vacuum pump brake booster help

[72blazer_mud_bogger]

So I think the 383 stroker is not making enough vacuum to stop my blazer on 37s with a 14bolt sf in the rear and 10 bolt in the front. New booster, new master, wilwood adjustable prop valve. At idle she barely stops so I had thought a out putting a canister and vacuum pump on to see if she stops. First question is did I just miss something and please let me know if you need any info. I will answer what I can. Second question can I use one of 80s style air pump that runs off the belt as a.vacuum pump. Thanks guys

Scott