I have a 260z with an L28 fitted to it. I've been told you can run unleaded on some l28 heads. I would state which head is fitted to mine but I can't remember and it's cold and dark out side so can someone tell me what codes run on unleaded?


-=240z=-

 

All the heads except for the "E" series should be fine with unleaded. E-88 and E-31 heads should have the valve seats replaced with stainless to become compatible