Edelbrock #8550 Head Bolt Kit is for 1958-86 302-400 S/B Chevy Engines with Edelbrock #60619, 60639, 60659, 60697, 60715, 60719, 60735, 60739, 60759, 60849, 60859, 60869, 60879, 60887, 60889, 60895, 60899, 60909, 60949, 60995, 60999 Heads.