Changing Carbs, What jets?

There are a few outfits out there that make conversion metering plates with provisions for jets or you could go with a block. If you stick a metering block on it, you'll need a new carb line if you already have one.

I don't really have any input on the blocks, the VS carbs I've run already had a Holley metering block installed.

i just cut my rail in half and used some fuel hose so i didn't have to remove the whole rail at the track for jet changes...

Any idea what you engine pulls for vacuum? The 750 I had on my slant needed a plugged power valve, as it had 3 inches of vacuum at idle in neutral. Once I found that out and plugged the power valve, I had to jet WAY up. It ran really well, and I drove it almost daily for 2 summers.

yes... about 11 at 1000rpm idle, about 7 at 700 idle, and about 15 on cruise @ 50mph/3000rpm lol... my converter is just a little light so i throw it in N at lights or two foot it...

EDIT: and running a 6.5 PV