X-heads or J-heads on a 360 LA Engine

Dartswinger70 said
You do have a point here and I would like to add the fix for that with the j s with 1.88s was to have 2.02s installed. If you find J's with 2.02s chances are they've been rebuilt already but some say they came with 2.02s but that's another thread I think. I have a set of Js on th ebench now with 2.02s. i took them apart to clean them up. The intakes were knurled and nice and tight the exhaust has 15- 20 thousanths play it feels like LOL! so I need guides installed.

68 -69 some early 70's had X/894 heads. Most 70's and all 71's had J / U/ O/ Z heads they were all 915 with 202 valves . All 72 8.5-1 340s came with 915 heads with 188 valves. If you are running a full factory exhaust the 188's are all you need with 9-1 comp. Are 202's better? I asked my wife she said bigger is always better.