Advice 1986 W900 with (white) 3406b

It's an old 1986 truck that come from a fence row. Not really worth more than scrap to most people. Build whatever you want and be happy with it.

 

White CATs were a Paccar thing IIRC. Just something they did back then. Its not like it really adds any value to a truck.

 

Was at an Army Depot around Desert Storm time loading rubber water tanks.
The building next door was wall to wall with white CAT motors In the thousands.

 

Don’t ask me to logically give you proof because I can not But I’am a firm believer that a genuine white Cat is a better motor There’s a old saying the difference between a white Cat and a yellow cat is you can make a white cat run .That said I have seen a lot of yellow cats painted white at some point So a guy needs to do his research before he brags about owning a white cat

 

I haven't heard that before. My 1980 has one and the previous owner from about 30 years ago said it pulled really good back when he owned it. I ran the engine S/N in SIS and its likely the original block in that truck. It was shipped to the KW plant in Burnaby, BC in the late 70s.

 

When I started going on the truck in 83 Used to hear the debates about yellow or white Cats then by 86 use to hear the good wrenchs that seemed to know their stuff would say you could make a white cat run I have own both and I would have to agree the white cats would perform better JMO I have a 7fb sitting in the shop that is originally a white cat that someone painted yellow it’s pretty strong

 

I say put the pre egr 14L series 60 Detroit in it if that’s what your gut is telling you. If you’re going to work it and also have it as a daily driver, you could also consider a hopped up 12.7 series 60.

Other mods, if you’re tall, put in the big hole sleeper. So much more leg room.

Keep us posted on your progress. Best of luck to you.