km1125 wrote:Source of the post The two that I feel were good tests were 4% and 5%. The third I did was 14%, but I'm not sure that was even at TDC.
Nice numbers....geez I had fresh race engines that were higher than that and they were 700 HP ( big piston to wall though).....I always had good luck with one plug out at a time and putting the power bar on the crank nut and against something to help stop rotation....too bad the gms have that small crank bolt, not something I would want to be trying to turn over the engine with, unless all the plugs were out.