SBM Edelbrock/Speedmaster Head Data

PRH said
Imo, the curve on the cnc SM is as unimpressive as it is because it’s poorly executed.

With a more refined throat and valve job, the numbers in the middle could be noticeably better.

They’re in it for the quick cash and banking on the CNC buzzword for sales.

It’s pretty bad when there are areas near the middle of the curve where the ootb untouched head is better.

And the sad part is how hard would of it been to find someone to do a decent port job they could of copied, even now how hard would it be to update their cnc program to a better port shape.