...rpms fluctuate too.
Engine is a 318 magnum, rebuilt short block, new rings. < 1 hour run time.
Turbocharged, 218/218 cam @ .050, degreed within 1* of spec, 113. 115 lsa
EQ Heads have been cleaned up and unshrouded to lower compression, probably in the high 8’s:1. Compression was 9.15:1...