Lockup to non-lockup question(s)

For my 67 904 verter to mount up to 340, I needed a spacer/bushing that was approx 1.58 I'd and 1.80 od.
92b said
Is the pilot for the 68 or newer larger or smaller in the crank? I will search it but is there a thread on this that you can point me to? Sorry to anyone if this is hijacking this thread.
Click to expand...