Inliners International Forums General Discussion Engines 3 bbl tuning questions

I have a stock 250 I'm building for my 1958 chevy biscayne. We'll only thing stock is the block and internals. Im slowly collecting parts. It'll be a step up from my 235 I think.
I'm looking to get my 3bbl that I bought from 12 bolt Tom tuned close before it runs. Like change the jets maybe power valve or whatever I need to do.
Or is it an option to put it on my 235? I have Clifford intake, weber 38, hei dizzy, 700r4. What would that tune look like?
Thank you for any advice
Jonny

I suggest to try running it as is first. After that, use the springs to adjust the secondary opening rate.