I kinda found this forum by accident. I was actually doing a search for Predator Carburetors. I'm amazed to still see anyone saying anything negative about the Predator. I've known many people using them in the past 20+ years, and all have vowed to never go back to a Holley. We have a '70 Camaro that I've been 10.83 @ 125 MPH in... With a Predator. The car had a very mild 11:1 386 (destroked 400) with a .646" solid roller, Super Victor and a Predator. The first year we ran the car, we had 3 different Holleys on it. We tried a 950 HP, a BG 850 and a 750. I had some of the best carb guys around, working on these things. We did the whole Holley dance... Changed jets, power valves, pump cams, air bleeds, etc. The best I ever ran with the car was a 10.90. Most of the time, the junk Holleys would keep it in the 11.0 - 11.30 range. We literally pulled a Predator out of the box and bolted it on with a bellcrank to put the bowl at the front. My first pass on the car with the Predator was a 10.85. The Predator has 2 adjustments. No more power valves, jets, pump cams, etc. It stared better, idled better (with no idle circuit), had way better throttle response, and pulled harder than any of the paper weights Holley provided. It was also much happier at our 7600 RPM shift points. We ran the car for 3 years without ever touching the carburetor after that. After those 3 years, we swapped from the footbrake TH350 to a transbrake TH400 with a 2-step. We also went to a .705" roller and a tunnel ram and twin Predators. We made a couple chassis dyno pulls that showed we were lean. I called Predator, and they talked me through what to do to fix it. They even went on to tell me that if the changes they suggested didn't work, we could load the car up and bring it to them and they would tune it! As it turns out, they're suggestions were perfect and we went racing. My 322# cousin put the first run on the car. He did a very conservative launch to get a feel for the new transmission and 2 step. On a easy pass, he went 11.14, but we noticed the 4 year old bottom end was making some noise. One the next run, it broke a couple rod bolts and spit parts out the oil pan. The new motor is a Scott Shafiroff 434, and I can guarantee we won't use anything but the Predators on it.