cajundragger

iTrader: (2)

I'm going to pick up a box of parts this afternoon with a disassembled 1000 mile stage 2 C6 zo6 trans inside. The seller says it needs a new 2-3 gear cluster. We shall see.

After doing the research and reading quite a bit, I've decided to use these parts and assemble the OEM hybrid that 85MikeTPI has spent so much time telling us about.

I see these corvette transmissions come up so often and so cheap that I really just want to figure out what exactly it takes to turn one into a rwd trans that will handle some good power. Finding this c6 zo6 trans with the 1 piece counter will allow me to build an SSR clone which is exactly what I want.

Plans are to use an OEM SSR tailhousing with the SSR output shaft. I'll mill down the tail to run a car shifter. Also plan to use the SSR 40 count VSS.

I will be looking for a few used OEM parts so if any of you have some, it will be surely appreciated.

I do have a few questions for those who may know...

What shift rail components can I reuse? And which do I need to source? I figured I need the rear lever the shifter ball rides in, but are any of the actual rails the same?

Can I replace the broken gears with good condition used or must I go new?

that's all for now. I'll keep this updated even if there is low interest as this probably won't be my last conversion.

-Dustin

jmd

iTrader: (4)

The main shift rail setup should be copied from a GTO / 4th gen F-body.

Some gear wear at the synchronization teeth is acceptable; generally "breakage" is not. Hard to tell without pics.

What vehicle are you installing this into?

85MikeTPI

iTrader: (9)

I'd be worried about what the seller means by a 2-3 gear cluster since there's no such cluster or 2-3 synchro or ....

Just note also that any gears to replace would need to come from a MM6 base C5 t56 as the Fbody would be incorrect and c5-z06 and GTO gears would have the wrong ratio.

cajundragger

iTrader: (2)

I'll get the pics posted up tomorrow. But 2nd gear is trashed. What he meant by 2-3 cluster is the shaft that 2nd is made into, which I believe is referred to as the counter shaft. Since the gear teeth are gone, the whole shaft is scrap.

I ended up grabbing the parts. Everything looks perfect except the two gears that make up second.

cajundragger

iTrader: (2)

here are the parts. Dont mind the cookie...




I'm missing a set of keys so far I've figured out. Didn't spend too much time looking. He didn't upgrade the keys but the blockers are carbon and the fork pads are brass. The 3rd fork is also aluminum. So I'm not sure I did as good as I had hoped? I guess we will see.

cajundragger

iTrader: (2)

I have several tremec manuals but I'm wondering where can I reference to a tremec or GM part number?

jmd

iTrader: (4)

Although there are a select few items that become dealer-only items for a period of time (SSR tailhousing was 99% dealer only,) if an item is available from a Tremec dealer, that's the place to go for it. $$

Looks like 3rd is all wiped out!

1-2 shift fork is aluminum. The rest on an 06 model are iron.

cajundragger

iTrader: (2)

I need to spend time with the manual and learn which parts are which. I plan to do that this weekend. You are correct, the 1-2 fork is alum. Is moving to steel a good upgrade?

Also, it is 3rd that is wiped, not 2nd.

is the counter shaft avail from tremec direct? what about 3rd gear?

85MikeTPI

iTrader: (9)

There's no steel 1-2 shift fork

From the picture, Matt is correct that it appears that 3rd gear on the cluster is wiped, not 2nd.

Did you get a copy and read the PDF write up of mine that you referenced? It has sources, part numbers, prices, etc.

I hope you got that trans for cheap, because the cluster is the plum of the C6-Z06 and now you have to drop $400 for just the cluster.

cajundragger

iTrader: (2)

I paid less than what the blockers costs for the lot so I think I'll be ok.

I found a guy local that says he has a good used 3rd. So I need to check it out and pick it up.

Is the corvette main shaft desirable to anyone? What are they worth used?

jmd

iTrader: (4)

Used vette mainshafts aren't gold and the 30 spline T56 buyers market is slimmer than most apps. But they do sell with marketing exposure.

Look through Mike's posts where he links to build-ups of the CTS-V converted to GTO setup and his other builds with pics. They're a great reference to identify the right parts in the GM triple/double cone synchro models as you build yours up. Subtle differences between the double cone blocker rings, the inner cone for 3rd vs. the one for 4th. Watch the thickness on the splined washer for 4th (thicker) vs. the ones for 5th/6th.

cajundragger

iTrader: (2)

Cool

So I been studying these parts.

Is there a difference between the inner cone, friction, and blocker for first and second? And fifth and sixth?

I'm not sure what you mean by double one blocker rings?

I did notice the inner cones, frictions, and blockers are different for 3 and 4.

Also seems like the inner external tooth washer for 5,6 are the same and 3-4 are the same.

I found more broken crap. The 1 or 2 ( I think they are the same) blocker is missing teeth.

Does 1-2 and 3-4 forks use the same plastic or brass pads?

How do I tell the difference Between the 5/6 and reverse syncro hub and sleeves?

I guess that's enough for now. I know generally what part is what now which is a huge plus.

cajundragger

iTrader: (2)

The bearing on the front of the main shaft had a bent cage as well... Ever seen this before? The cage is 'dented'...

85MikeTPI

iTrader: (9)

1-2 friction rings are the same side-to-side, as are 5-6.

Double cone synchro rings mean they have 2 friction surfaces (3,4,5,6) compared to the Fbody t56 which only has a single friction surface on those same gears.

Some blocker ring parts are the same between 3/4 and 5/6

Are the teeth broken on the blocker rings or are some missing in a pattern?

Fork pads are the same on 1/2 and 3/4

I want to say the Rev and 5/6 sleeves&hubs are the same, but I'd have to have them in front of me to say for sure. The rev has extra parts (retainer, washer, etc) but the hubs themselves are similar if not the same.

It's not uncommon for the small mainshaft bearing to be worn or damaged and should always be replaced during a rebuild.

cajundragger

iTrader: (2)

The broken blocker is missing teeth for sure. I'll get a pic.

I'll also get a pic of the 5-6 and rev syncro hub and sleeve because one hub has a faint groove and so does one sleeve.

I need to sort out all the spacers and clips next. It may be impossible without putting things together? I'll see what I can do.

jmd

iTrader: (4)

The 1-2 outer cones do break. I just built one with 3 chunks taken out of the 2nd outer ring by the keys. Missing teeth also = replace.

Rev hub and Dodge/F-body/Ford 5-6 hub are the same.
5-6 hub for Vette/GTO/CTS-V/SSR is different; can't be used on Reverse.

I fixed my one/cone typo.

Put 3rd together with this series of pictures:
http://www.eecis.udel.edu/~davis/z28.../index_14.html

etc. etc.

85MikeTPI

iTrader: (9)

I do take an annoying amount of pictures don't I ?

http://www.eecis.udel.edu/~davis/z28/2010/100201_LS7T56
Is the full slideshow from the beginning and documents the entire
Evolution of the first hybrid unit that's in my vette now..

cajundragger

iTrader: (2)

There is another c6 zo6 trans local to me that is a good stock unit. I'm not sure if I should buy it and steal the parts I need from it and attempt to sell the rest or what.

What do you guys think?

jmd

iTrader: (4)

Well, you know roughly what you need for parts, so it could be a good score.
Pop the front cover and see if the countershaft appears okay.

cajundragger

iTrader: (2)

so I think I have it figured out...tell me if I'm right...

rev synrco hub on top with black spacer





flipped over...rev synrco still the top one..



I'm assuming that one to be the rev hub still it is "one sided" and wouldn't be sandwiched between two gears.

my question then this..which hub is for reverse, which for 5-6? one has a faint groove..