Heads:
stock heads that have been ported and polished. I believe they are 190cc, 1.94 int, 1.5 exh. aluminum heads.

Cam:
LT4 Hotcam 218 / 228, .525 / .525 112 LSA
Springs, valve locks, shims, retainers.
And Upgrade to:
7/16 Stud full-roller 1.6 Rockers w/ guideplates.

how much of a improvement will I see from 280 rwhp?
Am i going to need a stall to drive the car.. or i can live without one?
Programming is a must, right?

and would this combo be good in the future for a 100 shot or 150 shot?

 

I guess not....

 

i am guessing,just so you know.I would say 45-55rwhp.To max it you need programming.The stock stall will be fine for now.It will work ok with N20,but a 150 shot will put you in a rebuild mode soon.

 

To give you an example of what the lt4 cam and rockers will do without heads. I have a friend who just got his car tuned with the lt4 hot cam and rockers and he put down a best of 360rw. The a/f was to lean so the tuner had to richen it back up some. In the end he made 340rw and 330ft.lbs of torque. He has some heads that will be going the car pretty soon so I would expect another 25rw out of it.