lt170chevelle

iTrader: (2)

OK heres the deal. Rebuilt my tranny a few months back with alto clutches and have every billet piston and servo in the tranny. I was pretty hard on it on the way home.Came to an intersection went to give it some gas and just revved like in neutral. So i went through all the gears to see what all was there.Only reverse...luckily i was only 10 houses down from my house so i turned around and drove in reverse home.lol
So anyways, what are some possibilities that might be the culprit of loss of forward drive?

performabuilt2

sounds like the forward sprag broke

performabuilt

iTrader: (25)

Actually with no forward gears at all I would say either failure of the forward clutch and overun clutch or possible a broken out put shaft in any case definatley internal

lt170chevelle

iTrader: (2)

dam ok thanks. I was really hoping this tranny was going to make it till next income tax and get one of your transmissions. Oh well.. guess i will have to tear this one down again..ugh

lt170chevelle

iTrader: (2)

Speaking of, if the output shaft was broke, how would it go in reverse with no noise? And if the new overrun and forward clutches did go, what would cause that? Cracked piston maybe?
Another thing is the teflon orings on the output shaft, would they cause any related problems?They were the only thing that i didnt replace on account of not having the resizing tool.

performabuilt2

as long as the seals were not damaged they should have been ok its hard to say what failed and the reasonfor it untill you getit apartand see what happened

lt170chevelle

iTrader: (2)

ok update. Tore it down just now and the forward spag assy. is in peices and the overun clutches are coned really bad with next to no clutch material left.This was just a quick inspection but seems to be the failure point. Now where do i go from here?What would caus this?Just weak stock parts or did i overlook something when i rebuilt it 4 months ago?

lt170chevelle

iTrader: (2)

Im going to go through it again and put the better dual cage bearing in it.I think this time around im going to put a new vb plate in.
What all do the trans go plates have done to them?

lt170chevelle

iTrader: (2)

oh and also the beast sunshell for safe measure.
After this i think my only other weak points would be the input shaft and drum.
So what about those vb plates? I have read up on the 3rd feed hole being a little small for higher hp...

performabuilt2

drill it out to around .096

lt170chevelle

iTrader: (2)

So that gives more pressure, or volume rather, to the 3-4 clutches right?

performabuilt2

volume...if you get and HD2 kit it will walk you through all you need to know I started using the HD2 kit on my personal builds about 1 year ago switched fro mthe superior kits and i love the hd2 its a no brainer....

lt170chevelle

iTrader: (2)

Well i was going to go with just a seperator plate.What else would come with the kit?I already have some stiffer accumulator springs.

lt170chevelle

iTrader: (2)

What else comes in the kit that i would need?