Look around here or online for SBC build formulas, they are out there. You will need at leat 1.94" intake heads that are pocket ported. You will need a compression ratio 10:1 minimum. You will need a fairly aggressive street performance cam, preferably hydraulic roller. You will also need a very good intake, single plane Victor Junior for example with a 650 cfm carb. Headers and low restriction mufflers.

Kitz