BMEP Rob the best thing to do is stay with what every KCR has givin you. Webers, Olbergs, TWM or any other stack setup don't like to have a narrow LSA number. Reversion starts to happen. If you find a 114 LSA cam thats better than a 112 LSA. I am building a 498 Shelby motor with 58 TWM setup. I have a KCR custom hydro cam with a .622" lift and your duration numbers. It will have 10.5 compression with a worked aluminium head like the stage 3 from KCR. I build torque motors not HP motors. I run either 3.31 or 3.08 gears in the rearend. I have 2 transmissions for the car, a 5 spd and 6 spd with overdrive. With the power and weight of a cobra you are going to be about 620ft of torque and about 560 HP with the 482. My 482 with a small hydro crane roller is about 480 hp and 540ft of tork, it's a hand full. This is with an FI system and a 1,200 cfm throttle body. I hope you are a custom to high powered cars and have QUICK REACTIONS.
These cars are a handful. I would limit the stroker motor to 6,500 rpm MAX. If you are running a wide ratio 5 spd, I would also drop the gearing to the 3.00-3.20's. You didn't say which tires you are going to run on and size. If on the street 15" for the track unless the 15" are autocross tires like Hossiers or big letter GY you are going to have too much power in the mid range of the motor. I run 15" crappy BFG on the street and 17" pilots on the track in street class tires. Pilots are working OK for me. SFFiredog just finished a 511 motor with the same setup. See what numbers he came out with and cam he is running. He builds FE's part time. Check his photos here in CC. The motor was to get dynoed last week after breakin. There is alot more to talk about on this like exhaust system, suspension, SAFETY issues, and serious are you about racing?
If you are going roadracing add an accusump to your
oil system. 3 quart. You can use this as a preoiler for before start the motor, and leave it open on the track to maintain
oil pressure on high "G" turns and coast down or hard braking. You will need 2 different shocks and springs setup if you want to really drive this car at the track and have it handle like it's stuck on rails.
If you want to talk, call me at 732-254-3536 in the evening or private e-mail with a number to reach you at in the evening. I'm in NJ and have toll free phone calling. Rick L. There are some other things you can do with the motor also.