8.3 Cummins performance - Competition Diesel.Com

1972RedNeck · 01-04-2020, 01:06 PM

1994 F800 with a 240 HP 8.3 Cummins. Has a P-pump, 58mm HX40, air to air intercooler, and stock as a rock. Looking to get a little more pep, maybe 325 to 350 HP. This thing weighs between 16K and 20K on an average day hurtling down the road at 70 MPH plus. Occasionally tows 25K behind it.

I think I can get enough fuel as is to get to a solid 325 HP. What do I need to do for air? I presume an S400 frame turbo? It has a T4 foot...

What size turbo would work well? It is a manual so spool up is important (and could use improvement over the stock 18CM housing).

S468? S471? What hot side?

Thanks

56cummins · 01-05-2020, 01:28 PM

Look at the fl60 mutt thread on here, I think he went s366. How about a big turbine s364sxe with a .91 or .83? What is your average rpm range? What is the steady state cruise rpm on the highway?

*Snedge* · 01-05-2020, 04:10 PM

That hx40 might surprise you. Add the fuel and run it. A t4 s366 would my turbo of choice if the exhaust gets too hot.

4x4dually · 01-06-2020, 07:09 AM

IIO. Here for knowledge.

01-05-2020, 01:28 PM	#2
56cummins Name: 56cummins Title: Too Much Time Status: Not Here Join Date: Mar 2014 Member`s Gallery Posts: 736	Look at the fl60 mutt thread on here, I think he went s366. How about a big turbine s364sxe with a .91 or .83? What is your average rpm range? What is the steady state cruise rpm on the highway? __________________ 95 cummins

01-06-2020, 07:09 AM	#4
4x4dually Name: 4x4dually Title: Moderator Status: Not Here Join Date: Jan 2007 Location: Stillwater, OK Member`s Gallery Posts: 31,812	IIO. Here for knowledge. __________________ Jory 2009 4x4 3500 MCLB "There are people far less intelligent than you making a living doing this stuff." - Jeff Mumau

01-05-2020, 04:10 PM	#3
Snedge Name: Snedge Title: Comp Diesel Sponsor Status: Not Here Join Date: Sep 2006 Location: Western Pa. Member`s Gallery Posts: 18,859	That hx40 might surprise you. Add the fuel and run it. A t4 s366 would my turbo of choice if the exhaust gets too hot.