I show the dyno test results of the promaxx small bore ls3 heads. I also give flow numbers and other info on the heads.
Link to purchase dyno results being tested.
https://weingartnerracing.braveshop.com/#!/PDF-Copies-Of-Dyno-Session-2-With-LS-408-Dyno-Mule/p/680079333/category=0
Link to preorder book
https://weingartnerracing.braveshop.com/#!/Preorder-of-LS-DYNO-Mule-Testing-Print-Book/p/680672559/category=0