so I've acquired a 20r('79), a 22r('84 early), and a 22re('87) engine. all ran when pulled. my question is, what do i use to get the best performance in one engine? I've read about using a 20r head on the 22r block, but is that the early block or the 85+ block that has a shorter deck height? or using the the flat top pistons or the stocked domed?
as it sits i have a lc .450 cam, adjustable cam gear, 4barrel offenhouser intake(22r), 2 barrel offen. intake(22r), pacesetter header, and some other little odds and ends. all the engines are complete.
also does anyone know if there is a difference between the 20r's heads or are they all the same?