For value conscious enthusiasts, the Street Fire® HEI is a great choice. We know the importance of a centrifugal advance in a distributor so our engineers made sure that the Street Fire® received an advance assembly with coated weights and welded weight pins. Another area that you cannot afford to scrimp on is with a distributor gear. The Street Fire® is fit with the same gear that is used on our Pro-Billet models. The metallurgy of this gear has been refined for years to perform through the harshest conditions.