276 stroker from 35 years of parts

[GB SISSON]

Originally Posted by cadillac512

I made a slug that fit in the centers with both flywheels together. Then drilled the early wheel's bolt holes all the way through. Set on top of the 8BA wheel, transfer punch marked the holes, drilled pilot holes then proper holes to tap 5/16-18. Tapped the holes in the drill press by hand. Works great in the Merc with 10" clutch. But hey...you're probably done with yours by now!

He left about a half hour ago. He turned I pilot that fit my pilot bearing, we did a bunch of measuring and decided to go from the ID of the heavy clamping plate so turned a disc about 6" and machined to be snug in the interior of the plate. He had transfer punches and center drill. I NEED both! All holes line up perfectly in the speedway assembly in all three positions. Since it's his day off, I told him to head for home and I'd tap them. He pointed out that it was gonna be easy to start them straight because of the deep counterbore for the shoulder bolts. Upon careful inspection after he left, I could not be happier with the results. And yes, 8ba flywheels are drilled through. YAY!