Ok guys so i cracked my #4 piston, so i went ahead and rebuilt it, it run and idals perfect, the only problem is sometimes when i stop its smokes. It doesnt smoke all the time, its random. it doest smoke all the time, as if it was the oil rings seating. Also i put a new head on it....

 

Could b the rings are driving easily or like speed racer? Your rings should comes with break in instructions usually 10 wot pulls from 35-55 mph least that's Wut my Hastings say also after your first start up did u let the car idle for awhile then change the oil?

 

Nope driving normal, but a few short pulls after 300 miles, but i also get my RPM's up and then let it dial down a few times.