running high rpms.

well i got my front suspension replaced on my car, i drove the car today, and it seems that it is running a little high in rpms, in 5th gear doing 55 mph its running at 1900 rpm, does that sound right for a 305 tbi? my brothers trans am runs around 1500 rpm, he drove it and said that my guage was wrong. in the lower gears im running any were from
2000-2500 rpm.

um,..... i use automatics, not to sure about manuals

Manuals run higher rpm all around then automatics.

What rpm was it before the work? The stock tach is notorious for being inaccurate in third gens. Mine usually says @6000 all the time. Sopposedly, there is a diode or two that are on the pcb that go bad causing the tach to read wrong.

Well i got a 92' silverado running on a 305 manual and in OD(5th) at around that speed im usually running @2000-2200 and redline at 5. And i mean if your shifting at around 2500rpms then it would seem right that your 5th gear rpm is right. should mainly be around the 2000-2500 range if it drops below 1500 then prolly be a drop in oil pressure(piston damage).