It does rev freely. Just not putting it to the ground, unless that tranzact trans is just plain f'd up from them. I have a new crank sensor from Holley I can put on. They want to run a compression leak down, when they changed the oil they said it smelt like fuel, I'm wondering if the old fuel injectors washed the cylinders and the new bigger ones made it worse causing to much blow by. The said that the valve cover fittings(didn't hook up the breather system yet) had a lot of vent gas coming out, which they was some when we first went there but if its excessive could be the lack of power. Thoughts.