Originally posted by moparmarks
I believe that chart is for the 143T wheel which was used in trucks starting in 1972 while the 360 car 4-spd with the 130T wheel wasn't available until 1974.
It is possible, but if it's possible (and it is) to drill to the same pattern as the 130-tooth flywheel it will (must) achieve the balance required.
Originally posted by dvw
[B]I think you are looking with the flywheel pressure plate side up. Flip the flywheel over and look from the crank face side. That's where the diagram is drawn.
The drawing says to be looking from the 'engine side' of the flywheel, so that's what I am doing.
Originally posted by moparx
[b]as a machinist, what bothers me, there is no mention of what angle the drill is sharpened to.
135°? 118°? 90°? something else?
Yes, a good point... I am pretty sure, however, that one of the diagrams I've seen was accompanied by a note saying 120°. I will be checking what my drill is, but it's a new and unused drill so I'd expect it to be right.
