Stock power/light tow or Mild tunes and bolt ons → StreetMonster. Hotter tunes/frequent heavy tow → SportMonster. Big power/competition → TrackMonster.
Yes. All Transmissions come with a Converter. (multi-disc options on Sport/Track).
Yes. Perform a Quick Learn (and clear adaptives) with a capable scan tool, then follow the drive cycle to seat adaptives.
Flush/replace the cooler & lines. Use fresh ATF+4 and verify no restrictions.
Listed per tier; included Extend warranty can bring coverage up to a total of 6 years on transmissions.
*Real-world tow weight, axle ratio, tire size, and tuning influence build selection.
Jump to: Hydraulic issues • TCC & heat • Cooling setup • Install checklist • Quick Learn
The 68RFE’s OE calibration and separator plate design can allow clutch overlap and flare—especially when tire size, weight, or tune increase torque demand. Our Street/Sport/Track tiers address this with valve body updates, line pressure strategy, and increased clutch count so the unit maintains apply capacity without excessive slip.
Diesel torque + tow loads punish the torque converter clutch. We pair the transmission with a matched converter (single → multi-disc depending on tier) to reduce TCC slip, improve lockup control, and keep temps in check during sustained grades and highway pulls.
Use fresh ATF+4, verify cooler path is unrestricted, and add a low-pressure-drop external cooler for heavy tow. Consider a deep pan for extra capacity and better heat rejection. Fresh lines/flush eliminates debris that can quickly contaminate a new build.
With a capable scan tool, perform Quick Learn at normal operating temp on level ground, then complete a light-throttle drive cycle progressing through each gear and coastdowns. This prevents harshness and protects fresh clutches.
ATF+4 only. Capacity varies by pan/converter; after a rebuild with deep pan expect ~13–17 quarts. Always fill per dipstick at temperature.
Tow/Haul raises line pressure and adjusts shift timing to reduce slip during load—use it when towing or in hilly terrain.
Yes—effective load and speed readings change. Correct the calibration where possible and choose a higher-tier build for added margin.
Often hydraulic overlap, worn clutch packs, or low line pressure. Our builds address these with valve body updates and clutch capacity.
No. Proper Quick Learn + drive cycle is mandatory. Tuning can complement heavy-tow setups but isn’t required for our matched builds.
Extra fluid + finned aluminum can drop temps and slow thermal rise on long grades. It’s a smart add-on for towing.
We strongly recommend flushing; if flow is questionable, replace and/or add a low-pressure-drop external cooler.
Daily/tow with mild tune → Street. Heavy tow or tuned frequently → Sport. Big power or competition → Track.
Reduce temps on long drives and heavy tow. OEM Fit.
CoolingDirect, bolt-in replacement, Great for racing, towing or stock!
CapacityStart fresh after install; verify level warm, in neutral.
FluidProtect the engine from grid-heater hardware failure.
Engine Safety