So it looks like my 60 yo butt may get a job again, after 2 years. Quick lowdown; 70 Duster 340, purple 234, .484 cam, pistons .017 out, ld4b, 727 reverse manual with 3500 stall. Hasn't left jackstands since work started in 1987, 10 pt cage.
So back then, I put in a narrowed Dana spool, 4.88. 4...