Thread: Cylinder heads-a-gogo

Tweet

Now where do the steam holes come in? Why a 4000 converter? I think we're getting off the subject here.
What car is the engine sitting in, Dallas? Don't get confused if you're new to V8s, a 350 and a 305 both don't need steam holes. Only the 400 does. So forget them again. And also forget the 882 heads. They flow well but they have junk chambers and no compression. Not the way to go if you want a well performing engine. And go iron, not Aluminum. Alum heads are lighter, but they pull combustion heat out of your cylinder and drop the pressure which you need to turn the crank. Alum is something for racers who use very high compression and don't want detonation (OK, who does want detonation? ). Iron is the way to go and cheaper. If you get some heads at the junk yard, compare these chambers: the ones one the left are the 882s you're asking about. See how they've got lots of tight corners in them? That's where the flame front can't get to fast, so the combustion will be slower and not so complete as in the chambers on the right. Here everything is nicely rounded and the flame can get everywhere very well. This gives you a much better burning process and more power, add to that the fact that the heads on the right are 64cc and on the left they're 76cc. That drops your compression by over one point. The ones on the right are 041s, very good heads, but hard to find. But tell us more about you're engine, the intended use (daily driver/street/strip) and vehicle weight and we can tell you more about the heads you need. Hope I could help,
Mad