What is your final drive ratio?
Ask your builder as to whether he included the following:
- Transgo HD2 kit or equivalent (can include his own mods to more or less replicate what the HD2 kit does and then some)
- Sonnax 4L60E-LB1 boost valve and spring kit
- Sonnax Smart shell
- High Energy clutches throughout the transmission, except for possibly the 3-4 clutch where he may have used Alto Reds, Raybestos Blues or similar along with Kolene coated or lindered flat steels
- Alto Power Pack for the 3-4 clutch (clearance .025-.035, load release springs installed)
- High Rate Return Springs
- Wide 2-4 Band (Alto)
- 2003+ rollerized reaction shaft
- 4L65E Front and rear 5-pinion plantaries (note that these are not mandatory for anything under 500HP)
- All new OEM or Rostra solenoids/harness
Check out my 4L60E Playlist for a comprehensive look at building a high performance 4L60E
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