i'm going to be reworking my 84 330 this summer. I know the 049 castings are pretty good heads and workable to get 500hp.

I have Oval ports on my motor but their 10114158 castings.

Are these heads any good?

Are they worth working and keeping or should I just buy a set of Merlins?

I'm looking for 450 to 500 reliable hp?

I plan on Stock crank and rods, forged pistons, ARP bolts, balanced assembly, I have Stainless Marine Big Block High Torque III Manifolds, and a Edelbrock Air Gap

Either working my heads or Merlins? Haven't decided on a cam yet.

Thanks Rob

are you sure the number isn't 10114156 if so

1991 and up /open chamber gen v & vi /454 / 118cc

from what I know of these heads, save for merlins

I did a double take when I first looked at the number because I thought it was a 6. But after looking closer it really seems to be a 8. The motor is in a 84 monza. As far as I know and from what the previous owner told me the motor was susposed to be stock.

anyone?

Off the top of my head, I think they have the large oval ports. Should work great!

They have got to be peanut port heads. I cant even find a 158 head, must be 156. http://www.mortec.com/bbc.htm

If it is a 330hp it's got cast crank and rods.
I wouldn't be using them for 500hp.

They are a large oval port. I just changed exhaust and intake.

I've head cast crank was good to 550 hp?

How about having the rods shot peened?

Thanks

Use the cast crank and stock 3/8 bolt rods (the rods are forged steel), rpm is the killer, not the amount of horsepower. If you run at less than 5,250 rpm (oval port heads), keep it from detonating, and don't hold it wide open for a long time you will be just fine.
My opinion,
Sincerely
Dennis Moore

Good rod bolts are cheap insurance.