[badlefthand]

Run a 59 for almost 14 years.Did not know about tubes etc.Changed heads several times due to rocker studs pulling out.We stayed away from machine shops back than cheaper to get $20 heads from junk yard.Never knew about reverse flow,just knew 59/60 interchanged, Did bore ,turn crank and overhauled engine in 68 or 69 studs pulled out again in 74 and I blew one of hoses off elbow,it cooked than, about 150 thou on car and it was pretty well shot any how so it went to the big pile.Wife had 60 bonney in mid to late 60s same type deal with heads.Just used what I had. The 389 was plentyfull in scrap yard.Cannot recall major problem with temp on either but would have to say the 60 had more valve trouble,I just figured she never drove it hard enough. . The 59 was one of the hot ones in early 60s .Ate most every thing up in short run and that is what it was about.I can't tell you all the paticulars because I dont know them,only can say how things were done.Run a 61 for awhile late 60,early 70s, did'nt like that one.I would say to try with out tubes see what happens,no bigger deal to put in first or later.There is a thread on py where a couple of engineers were showing what they knew about reverse flow and patting themselves on the back couple years ago.Was to much for me.I just try it to see if it fits and works.