There are vacuum boosters you can buy to help you out with that, wickedmach1. I will tell you right off that my car doesn't have power anything, so my knowledge is not first-hand with vacuum. But I'd go with a cam that had duration of about 240 degrees at .050" and around the same lift that you have now. It's not much bigger, but it'll match up better with the AFR 185s, and also with the 393. If you went to 205s, you could go to a far bigger cam...but it's up to you.
Another thing to consider is idle quality. You may want it to idle like a stocker, like fastcoupe68's 408, and even with the 240ish duration cam I recommended, you won't be VERY lumpy at idle unless you go with a cam that has an LSA (lobe separation angle if you didn't know) of 110 or lower. My old cam was a 230/244 with a 108 and at anything below 1100 sounded outright nasty. It was also very loud even with the stock exhaust. Now I have a 226/226 with a 110 LSA and although it's currently idling at 1200, it's noticeably quieter at idle and throughout the RPM range.
Once you pass a certain duration in camshafts, I believe it's somewhere around 240, you stop making more torque, and you just move it farther up in the RPM range. Since you're going to be driving on the street, you want torque available at a lower RPM.
Intake/head/cam matching is very important... I just plain don't like Edelbrock, which is why I don't recommend the Victor Jr. If you want a single plane, get a weiand x-celerator. The victor jr. is set up for 3500-8000rpm operation, the cam you specified would go to 5500/6000 and still make power, but that's not very much overlap IMO. The weaind makes power from something like 1500 all the way to redline, pretty impressive to me.
another thing, with a 393 and a high numerical rear gear ratio, you're going to be lighting up the tires at will. I don't know how much it rains in Austin, but you might want to consider a 3.25 or so rear end. Your wallet will thank you, too. If you're not concerned with this, then have fun.
In the end, it's up to you. With nearly 400 cubic inches, you really can't go wrong. You'll make gobs of power.
Another thing to consider is idle quality. You may want it to idle like a stocker, like fastcoupe68's 408, and even with the 240ish duration cam I recommended, you won't be VERY lumpy at idle unless you go with a cam that has an LSA (lobe separation angle if you didn't know) of 110 or lower. My old cam was a 230/244 with a 108 and at anything below 1100 sounded outright nasty. It was also very loud even with the stock exhaust. Now I have a 226/226 with a 110 LSA and although it's currently idling at 1200, it's noticeably quieter at idle and throughout the RPM range.
Once you pass a certain duration in camshafts, I believe it's somewhere around 240, you stop making more torque, and you just move it farther up in the RPM range. Since you're going to be driving on the street, you want torque available at a lower RPM.
Intake/head/cam matching is very important... I just plain don't like Edelbrock, which is why I don't recommend the Victor Jr. If you want a single plane, get a weiand x-celerator. The victor jr. is set up for 3500-8000rpm operation, the cam you specified would go to 5500/6000 and still make power, but that's not very much overlap IMO. The weaind makes power from something like 1500 all the way to redline, pretty impressive to me.
another thing, with a 393 and a high numerical rear gear ratio, you're going to be lighting up the tires at will. I don't know how much it rains in Austin, but you might want to consider a 3.25 or so rear end. Your wallet will thank you, too. If you're not concerned with this, then have fun.
In the end, it's up to you. With nearly 400 cubic inches, you really can't go wrong. You'll make gobs of power.
