 Dragway), car weight was just under 3900 lbs with driver. HTH
That sounds like you had it running great. Mine should be doing that now but I have a new carb on it I have to tune. It's just the way it came out of the box right now. I plan on going to the track Friday and making some jetting changes, it's lean at the start right now. Ken
