What rpm do you shift at?????

360 +0.030 with KB107s, MP purple 284/484 purple cam, ported magnum heads, Found out I was shifting at over 7000 rpm with no tach, HOOked a tach up and set light to 6500 and it still pulled hard after the light kicked on. Happened to spin rod bearing a day later. So it's comin out this weekend!