Sweet71

iTrader: (10)

Im just going through my 80E and putting my Trinity Trans brake in and had a few questions:

What is a good clearance for the clutch packs?

I want to convert the direct drive to a 6 pack instead of a 5 pack, does anybody have a part number or what thickness of clutches and steels i need to achive this? Any other good tips or tricks would be appreciated as well.

Thanks

WE TODD DID

iTrader: (2)

Get rid of the wave plate in the direct drum, and set the clearance to .055-.060 with 6 frictions. Check the clearance dry. You can soak the frictions after you get your correct clearance set. Set the intermediate to .035-.040 dry as well. I would suggest leaving the wave plate in the intermediate to take strain off of the case lugs, which are known for breaking.

If you use the molded piston in the directs, 6 4L80 high energy frictions, and 6 4L80 forward (thin) steels should get you close to your desired clearance. Don't forget to remove the center seal in the drum.

For the intermediates, use 4 4L80 high energy frictions, and a combination of 4L80 and th400 steels. I don't remember off the top of my head how many of each. I would get 3 of each, so you'll have enough for the correct combination.

You can set the forward drum up a little tighter if desired, for it is applied all of the time. Being that it is obviously a race transmission, get rid of the wave plate in that drum as well. Use a combination of fwd and direct steels to get your desired clearance. 5 or 6 frictions, either one, will be fine.

Put a th350 pump bearing in the bottom of the case and set the end play with th350 pump shims on the tight side. .005 is what I like to shoot for.

Let me know if you have any other detailed questions about the build.

Sweet71

iTrader: (10)

Awesome, thanks for the help, I will P.M. you if I have anymore questions

forcd ind

iTrader: (7)

i have a question on the center seal in the direct drum, i know guys leave it out, but if its the molded piston, do you cut it out, since its molded?
if so, cut it back to the steel?-thanks
does it make it apply quicker

WE TODD DID

iTrader: (2)

You don't do anything to the molded piston. There is a seal attached to the center of the drum, under the piston that you discard.

jakeshoe

iTrader: (14)

Leaving the center seal out of the direct drum is part of the dual feed modification but it's only half of it. You have created a pressure leak in 3rd gear by doing so, so how do you fix it?

jakeshoe

iTrader: (14)

Good luck with the Trinity trans-brake.
Myself and two other professional builders couldn't get it to work without severe delay going into reverse and the resulting burnt up band and direct frictions.

I just rebuilt a Tech member's 80E that had one in it as well.

WE TODD DID

iTrader: (2)

So, trinity doesn't dual feed the directs with their valve body/separator plate? Interesting.

slow67

iTrader: (2)

No, and he was referring to seperate issues.

WE TODD DID

iTrader: (2)

That being the case, I refrain to the OP of removing the center seal in the drum at this point. You should discuss with the valve body manufacturer on how they recommend dual feeding the direct clutches, if it isn't done through the v/b and spacer plate assy.

jakeshoe

iTrader: (14)

Trinity does have you leave off the center seal in the drum to dual feed, their plate takes care of the other half but when doing the dual feed mod on a 4L80E otherwise you need do more than just lave off the seal, otherwise you are shooting yourself in the foot.

Sweet71

iTrader: (10)

So far everything has gone smooth, I have not tested it yet but I am confedent with their product.

jakeshoe

iTrader: (14)

Well since you are confident in their product, be sure you let us know how well that works out for you.

Sweet71

iTrader: (10)

Dont worry, I will