Posted by The tractor vet on March 02, 2021 at 06:59:50 from (104.179.81.68):
In Reply to: Transmission temp posted by rrman61 on March 01, 2021 at 20:46:10:
Back when i had two pick ups with automatic's i installed temp gauges in the pans . The first one was in my 73 F250 that had a few up grades , first was the 360 V8 got pulled and in went a 428 S/CJ then the C6 got reworked and built pressures were increaed stiff firmer shifts and a slight up grade to stall speed Normal driving under 60 Mph with 4.10 gears she would run around 170 on a Stewart and Warner mech gauge , this was with and external and internal coolers . Push it on up to 70 and temps would go up to the 190 range , add a tri axle trailer with load in our humps and bumps it was not un common to see 210 -220 . When plowing heavy snow you could see 240-250 . And due to this you could count on the forward clutch pac failure due to it taking 100 % of the abuse from forward and rev even with 6 disc and plates in that clutch pac. it would take the teeth off the disc. The 78 F250 that started life as a gut less 400 ate five transmissions in four months due to a screw up from the factory as Ford had cheapened up the C6 so bad and someone left out one disc in assembly . when i did the trans myself that is when i found the missing disc and set out to build anothe heavy duty trans from old stock parts i had on hand . The 400 gave way to a 460 and the C6 got built with all three clutch packs with 6 fiber and 6 steel and valve body upgrades . this one also had the exter. and internal coolers and the 4.10 gears and the temps ran close to what the 73 ran and like the 73 i got five years out of that trans before ft clutch failure . I had two pressure gauge and the temp gauges on them .
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