[Super73]

Originally Posted by 68 C-10 KID

My plan is to build a 4L80E so i can run a low gear ratio for track, but have ability to drive to the coast, and show's.

1. Is there a year that i need to look for?
   1998 and earlier have a sbc/bbc patern on the bell housing. 1999+ are gen 3/4 bolt pattern. I'm running a 1993 behind my LS1. All but 1 bolt hole lines up. If you are using an early one with gen3/4 pcm's you may need to change the internal wiring harness and connector like I did.
   
2. Is there a trans brake valve body or is it all mods in the stock one?
   There are a couple companies making a trans brake. your best bet is to search performancetrucks.net for info on them
   
3. Is a performance rebuild kit enough?
   Again Performancetrucks.net would b a good site for this.
   
4. Who would make a low slip converter?
   You could have a silly loose unefficiant converter like I do in it and still have near 100% efficiancy. It's all done with the lock up and PWM percentage. A good aftermarket controller should allow you to do the same I do through a factory PCM.
   
   
5. Who's controller to use?
   Performancetrucks.net
   
6. Is the length the same as th400?
   No it's longer. I could measure mine if you need it.
   
7. What needs to be done for trans cross member?
   Drilling 4 new holes in the fram then welding a piece of plate where the tailshaft mounts and redrilling 1 hole.
   
8. How much is reasonable price to pick one up?
   Mine was $600+ shipping. I know where there is a 4wd built one for sale. But, mine is stock minus the verter.

Thanks for everyone's in put and advise in advance.

Mike

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