[weim55]

I don’t know the year to year specifics for flywheels the way some guys on the board would. I never remember having to replace a fly wheel on one of these trucks to install the larger clutches. I’d be willing to bet the flywheels even have the same casting numbers but are drilled differently depending on the original clutch application . Flywheels for the larger clutches are very common so you would have no difficulty finding one. If you want to keep cost down certainly no issue to run the smaller clutch on your 327.

Steve weim55 Colorado