Is there a break in period for new heads??? It didn't say anything about it in the installation guide that came with the heads (305 Worlds). I was gonna take it easy on them the first 50 miles or so, but wanted to see if it should be longer than that.

 

There is no break in for new heads. However, depending on the head gasket you used and personal preference, some like to re-torque their head bolts after putting the engine through a few heat cycles.

 

OK, I'm gonna try to stay away from re-tourqing the bolts. The headers make it damn near impossible to torque the side bolts. Good to know the heads are good to go though, thanks.