In a message dated 8/9/04 9:53:10 PM Eastern Daylight Time, pottsf@msn.com writes: > A method for calibrating the tach using a battery charger powered by house > current is in the Classic Corvair on Page 271 Hey Joe, That may be rather difficult since the Classic Corvair has only 260 pages! Instead you'll find that info on page 233 of Bob Helt's excellent book. Frank Burkhard