Originally Posted by Caballerokid
I chose the domes close to 10 years ago because of the larger chamber heads. Now knowing what i know i wouldn't do it again. That being said this motor has only had a few tanks of gas ran through it. Im not going to tear the whole motor down and start over. Dont have the money and that would take all the fun out of it thats left after a 10 year project with only getting to drive a few tanks through it so far. That being said... if i run a 72cc chamber isnt that defeating the purpose of getting rid of my 882 76cc heads??? I'm still waiting to hear back from Dart if those pistons will be a flat no go or just check them out. As far as feder-mogal who makes the pistons says they should be fine with the 64cc chambers whether we're talking heart shaped or not we'll find out. As far as the compression goes, ya its like 11.67:1 or close to that. I dont care because race fuel is easy to get where im at and wont drive much other than when i want to play with it. So i think im just going to see if i can get them to fit and probably clearance the domes as need be.. A new cam is sooner than later so in the mean time I'm not too worried about that.
There is no comparison between the 882 w/76 cc chambers and a good aftermarket head having 72cc chambers. The aftermarket head will be worth mondo power over the 882's, regardless of the chamber size. Whether the CR will be OK using the 72cc heads remains to be seen.
Use clay to see what the chamber/piston dome fit is. I wouldn't rely on someone telling me- I'd check it myself.
If you don't want to reassemble the engine using compatible parts (you have your reasons, I respect that), leave the 882's on it and drive it. I recall (I think) that it pings w/the 882 head. If that's true, unshroud the chambers and smooth them down to gain a few cc's.