Bret (OH) - 1/18/2008 11:08

Car 390 won't work in a heavy truck without lots of changes. None of the accessories (brackets) on front of engine will interchange. Snout of crank is larger on a truck. Water pump is different. Front cover is different, ect. ect. Your right though Brassring, IMO the 391 would be a better engine, but probably wouldn't be worth all the changes needed to get the FE motor into the truck in the place of the 385 series that's there now. The 385 can be made to run if one really needed to, just costs some $$.[/QUOTE


Just to ad that car/ pickup 360 /390 will not balance with a truck 361/391 flywheel. Car/pickup 360/390 is internal balance, truck 361/391 is external balance. BTDT shakes like heck.

Also, Car/pickup 460 has a smaller hole in the crank where the pilot bushing/bearing fits (small block size) while the 429 car/pickup engines have a larger pilot bushing/bearing hole (FE 390 size), so may or may not be a problem, depending if the big truck pilot bearing fits in the crank or flywheel.