Starting my engine build

[swamp rat]

This is why it was previously mentioned about finishing one thing at a time, rehook the stock system to rule out anything you have changed or modified and not doing multiple things at once, Better to have concentrated on the engine until all the bugs are worked out and done, this includes the stock transmission, shifter, oil pan and pickup, and the stock cooling system. Once it all works like it used too, then install the shifter, the pan, the electric fan, the radiator ect....

Without it running unhook the shifter and manually shift the transmission by hand to be sure it shifts into all gears to check all detent's, rehook the stock linkages and make sure all the detents engage with all positions on the shifter, It helps to have a helper to watch the movement.

If it shifts into all the gears the problem is elsewhere, that leaves anything else you changed or modified, the pickup tube not picking up oil? Check the modulator hose at the tranny end? maybe that shifter