And I thought the point of buying these was to not spend as much as, or very close to, what you’d have into a set of TF’s.
The throat diameter is 1.890, which is 93% of the 2.02 valve.
Way too big for the lift range most everyone using these will be running.
They cut right up to the 45 on the vj.
Maybe PBR can measure the throat of the unported head.
My guess is, it’s bigger than it should be as well.
They want the porting to be “pretty”, with a minimum of drop outs...... Imo they’re porting below the seats for appearance...... not for flow.
View attachment 1715443056
In order to have the throat percentage to be more in line with the valve diameter and lifts most will run with these heads you’d need to run a 2.08 valve.
Then you start to run into valve shrouding issues....... more $$$ to fix.
