383 build no power
Stock 383HP Intake and exhaust and Holley 600 Timing is at 30 at idle per FBO instructions 18 Intial 12 vacuum Advance on constant manifold. I gave him my Tire,Gear ,cam Size and he set up a new Pertronix Distributor up for me. Said best curve would be all in at 3200 I thik he put 16 mechanical advance in it. Throttle going all the way back and used paper clip to verify four barrel opens.Torque converter is a new dacco 764 from auto zone
Is that "all the way back" using the gas-pedal?
Is that Holley a Vacuum Secondary?
You need more timing. Put the light on it, rev it up until it reaches a maximum number of degrees and add 200 rpm. That number might be 3200rpm or 3600 or 4200, or whatever rpm.From now on, that is the rpm that you will set your power-timing at. Next disconnect the vacuum advance and plug the carb-port, and re-set your power-timing to 36 degrees. Never mind what it is at idle. Then roadtest it to be sure it does not detonate under full power. Then run it up to 65mph in 2nd, at various throttle settings, and make sure again that she is detonation-free.I will not buy you a new engine if you melt it down.Finally, repeat the tirespin test.
But before I would do any of that, I would do a compression test, and a stall test.
If the compression is down, I would do a leakdown test. If the valves are leaking there are other tests.
FWIW; that cam should not need the Vcan hooked to manifold vacuum. It may produce much better part throttle/low load results when hooked to the timed spark-port.And if there really is 16 mechanical in the dizzy, after the reset there will be 18+4 =22initial, plus the 12 vacuum equals 34 of idle timing. This will probably be too much. The 22 will be just right,all by itself. I've tuned bigger cams in smaller engines with way less than 22.
