Is any body familiar with a chevy 292 with a 3 Speed on the tree?

[fullmetal]

Hi there.... i recently bought a 71 c10 with a 292 and a 3 on the tree transmission.(with no tach) I notice that when i shift from 1st to 2nd or or 2nd to 3rd that the rpms are too low to meet the proceeding gear. I now bring my engine to a way high rpm ( i can tell because of the way she feels and sounds) and then shift.

I would like to know if this is normal for my kind of set up or maybe i have a serious problem.


Thanks

Rhy