I fly a 1974 very nice PA28-180 Archer owned by an aeroclub; they gave me the AFM (airplane flight manual), but we cannot find the performance sheets (take-off, climb, cruise, landing graphs). The engine: Lycoming O-360-A4A; carb. IO-3878.

On the web I found only those about PA28-181, but it's not safe to use them for a different Piper version.

Can anyone send me those graphs by email?
Thank's a lot for your help.