Don't know, hasn't been fired up yet. It's a long story. But for 37 years, after building the basis of the bike, it sat in storage. When my engine builder built it he told me "I bought Pete's 63ci Sportster back and put his top end on your motor, taking it from 53ci to 63ci." So for the last 37 years I though it was 1032cc motor, up from 883. When I pulled it out of moth balls 5 years ago to ready it for a land speed record attempt after going to Bonneville a few times with a car I helped build and setting multiple world records, I realized I would have a hard time competing because my 1032 fit into a 1000-1350cc class and I would be at the bottom end of engine size. I ended up having to tear down this motor that had never been fired due to corrosion of the inside of the cases from sitting. When the new mechanic had it torn down he informed me that I did not have a 63ci engine. Needless to say I was extremely disappointed that my original builder, a friend, would have screwed me. New builder says " you didn't get screwed unless you think having 81ci is getting screwed. You have a 63ci top end, but he also gave you a 4-5/8" stroker kit in it." I was elated to know that for a few seconds while I figured in my head that indeed I now have a 1327cc motor that surely would be competitive with those running up to 1350cc motors. The elation was short lived when I realized this stroker kit would severely limit the RPM levels I could have run with the short stroke motor. Now I have to figure out all new gearing package to run the speeds I need.