Been searching and have not found a post (or a link) to a list with the bolts sizes for an SBC.
Did I miss it somewhere?
Not sure about accuracy, but I collected this info from ThirdGen posts:
Coil Bracket: 5/16-18 x 9/16
Distributor Hold-down: 3/8-16 x 1/2
Fuel Pump: 3/8-16 x 1 1/4
Fuel Pump Plate: 1/4-20 x 1/2
Intake: 3/8-16 x 1
Motor Mounts: 3/8-16 x 3/4
Oil Pan: 1/4-20 x 1/2
5/16-18 x 9/16
Oil pump: 7/16-14 x 2.25
Timing cover: 1/4-20 x 1/2
Valve Covers (perimeter): 1/4-20 x 1/2
Water Neck: 3/8-16 x 1
3/8-16 x 2
Water Pump: 3/8-16 x 2
3/8-16 x 2 1/2
Cam bolts: 5/16-18 x 3/4
Harmonic damper: 7/16-20 x 2.25
Header bolts: 3/8-16 x 3/4