40-50 pounds at most? Maybe for whatever tranny was in a '41, but the SM 420 that came in a '53 is closer to 135 lbs.

Your best bet is to use a hydraulic engine hoist with the arm.

"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.