ProMaxx purchases the heads bare and do the rest of the work right here in the USA. What exact heads they are, IDK.
Best move right there.
Cheapest move? IDK.
I was also able to run my Edelbrock heads OOTB, some 25+ years ago when they were a new head and everything was under a lot of scrutiny and internet reporters.
Now, not so much from what I read ......
Will trick flow maintain there high level of quality years down the road????
The flow rates are only a few cfm above the ProMaxx heads right where it counts for the OP’s cam ????? ProMaxx will also substitute a spring you spec, like for the cam your going to run, out for there’s so you get what you need right OOTB.
Just sayin.....
The small cfm spread is close to nothing. 3 cfm @ 500 Or was it higher? Dang!
What’s right?
Your opinion?
The few cfm difference in the new TF head?
Im not flag waving for anybody here.
