I never quote horsepower numbers as I never dyno my stuff but my last Edelbrock headed 408 went 6.14 and 9.70’s with a worn out bore at 2840 pounds. This one will have more compression, more cam, fresh bore, and possibly a bigger carb. I had an 850 on the last one. Heads should be a touch better so I hope to see 9.50’s possibly better if I try a radial tire.