I own a '67 Buick Riviera, currently engine has leaky heads (exhaust). It doesn't pull as it should etc etc... SO, I need to get them sent in to be machined, ill get new valves etc etc.
A good friend of mine mentioned that I might look into getting Olds heads from a 455 rocket, 1969 or 70 as those engines were more powerful than mine? I know that the Chiltons manual shows the torque higher, over 500 ft*lbs and the HP near 400... Will the heads do this? has anyone tried? Those heads should bolt up shouldn't they?
Anyone have anything to say about this?
Thanks

Olds head only fit Oldsmobiles. Pontiac heads only fit Pontiacs. Chevy heads only fit Chevys. And Buick heads only fit Buicks. Back in the day each division at GM made their own engines, and each engine was unique in design and unique to the marque, until around the mid-to-late '70's. Nothing was interchangeable except some running accessories like alternators, power steering pumps, A/C compressors, etc.

What you can do is to have your Buick heads converted to Stage 1 specs. This involves installing larger valves and some chamber work to unshroud the larger valves. You can also have some port work done to improve flow. The limiting factor is the amount of money you want to spend. If you decide to go ahead with the conversion, make sure you have the work done by an experienced Buick builder (Gessler in N.J., Tri-Shield in Minnesota, PAE in Texas, just to name a few - I'm sure there are many others). Otherwise if you just want a stock rebuild, bring them to any competent shop. You can also purchase brand new aluminum Street Eliminator Stage 1 heads from TA Performance. Right out of the box they will out-perform most ported iron heads, and they have room for improvement too. These will set you back around $2K, although I don't think you will be able to realize the full potential of these heads without getting into the rest of the motor or going to a 455. Here are some web sights you can look at for more information:

Gessler: http://www.gesslerheadporting.com

Tri-Shield: http://www.trishieldperf.com

PAE: http://www.paeenterprises.com

TA: http://www.taperformance.com