I may be getting older, but I refuse to grow up!
Join Date: Jun 2012
Location: PACIFIC N.W.
I'm not into 660's but I don't see a 70 HP build with a 10:1 piston and stage 1 cam. The porting would have to be outstanding to double the HP. Even your new build may need more compression to reach your stated HP range.
'19 Can-Am X3, RS Turbo, 172 HP, 1300x15 STU #2 paddle, Tribute front, DynaTec controller, cat delete, GTP blow off valve, custom flame wrap, Bent Metal windshield, Blazer wiper, rear window, 48in LED light bar, 14in LED light bar, GTP LED side lights, S3 shock tower brace, aluminum rear pull plate, 5K Badlands winch, dual batteries, 5ft lighted whips, Rugged radio and intercom, interior lights, rock lights, chase lights, over $200 additional switches, YES, street legal with dirt tires.