quote Originally posted by Fierobsessed: I've had some compatibility problems with cases, my 94 Quad 4 W41 transmission did NOT have the bosses on the rear of the transmission for the select cable However, the case half I got from a 91 Q4 HO had them, go figure.

Can you see them on the pic of the trans I posted?? I don't have a Fiero trans to compare the case to

quote Originally posted by Erik:

Sorry for the late response but,
Yes, they are the two bolt holes to the left near the steel plate
My quad 4 trans that had the bolt holes did NOT have them tapped however.
they are metric 8-1.25

Speaking of which, Where the heck is the bolt holes for the slave on that transmission??? I don't see them, and that is wierd.

[This message has been edited by Fierobsessed (edited 04-17-2008).]

There are a LOT of differences over the years, especially with the shift assemblies. Later ones have revised (stronger) shift forks, and some have nylon-tipped machined-steel shift arms. The gear-side of the case is different in some of them too. The later shift setup doesnt use the same shift stop as the early ones. I don't know if they are interchangeable or not. If the shift shaft is still the same you can just swap that and not have to touch anything.
MOST of it is interchangeable but watch out with things like the bearing races on the input and output shafts. They moved the oiling holes over the years, and if you put the wrong races on the wrong shafts you will have zero oiling because the holes will be covered.

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1988 Pontiac Fiero 3.4 DOHC V6 5-speed
California Smog Legal!

quote Originally posted by Steven Snyder: You sure about that? The Fiero one sure looks like it sticks out a lot further than the FWD ones.. Rodney's shift arm has a lot deeper step to it to make it work..

Dammit, now I'll have to go look.

My dad and I made a lowest common denominator part to use the stock Fiero linkage on a FWD trans... we had the ring that the select linkage manipulates welded to one of the slotted washers that stacks under the nut that holds the shift lever on... but I don't remember if it was pinned lower or what...

quote Originally posted by Steven Snyder: What's the hole for next to the shift assembly?

Back up light switch

quote Originally posted by Fierobsessed: Speaking of which, Where the heck is the bolt holes for the slave on that transmission??? I don't see them, and that is wierd.

That looks like a hydraulic throwout bearing version, so no holes are needed for the slave. A pic of the other side would confirm.

quote Originally posted by fieroguru: That looks like a hydraulic throwout bearing version, so no holes are needed for the slave. A pic of the other side would confirm.

It is ...there is no input shaft sleeve

quote Originally posted by Erik: It is ...there is no input shaft sleeve

Oh interesting.. The front input shaft bearing from the early GETRAGs uses a formed sheet metal outer race (!!!!) and I've only ever found one that didn't have play in it. I wonder if the one for that tranny, which doesn't need the sheet metal TOB sleeve, would have a better bearing? If so, I could simply make a bolt on sleeve, and use that input shaft bearing...
Does anyone know where to find the part number for that bearing? I'm very much interested!

quote Originally posted by Steven Snyder: Oh interesting.. The front input shaft bearing from the early GETRAGs uses a formed sheet metal outer race (!!!!) and I've only ever found one that didn't have play in it. I wonder if the one for that tranny, which doesn't need the sheet metal TOB sleeve, would have a better bearing? If so, I could simply make a bolt on sleeve, and use that input shaft bearing... Does anyone know where to find the part number for that bearing? I'm very much interested!

The hydraulic throwout input bearings are still formed with a sheet metal race and is pressed in from the bellhousing side of the case (had one walk out of the case about 1/4" and make a hell of a mess).

A word of caution with these hydraulic throwout bearing trannys... the throwout bearing is recessed into the case and there is a shaft boss (I think a shift shaft) that becomes a surface mounted plastic cup and a shorter shaft vs. a recessed machined boss/longer shaft. I had wanted to swap an 89 FWD getrag bell housing side with the bellhousing side from the hydraulic throwout bearing tranny (after the input bearing walked out) and noticed this difference in the bellhousing side of the two cases (didn't take any pics).

[This message has been edited by fieroguru (edited 04-18-2008).]

So, a tranny newbie here, I'm in the process of completing my set of HM282 tools (shim selector set, bushing/bearing tool set, assembly pallet). My first project will be to swap over the main clusters from a low mile tranny that's externally damaged and install new diff bearings, but the next project will be to play around with gear ratios a bit. This thread looks to have good info on that front, but before I really start getting my mind around it is it possible to install a taller first gear? That 1-2 shift is killing me and I'd like to go more than 20 feet in first before shifting.

JazzMan

quote Originally posted by JazzMan: So, a tranny newbie here, I'm in the process of completing my set of HM282 tools (shim selector set, bushing/bearing tool set, assembly pallet). My first project will be to swap over the main clusters from a low mile tranny that's externally damaged and install new diff bearings, but the next project will be to play around with gear ratios a bit. This thread looks to have good info on that front, but before I really start getting my mind around it is it possible to install a taller first gear? That 1-2 shift is killing me and I'd like to go more than 20 feet in first before shifting. JazzMan

Yes you can install another 1st but I am assuming you already have the 3.50 1st and IIRC that is as tall as you are going to get unless you have custom gears to install

First and second gear are part of the input shaft. There really isn't anything you can do :-(