The Buick,Olds,Pontiac 455's made over 500 ft/lbs of torque stone stock. The Cadillac 472 and 500 engines made slightly more,but all of 'em are naturals for trucks.(The Caddy would need the end of the crank drilled for a pilot bushing if you want to use a manual transmission in it.)
Speed


1954 GMC 350
1957 GMC 1/2 ton
1962 Chevy C-30
1952 Chevy 6400 dump bed project truck
'98 Harley FLSTC
'66 Pontiac Catalina
'76 Chevy 1 ton Duallie
'84 Bronco II
'78 Dodge W-200
'81 Toyota 4X4 truck