[mchell]

Originally Posted by PLAY400

It's a custom Comp Cam 260/265 dur. @ .050" lift .370"/.375" lobe lift on a
110 lobe sep. Springs have a couple dozen runs on them but were checked by my machinist when we tore the motor apart last year for an inspection. Shifting anywhere from 5000-5500. Majority of my runs had a 1.5~ 60'er but times were slower due to my errors. Only had the car out once last year so I spent the time enjoying the rides and didn't change the tune at all. Running 36 locked advance

curious.....whats the cubes and compression ratio?....race only or street/strip?

agree with others that you are probably pushing thru your converter.....a tight converter may cause you to lose some 60...depending on motor........could just be too much gear and converter combined for motor charictaristics....