Originally Posted by 454C10
stock flat tops on a 454 with 120-123cc heads (781's) makes around 7.7 to 7.9 :1 cr.
you will need a dome piston with 781's to get the compression up or do a 496 stroker kit.
Im going to order the things needed to measure the cc myself as techinspector1 recommended.. How did you do the math to find out the CR. What if or lets say the heads are 118 CC
what would be the CR then?