BMI Aluminum head specs

[TJ_STROKER]

Hello everyone, I have a technical query for the most experienced, I am looking for the technical specifications of the BMI aluminum cylinder head, I want to change the valve (Int. 2.02 / Exh. 1.60) and cam, springs in my 4.7 engine
Thanks !!!

[Cheromaniac]

I read somewhere that the BMI head was originally designed by Clifford Performance and sold to Hesco.

https://hesco.us/products/7735/cylinder-heads

Quoted flow numbers are as follows:

Valve lift (in)... 0.1 ... 0.2 ... 0.3 ... 0.4 ... 0.5
Intake flow.... 74.0 134.0 183.0 226.0 255.0
Exhaust flow. 55.0 93.0 117.0 131.0 142.0