Speedmaster Small block porting tips and results Part 1
I have some cnc heads here.
The throat is flat out too big for the 2.02 valve at 1.890(93.5%).
That’s a big part of why the mid-lift numbers with those heads aren’t great(frankly, with the ootb vj the low/mid-lift numbers are rather poor. The intake port doesn’t wake up til about .600 lift).
They cnc the bowl right to the 45.
I have some cnc heads here.
The throat is flat out too big for the 2.02 valve at 1.890(93.5%).
That’s a big part of why the mid-lift numbers with those heads aren’t great(frankly, with the ootb vj the low/mid-lift numbers are rather poor. The intake port doesn’t wake up til about .600 lift).
They cnc the bowl right to the 45.