As my balancer warms up for the install, I did some searching and now I have a question or two.

If I tap the Crankshaft, what bolt size and thread count should I shoot for? I have not owned a V anything in years, so I have no idea the bolt size of a SBC. I also want to make sure I have the tap.

And what size drill bit for the hole that will be tapped?

Thanks for the info.

69 chevy C-10-250, 3x1, offy, t-5 family owned
87 Toyota-4Runner 22REC
87 18'Invader-Volvo AQ131C/275A