i realy want my car to do a wheelie for real that is my goal how would i do this with a 355 on a budget 81 z 28

 

You probably don't!! But one thing you can do and it doesn't cost anything but time, is to remove every once of weight possible.

 

put 600-800 pounds in the rear most part of the trunk and take off the front shocks and sway bar.

 

There are a ton of factors to consider, why are you wanting to wheelie? These cars are fairly easy to hook up, but before you consider even trying to build an engine capable of lifting the car, you might want to first consider building your chassis first. Subframe connectors, either traction bars or cal-tracs, beefing up or replacing the weak 10-bolt rear end, and a roll cage to help stiffen up the body. I've seen too many of these cars ruined from too much chassis flex. Also you'll need some awesome shocks to keep from planting that heavy front nose into the pavement! I've got a '78 that I've built for the NMCA True Street class, and I learned alot as I built my car by getting input from other 2nd gen owners at the track. So get your chassis/suspension built up before you even consider building a powertrain for this, or you could end up with a heap on a frame rack wondering if you'll be able to save her...so do all of that and I'd say somewhere around 425 rwhp you should see some pretty decent lift!

 

Along with what silver said another HUGE factor is what gear ratio you are using in the rear and keep in mind that if you are racing doing a wheelie looks really cool but in reality it is just as bad if not worse than spinning your tires off the line.

 

Lets break this down.
1: 355, and a 4500lb car
2: on a budget
3: 4500lb car
If driving around with a 5500 stall and 456 gears is your thing then you are going in the right direction.
Frame has to be tied together, $1000 rear end, 500 horsepower engine, car weight reduction.
Really not worth wasting your time or money.
How about running in the 7s in the 1/8, thats a goal you can reach.