95 KW W900 3406C 8PN fuel timing

Hello,

I am seriously interested in a 95 KW W900. It has a rebuilt engine that is full mechanical. I am not familiar with CATS at all I have had several BIG Cams over the years and never had any issues with them except I learned the hard way about a complete ####### child engine the dreaded 315HP 838cpl that was pretty limited to adding much long term reliable power so I never touched it. It was always reliable and ran fine as long as you were keeping pace with a non turbo 7.3 Ford…The 7.3 would probably still pull away from it, I also had a non turbo 7.3 back when…Had other Big Cams that would run so strong you really had to stay on top of shifting if you wanted to push them even when loaded. I have been searching for as much information as possible and what I have learned is that overall it is a great engine and the last run of the 3406C full mechanical engines except for the fuel timing is horrible? On the engine tag it says Fuel Timing 9.5 BTC. OEM #starts with 39x40a…It is a 425HP engine set at 1900 RPM. The questions I have is this something I should stay away from or get it and then have the fuel timing set to where it will run strong and be reliable? What should the timing be set at? Is it fairly simple to adjust the fuel timing or is that something that i need to find someone that is close in age with me that knows CATS to set it? Also what should the oil pressure be running at operating temperature at idle if the engine supposedly has around 150K miles since rebuilding? I will be the only driver of this truck as always…Thanks in advance for all of your help and support. I have learned a ton reading on here and have also been entertained by some of the yahoos..

 

Am I posting this in the wrong thread? Thanks

 

Wore Out:
I really appreciate your honesty and knowledge. It sounds to me it is almost identical to the one off short run of the Big Cam I had in the past the 315HP cpl 838. I didn’t know any better at the time yet I soon found out the hard way that it was also very limited to what you could do without basically doing a complete out of frame rework essentially just reusing the block, crank , heads. And replacing everything else to have the correct combination of pistons, turbo, injectors, pump, etc…Essentially changing everything else. I completely understand about having all the right components. Thanks again for helping not just me yet my family also as I’m a one man band over here and looking not to make any mistakes that will cost me and my family down the road. Much appreciated.

 

Hey Bud, I just ran across another old 3406C mechanical that I need your help with. It’s in a 1995 truck. Really nice and clean. What are your thoughts about getting a lil more reliable power out of it and how much would you go to? Also would you be concerned about the sleeves or anything else due to its age? Supposedly it is all original and never been opened up for anything.??? Thanks again for your help with these Cat motors. I know there are some great ones out there I just want to at least start out with one of them and not one that is not the best to start with. I’ve been down that road with the one Big Cam I had.

serial # 3ZJ61179
Rated HP 350 @ 1800
Fuel timing 11.0 BTC
OEM# 39x40a23ps1g06