Well i took the T/a to inspection today and it failed for hc and co2. It was a ton closer then i thought it was going to be. They test here at 15 mph. I estimate the motor makes about 400 horse. Just to review its a 355 holley street avenger carb 870, sportman II heads 11.5:1 compression, accel ignition, and a comp cams xtreme energy 274h cam. Its a 230/236 duration @.50 and .490 lift. Both emissions numbers were about 100 higher then they are allowed. Does anyone have any ideas on how to lower the emissions, my first thought was to lean the carb a bit, but it is tested at 15 mph. im not sure if it will make any difference. A friend said i could retard the timing a bit, does that make any sense? All aboard the Yankee express, next stop October.....
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19 years ago