I am not sure whether these heads are J heads? They have been ported by the looks, they were on my 340 +.040" and worked well, my main question is will they work on a 318 +.040" I am building. Will be 10:1-10.5:1 compression, flat tappet hydraulic around .480" lift, will the intake valve clear the bore?
View attachment 1715778037
View attachment 1715778038
View attachment 1715778039
View attachment 1715778040
View attachment 1715778041
