HarleyTechTalk

Technical Forums => Twin Cam => Topic started by: HighLiner on June 17, 2020, 10:26:30 AM

Title: S&S super stock head ID
Post by: HighLiner on June 17, 2020, 10:26:30 AM
Are the casting numbers among the 79, 89, and 91 heads or do they just machine them accordingly?