SBM Edelbrock/Speedmaster Head Data
One more bit of information that I find fascinating. Look at the difference in the shape of the valve seats. The Edelbrock has a radius on the entry and a 0 degree top cut in the chamber. The Speedmaster goes from a 90 degree to 60 degree bottom cut on entry and has a 15 degree top cut in the chamber.
One more bit of information that I find fascinating. Look at the difference in the shape of the valve seats. The Edelbrock has a radius on the entry and a 0 degree top cut in the chamber. The Speedmaster goes from a 90 degree to 60 degree bottom cut on entry and has a 15 degree top cut in the chamber.