Don't bother using synthetic, especially in this engine. Just use a good 10W30. Your truck probably did not have a factory fan shroud, other than maybe a little wing on the top of the radiator.

If you're wanting to use original rad hoses and everything for it, go to a decent parts store (like Napa), and they should be able to pull all the numbers for you and have the parts quickly if they're not in stock (you may be surprised).


1946 GMC Pickup - S-10 Frame, 455 Buick, TH400, original patina.

My 46 GMC on Photobucket