Here's the thread about Quartermaster clutches: http://www.realfierotech.com/viewtopic.php?f=3&t=21513
In terms of designing the parts required and adapting to the various transmissions, a whole lot of this info is going to be common to both. They use the same bolt circle to mount to the flywheel, for example. The throw out loads and travel will be similar, as will the set up heights, so the adaptations to the throw out mechanism to get it to work with double the stock throw out load will apply to both.
Here's a quick model of a matching flywheel with the Northstar crank pattern, sized for the 282.
I will need to update the counterbores for actual measurements, since they're currently ISO standard--which means socket caps, I think.
I'm going to grab one of these: https://www.summitracing.com/parts/atp-z253
The OD of the puck is 8.400. I'll hollow out the flexplate to 8.400 and weld it to the perimeter of the puck. That cut should be somewhere in the diametral range covered by the speed holes, which will simplify the welding.
Once figured out, this basic technique would work for any application using the 282.
For the F23, the deeper bellhousing means that, with a little profiling of the back surface of the puck, the same puck could bolt down on top of the flexplate with room to spare. However, the flexplate would be specific to the ENGINE and not all have the same profile. The first few new engine cases will be blazing trails figuring out. The flexplate linked from Summit above would work with any internally balanced V6/60, Q4/2.4 or Iron Duck apps with the F23.
I have the design for a mechanical throw out bearing carrier for a 282 in my head, I just need to go back over the numbers and build the model.
However, for HTOB 282, F23 and F40, I may have to get a little creative in developing HTOB adapters in order either to use a Tilton or QM HTOB assembly complete or to adapt a round faced mechanical throw out bearing to the production HTOBs for those transmissions.
I'll wait until somebody asks about the Muncie to design the mechanical TOB holder for it. Its bellhousing is only a tiny bit deeper than the 282's, so the same flywheel will work for both.
Since the throw out load is higher and the throw out distance is shorter, a smaller diameter MC for the HTOBs will probably be required.
Wilwood has a couple of models with 1/2" bores:
https://www.wilwood.com/MasterCylinders ... =260-15088
ETA:
The original Fiero MC has an 11/16" bore. A 1/2" bore unit has 53% of the piston area, which means that if the Fiero MC is basically right with the stock style clutch, then a clutch with double the throw out load and half the throw out travel will keep approximately the same pedal load with the 1/2" MC.
This even looks like the Fiero type 1 MC
Or maybe this one in extremis:
https://www.wilwood.com/MasterCylinders ... 20Cylinder
