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  1. simp5782

    M1070 HET Speed Improvement

    I've ran the Oshkosh 55000 at 80mph at 92,000lbs. I saw 280 degrees. It says not to exceed 330 degrees. It used 40weight HD motor oil so it's got high temp protection. Or add a cooler, I did.
  2. simp5782

    M1070 HET Speed Improvement

    Just use synthetic fluid they will be fine. And don't try to go 65 when towing a M1000 with an abrams on it and it should do just fine. Transfer cases heat up 10x faster than the hubs do.
  3. simp5782

    M1070 HET Speed Improvement

    It has the same final drive as the HET CLT754 so it won't gain any speed
  4. simp5782

    M1070 HET Speed Improvement

    Yes. I have a source for a 7spd Allison 4700 that can handle 600hp. Has harness and all the applicable parts.
  5. simp5782

    M1070 HET Speed Improvement

    Pfft. Stupid questions cost folks $5
  6. simp5782

    M1070 HET Speed Improvement

    You can find a takeout from behind a 60 series detroit with harness and all that. The 916s with the 7spd use a stand alone tcm and a a cable drawn tps for the 4700sp. You could always but a parts truck mtvr and use that transmission and you have spare parts for yours. A guy on here in...
  7. simp5782

    M1070 HET Speed Improvement

    Why does the cat bang and clang? If you swap the vents for the metal bell type the air burst are much quieter. You should only have to shift 3x for normal driving in that 916 from takeoff to max speed. Start in 9th. 11th 13th 15th 16th
  8. simp5782

    M1070 HET Speed Improvement

    It's on the drawing board to do. But with a repower as well. The Allison from a garbage truck is what you want. They used 92 series Cats aren't loud if you put a regulator on them and turn the air pressure down to about 85/90 HET uses an 1810 jackshaft. You will need a trans with an 1810...
  9. simp5782

    M1070 HET Speed Improvement

    Swap to a 7 speed Allison 4560P or a 4700sp with a 6th .74 would give you 16 more mph and a 7th .64 OD would add an additional 27mph. Or a CAT 7155 would give you a 9mph improvement with the .83 OD Cat would be the easiest and cheapest swap Or a Spicer 18 speed. They can be had for around...
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