O-ringed heads questions

[Sprman]

Figured i would ask this here since most of y'all make a crap load of power. In regards to 0-ringed heads, how much power are y'all making that have them? Did you machine the block and heads for the o-ring or just the heads?? Just a general question/discussion and seeing the input of those that have them.

Thanks

 

[Blueboy]

For 0-rings, just head.
I did mine to help against a blown head gasket.

 

[devon lock]

I have o ringed head at least 50 passes at over 80lbs boost, no problems.

 

[jsf350]

ringed the head- haisley gasket- crazy amount of passes with dd and towing the goose neck/race truck

 

[Sprman]

Good deal, y'all have confirmed my thoughts. I have 0-ringed heads and such. I had someone tell me that it was pointless because i didn't have the block machined to match it.

 

[Got Smoke?]

On Fire rings ideally you do both, on my new motor Im just fire ringing the block. Tired of paying an extra 300 for rings when I have to replace a head.