[scott foxwell]

The heads were talking about are the PS8012 358cc’s, they also make a smaller 315or 320 cc head. I found where someone did some work on those and got them to go a little over 400 cfm. Like I said before there very close to the AFR 357 and when I had a chance to pick these up for $1000 brand new from a boat racer I grabbed them. There probably a little on the small side for the 632 crate motor they come on so any work you do to improve flow will certainly help. Just doing a good valve job, open the throats up, blend everything in and open the push rod area a little I think would see good HP gains maybe 30-40 HP on his 632 since it’s already head limited. A full blown port job by some of of top guys like Foxwell, Chad and many others on this site I’m sure would see some excellent gains. Definitely a head not to overlook if you come across a set for a good price, most people would probably just over look them since there not a top name brand head.

They need a bigger valve for a 632 unless it's an RV engine or in a 4x4. That'll probably give you the most bang for the buck. You can port them till the cows come home but airspeed through the valve will be too high, hurt VE. A bigger valve will give you more area and more volume. A 632 eats up induction real fast.
Appreciate the mention.
JMO