Early Vs Late Bigport head - Making Bigport 4AGE great again - Part 3

Dyno testing Early and late Bigport cylinder heads. Engine spec in this vid: 100% stock early bigport head 100% stock late bigport head Late 7.1mm factory camshafts Redtop bigport block with 10.3:1 smallport pistons Toda 3.7kg flywheel Garage 4age Header and 3" exhaust. Link G4 ecu extra leaky valve stem seals Stock tvis intake 47mm itb long runner. Help me make more vids, grab some merch: teespring.com/stores/garage4age Insta : @garage4age @Garage 4age