Anyway, I've got a 350 rocket in it now. What happened was, I recently bought this car. I took it out on a long straight desert road to see what she had. I got her up to about 150 or so and then it got sluggish on me (tranny fluid was leaking out through the pan). I parked it then when I got in and started it, it was hard to start and I had that knocking noise. Finally it just died on me. I towed it home and got it started again and even drove it a little, but it still knocks in park and lacks power.