Engine/Transmission (1998.5 - 2002) F-650/cummins motor

[Kerm]

I am not really shure which forum I need to be in but I think that the new truck I bought has a ISB motor which is a 12 valve right? It is rated @ 225 or 235hp. It is in a brand new(05) 8yard dump f-650 I bought with a 7speed spicer transmission. I wanted to do a little work to the engine. I was gonna start with downpipe(the one on this thing I swear goes down to 2. 5") and freeing up the exhaust. How else can I make some good reliable HP. Wish I new more about the early cummins motors! Thanks in advance!!!!

 

[SnoKing]

What year is it? ISB is the 24V engine that started in the pickups mid year 1998. Before that they were the 12V. 12V have a valve cover for each cylinder, 24 have a single cover over all the valves. SNOKING

 

[Kerm]

She is a brand new 05 f-650.

 

[JimKing]

The 650 was available with 185,205 and 225 HP ISB (24 valve) 5,6 and 7 speed. Late production also had the new Holset variable turbo. Exhaust is 3".



You might want to read your warrany manual before making any kind of modification.

 

[SharpMotors]

f-650

i have a 2004 f-650 with the isb 24 valve and a allison trans mine was custom orderd from california so it came with the egr set up. it is 215hp with 520 torque. i installed a 4 inch down pipe into 6 inch stacks and a set of 100hp edms now im just waiting to pick a turbo.