427 casting number
475 CFM at 900 lift
Titanium intake and exhaust valves
Jesel Shaft rocker setup with welded stands
Includes the valve covers
Heads are not ported, If you need more flow TRE out of Texas has a killer CNC program that make these flow 520 cfm for only $1500
These heads made 937 hp at the tire on my car with a single carb on e85.
So around 1100 hp on motor.
Rare edelbrock single carb intake $1200
Morel Offest lifters .842 with 1 season $300
2 cams and pushrod sets $200 for each cam