Hi all — working through a resto-mod build on a 1964 Catalina 2+2 convertible that’s been sitting about 10 years. Doing most of the labor myself as a novice, going disc brakes/EFI/modern wiring while keeping the classic look. Car specs: 389 bored to 400ci, automatic (confirmed Roto Hydra-Matic “Slim Jim” via the P-R-N-D-S-L shift pattern), factory power steering and A/C, solid frame/no rust, currently on factory 8-lug wheels.
Trying to nail down a few things before I start ordering parts and want to get them all out in one post rather than trickle them in. Any help appreciated:
1. Torus/converter drain — does the Roto Hydra-Matic (Slim Jim) have a separate drain plug for the torus/fluid coupling, accessible behind the flywheel housing, distinct from the pan drain? I’ve found conflicting info online (some sources say no torque converter at all, others describe an internal fluid coupling that functions like one) and want to know if I’m missing a fluid volume when I service the pan.
2. Rear axle bolt pattern — switching the front to 5-lug (5x4.75”) for a disc brake conversion and need to confirm what the rear axle bolt pattern actually is on a 1964 full-size Catalina. Is it the same 5x4.75”, a 5x5” pattern, or does it share the front’s 8-lug-specific design? Want to confirm before ordering wheels.
3. 8-lug to 5-lug hub question — for anyone who’s done this exact conversion: did your front disc brake kit (Master Power Brakes Legend Series, specifically) come with new 5-lug hubs, or did you have to source those separately? Trying to confirm before I call them directly.
4. Alternator bracket fit — anyone running a Powermaster 1-wire 100+ amp alternator (10SI case, part 17294) on a 1964 specifically? Seeing conflicting info on whether the mounting bracket is correct for 1964 vs. only 1965+.
5. Positraction (Safe-T-Track) ID — what does the actual tag/stamping look like and where exactly is it on the differential cover for a 1964 Catalina? Want to know what I’m looking for before I’m under the car.
6. Distributor gear material — anyone confirm cast iron vs. steel distributor gear on a stock (non-aftermarket-cam) 1964 389/400? Planning to run a Holley HyperSpark distributor (cast gear) and want to confirm this matches a factory cam.
Thanks in advance — happy to share more details on the build if helpful, and will post progress as this moves along.