I don't mean to be disrespectful but it seems to me that you make a lot of knee jerk decisions without fully researching what the ňut come will be which is costing you a lot of money. If you had the 400 why did you start building the 330? If you're dead set on boost just get a smogger (low compression) 455 and add the boost.
Since you have already spent good money on your 330 just install a better cam, you may be quite happy.
Also if you had bought a built TH200-4r OD trans instead of a TH350 you could have run a high 3s or low 4s rear end which would have significantly increased performance.
You are in the right site to get informed answers to your questions. Just remember to ask before you spend!

 

i no onger have the 330 motor. i am trying tonbring the 400 nack to spects - this is why inneed lifters - i aready Have. a w30 cam tomfomin motor.’