Im trying to piece together a package for my 91z. I have $1,000 to spend on a top end package. I was thinking of vortec combo but the HOT cam isnt the best torque cam. what other cam would work a lot better with the vortec heads or HSR? I also have 3.73 gears in the rear and a 6spd. I am basically looking for a good cam that wil work with al my mods. If need be I can put 3.42's back in. what do ilook for in a cam grind to get torque and hp in my rpm for my mods

 

To some extent, you'll look at overlap for torque.

With more overlap, you'll have more time for the inertia of the air to cram as much air as possible into the cylinder for more horsepower. But this effect only works at higher RPMs, therefore more high RPM horsepower. With less overlap, you're not letting any air slip out because both valves are open at the same time while you're at low RPMs (the ram effect isn't there), so you get more "power" at low RPMs. But your HP takes a hit because that sort of chokes it at higher RPMs. In this manner, you get more torque (and vacuum).

 

Don't worry so much about torque. It's not that big a deal to lose some low end. Especially with a manual trans.

Also, I don't think there's an HSR that works with Vortec heads (yet).

 

Ya I know the HSR wont work with the vortec heads so its either one or the other for me and I cant decide on what one will give me more power

 

You can't look at a single spec to determine how much torque you will make. It's very complicated but a better question to ask is WHERE in the RPM range do you want to make the torque? A cam that is well matched to the cylinder head's and intake's RPM range is going to pay big dividends. One that is not well matched will be a dog by comparison. CHoose your intake and heads first, then ask the cam question.

BTW- duration is, in general, the biggest factor determining the range a cam will make power in.