My '65 Ford Truck shop manual shows that the 401, 477 and 534 Super Duty engines were available in some trucks. My '65 F-350 currently has a 360 (originally a 352).
Does anyone know if a 477 or 534 will bolt up to the same bellhousing (NP 435 trans)? I've never seen one of these engines, will it fit in the frame?

 

I've seen a 534 Ford and it's a monster! IF it would fit in the frame rails and under the hood, you'd have to beef up the suspension to handle the extra weight. Also, these motors were built for torque and nothing else. They have low compression and relatively small valves. Your tranny will not bolt up-these trucks(F600 and up)used Spicer and Dana heavy duty transmissions, I beleive. Getting one of those to fit under your truck would be next to impossible, I'd think. If you're looking for more torque, build a 390, 428, 429, or 460. All are good motors, and they will fit in your truck!

 

Get it? there's nothing here to look at.