Quote:
Originally Posted by randy wilson
Thanks guys, here's some details, advanced cam 1 degree, widened valve lash .003, went from 213 to 256 cranking compression, picked up 19 lbs torque, 21 hp with single 4, 51 hp 39 lbs. torque with duels, slowed down a tenth and 3 mph, doesn't make sense to me. The reason we don't go back is we tightened up compression, and that's where everything has to be set. Maybe we just haven't found the sweet spot yet. Will be running at eddyville this weekend in the last modified lbs. per cube, no break-out race this weekend, and we need to have our ducks in a row.
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Compaired to your original combination, did the new power happen at the same spot in the torque curve? We had a similar situation but the combination of the engine on the dyno did not match what the car liked, we had to change the car to fit the new curve of the engine. In our case we had to change low gear and shift points. That is a big change with 1 deg of cam movement. Good luck.