need some vaccum help

im pumped i found a site for just big blocks here's my problem i have a standard bore 71 block dove heads running a extreme 4x4 270 and bleed down lifters stealth intake and a 830 hp carb 2 inch madd dog fenderwell headers havent started it yet i have to pull 15' at 1000 rpms has enybody ever run this cam and any input on if it will pull vucuum or not

I use to run the 15" vacuum class. I'm no cam expert but have been around the block a couple times .

In my opinion that cam will be real close if everything else is right. Too many variables to know for sure.
The lobe separation of that cam is 111*. That's going to hurt your vacuum some.
The duration and lift is close to what I ran but mine had a 114* lobe separation.
Compression will also be a factor. Mine has +.060 bore flat tops with a 0" deck block.

good luck
mike

A whole lot of variables, but you should be close.

To help with vacuum you need to build as much compression as you can, and run as small a carb as you can and still feed the engine, then run the carb lean on idle to help a little also. Just a few tricks I have learned over the years.

cool thanks u guys im sure ill have more questions first time building a mud truck with rules to follow

You can always advance the cam some and it will increase the vacuum and the power band will be at a lower rpm.

Dirty, I ran that same cam in my 466 before switching to a solid flat. Pretty much same specs as yours. .030 over D1 block, Dove heads, appr. 12-1 comp., 8012 Stealth BUT with a 750hp carb and L&L 1.750 headers. Pulled a steady 14-15in vacuum @ 1000 rpms. Billy

Locking the timing @ full advance helps also.