Join Date: Apr 2006
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International Gt37 Turbo Upgrade
Im new to this site but Tony Wildman said it was a good one to go too.
I'm running a 97 F350 Crewcab 4x4 5 Speed powerstroke. It pulls a 47 ft tripple tandom dually axel flatbed. This trailer by itself was 7700 lbs. My truck even with a 99 intercooler, banks level 4 big hoss chip, upgraded custom exhaust, the 1.0 housing, gutted ebpv, and open intake couldn't pull this trailer with combined weight of 26,000 over 63 mph at 6,000 feet of elevation with the pyro touching 1200 degrees post turbo. Something had to be done
Over on "thedieselstop" they said that the turbo offered on the 230hp 94-97 international T444E wouldn't work on our pickups. It is a Gt37 none variable vain turbo but is the same compressor housing on the newer 6.0Ls. It directly bolts on with their pedistal and uppipes but a custom downpipe must be made and a intercooler or custom intake to engine must be present.
With this newer turbo with still only stock injectors i can now pull 37,000 lbs with no more than 850 degrees in 5th with the ac on at 75 to 80 mph. I did upgrade to Tony's chip but everything else was left alone. I do have pics but will be up later. The Turbine housing is 1.11 ar and a 3.5" exit. The turbo only builds 20psi but it has 12 at 1700 rpms. I think I don't have enough exhaust pressure to really make this turbo shine. I'm upgrading my injectors to 180cc with the upgraded nozzels to see what happens.
Has anyone else made this upgrade? It bairly fit under my firewall but its in there. But my opinion it makes my truck pull just as good as the new 6.0L but I get better MPG. Even Tony W. got to drive it when I picked up my chip from him in his home town. He said "that it was a one of the fastest spooling turbo's he's seen on a 7.3."
Thanks and I'll try to get the pics up
Let me know if anyone else has done this.