you may be onto something. i have been bumping up the timing. for instance bottom of 2nd gear is 3200 rpm, boost is 5.6psi timing is 27 degrees, it revs to 4700, at that point boost is 11.5psi and timing is 25 degrees. 3rd is simular with 5.6psi to start but only builds to about 10psi because of lower rpms and this problem. i did change to another very nice non restrictive filter. the carb one failed on the suction end of the pump. swap meets are coming up, maybe i'll find some nice drag radials.
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