My Tech notes ZZ3 Cam- Crankshaft duration I:308 E:316 Duration @.050 I:208 E:221 Lift I: 474 E: .510 Lobe: 112 TFS Heads- Total ignition @3000rpm 33, Accel plug #416, T-5 Manual Transmission- 1st-2.95, 2nd-1.94, 3rd-1.34, 4th-1.00, 5th-.73 ATI Balancer- p/n ATI-917080 Street and Performance MPFI MSD Digital 6 Ignition   12497870 88962749 12498008 OR 12496008 12489436 12499101 12498772 12499106 12497879