The 194 is a good engine, but it will be a little weaker than the 235 in the torque (load-pulling) department. Putting the 235 back in won't be a bolt-in situation, as several semi-permanent modifications would have been done to make the 194 fit. If you want a little more power, I'd suggest finding a 250 6-cylinder which will bolt right in using the same mounts that fit the 194. If your 235 came with the bellhousing and motor mounts that fit the truck originally, the swap back will be simpler, but still not easy. The 194/250 engines weigh a lot less than a 235.
Jerry
Last edited by Hotrod Lincoln; 01/09/2010 2:33 AM.