503? 707??? Geeeez that's some cubes there! I've been thinkin if I were to upgrade my engine in the dump I'd go for a 302 since there's a some good performance parts out there. 302 seemed more common than my 270 was.
ANYway,... I can see a 2-something hundred cubic inch engine moving that much steel, no problem at all. Stopping might be fun tho!
It's not the size of the engine that matters so much as the gears. Seemed like back in the bad 'ol days ya have two choices, payload or speed, but ya cant have both!
