Jul 14, 2021 #1 cstew47 Full Access Member Joined Feb 7, 2015 Posts 181 Reaction score 121 Location colombia First Name craig Truck Year 1978 Truck Model K5 Engine Size 383 What is the recommended bore size for a master cylinder on a 78 K5? Disc front, drum rear.
Jul 14, 2021 #2 Doppleganger Full Access Member Joined May 24, 2019 Posts 12,677 Reaction score 58,764 Location OH-MI: Just like it sounds First Name Chris Truck Year 1985 Truck Model K20 Engine Size 5.7 I would say it depends on what size calipers/drums you have.
Jul 15, 2021 #3 Keith Seymore Full Access Member Joined Jul 13, 2015 Posts 2,867 Reaction score 9,123 Location Motor City First Name Keith Seymore Truck Year 1987 Truck Model R10 Engine Size 4.3L 1.125", assuming otherwise stock components. K You must be registered for see images attach