It was an Ultradyne, flat tappet solid lifter, custom ground nitrous cam. I tried a bunch of different cams and intakes to see what the difference was and the combo that ran 11.60s was the torker 340 and the ultradyne. The Specs on the cam were 246 degrees at .050 on the intake and exhaust. 540 lift and had a 112 LSA. The compression was 11.11 to 1. This motor ran happily on 91 octane found here in California. I tried an air gap and changed nothing else and the car dropped off 2 tenths and 2 mph roughly. I think single planes get a bad rap just like rectangle port heads on chebbies do or even the ford clevelands (which I own one of each). I drove this car daily on the street for 2 years and loved it. I will admit that the weather here is mild with maybe 45 degree temps on winter mornings. Obviously I didnt run a choke and I would move up a size in squirters to make cold driveability better. I really had no problem driving it on the street. I did try the Victor 340 (?) I dont remember but its the old style victor with the small ports. The car really slowed down which was no surprise since it was meant to be ported. I am looking to try the new victor edelbrock came out with. So theres my opinion and with that and $3.50 you can go out and buy a starbucks coffee with it.