Does anyone have any information or personal experience with these heads? They were advertised a few years ago as a great lightweight replacement for the cast iron 7.4 heads.

Alumn. 12 valve heads 2 intake per cylinder, claim 100 hp increase. Had a website but can't find it now.

They also had a head that was cast iron that the spark plug was relocated and the chambers are 100 cc.You have to watch using them it increases compression substantially.They were not designed
or intended for marine use.I'll check and see if I still have info on them and post it.

Call Nordskog...I think they were the exclusive distributor at one time. I don't think they were working out too well for boats...kept burning the electrodes off the spark plugs?!