Exactly what the title says i'm wondering is the grand prix 5spd will fit or well mount to the same spots as the regular tranny's in the fiero ..would really like to know if anyone could help ...thanks alot

matt

Yes it will fit. It's been done. Mounts may be different, though. And the clutch setup is totally different, so it's not a direct bolt in swap, but it can be done.

hmm mounts are different ..that was waht i thought ..hmm but how difficult ..anyone know of any threads? any experts here?
thanks
matt

bump for the weekenders

I belive Rodney Dickman sells all the parts that you need for the conversion. I will try and find the link but he has all the parts and a guid available to do the swap. -Zack-

Oops, 284 /= 282.

--Allen

[This message has been edited by mcaanda (edited 10-15-2005).]

thanks alot guys ..so i need all those parts on that page eh ..i guess its not that bad ...any other links too..thanks again

matt

the getrag 284 may be FWD but its totally different than that of the parts that rodney sells, Rodney sells parts for the FWD getrag 282's the 284 will have to have custom mounts, custom clutch hydrolics (its a pull clutch and the fiero is a push design type clutch system (or maybe thats backwards) ) the shift cables will have to be custom as well, and clutch options are not as plentyful.

getrag 284's are also VERY VERY rare (i have one in my 91 GTP) and cannot be rebuilt at any transmission shops.

matthew

Matthew's right. The Fiero uses a version of the 282, and Rodney's brackets allow you to use a regular FWD 282 instead of a Fiero-specific 282. It has nothing to do with the 284.

How hard is it to mount a 284? Depends on how good you are. It's easy if you're great with a plasma cutter and a torch, not to mention making custom hydraulics. No one makes a kit, to my knowledge, so you'll have to custom fabricate everything.

ACE used to install 284s in Fieros with some of their engine swaps, but they have gone out of business.
You can buy a rebuilt 284 for around $2500.

[This message has been edited by Formula88 (edited 10-15-2005).]

http://rodneydickman.com/retail.html

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4.9 under construction... To lay the smack down on any mid 80s truck that stands in my way. :)

bump for this week

bump

Some pics of a 284, maybe they will help. The first ones are a 284 from a 1992 Lumina Z34 5-speed and the last ones are the cable ger selectors in each gear position in the normal FWD setup in a 1992 Lumina Z34 5-speed.

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"What would you do if I came over to your bedroom every morning, stuch a vacuum hose on your wife's nipple, and turned the Hoover on? Huh? Huh?"

Not sure where fiero308 is hiding at the moment, so I hope he doesn't mind me posting a link to his build thread on our local forum...

Click here for his build thread where you can see what he did regarding mounting the 284 and a DOHC in the pre-88 cradle, as well as his solution for the shifter linkage & cables. If the link doesn't take you directly to it, start with page 11.

Hope this helps!

I'm in the midst of doing a 3.4 dohc/Getrag 284 swap into a 1988 Fiero cradle. Here are the issues:
1) Engine/transaxle mounts.
Use an '88 engine mounting bracket. It fits the 3.4 dohc engine and both style cradles.
The front transaxle mount is a tight fit (Might require a little bending,) but it is stock.
The rear transaxle mount was fabricated from stock parts (The bracket needed widening on the trans side.)
Go to dohcfiero.com for more info.

2) Clutch Kit (Pull-Type.)
Use the GM-10 or equivalent. I used the Perfection Clutch Kit made by Zoom from Advanced Auto for about $186. If it worked well on a big ole Monte Carlo with humongous wheels and tires, it should be allright on a Fiero. I used a stock 3.4 DOHC flywheel, but an aluminum flywheel is a nice, if not expensive, upgrade.

3) Clutch Hydralics.
You must use the stock 284 slave, but the stock Fiero master cylinder works fine (Eliminate the accumulator.) You might want to add a bleeder valve near the slave cylinder. Although it's not required, it'll make bleeding the system easier and less messy.

4) Shift Linkage.
This is the part I haven't tackled, yet. Rodney's stuff won't help with the 284 (I called to ask him.) Essentially, you are using a FWD configuration in a RWD application. I'd love to see how ACE (American Custom Engineering) handled this issue.
Possible solutions:
1) Extend the shift & select cable lengths to fit into their stock locations.
2) Use additional levers to reverse the function of the shift & select cables.
3) Rotate the existing shift/select levers on the transaxle shift/select shafts to reverse the function.
I'm open to any ideas on this one. It's the last thing I have to do before installing the new engine/transaxle/cradle assembly.

5) Axles.
The 284 uses a different spline pattern than the 282. However, you can, easily, splice the 282 & 284 axles together at the CV joint. Just make sure you use the 284 piece on the end that fits into the transaxle. In some cases a bit of the axle (Less than 1/4") needs to be removed. If you hear chatter from the transaxle when turning, you'll need to do it.

thanks all ..i hope i can do it ..and get it done some what soon ..but i hope fiero308 can lend me some adivice since i've been told he has that set up already in his fiero

thanks all

..keep the more info coming ..when and well if i start my build on it ..i'll try to get lots of pics and i'll add this link too to the build thread

matt

hi Carswell
been away for quite a bit; just busy.

yes I am keeping the 3.4 TDC with its 284 as a pkg.
I am not done yet but am pursuing this for my own reasons......
would I recommend it to someone else? Not sure that I would do that to someone; there is a LOT of work and adaptation and I am still not there yet.
I have an 85 base to work with and I modded the cradle to resemble the Lumina engine AND trans mounts; they are more-or-less a mirror image of the stock 2.8 setup so there is a bunch of work alone. The shift mechanism needs to be modded as well and to the best of my knowledge or findings nobody "makes" anyting for that: you are on your own and have to make the pieces.
My setup LOOKS like it will work but the proof will be in the pudding of course and that will be next yr now.

Keep in mind that my rebody gives me an extra 5" of width across the back over a stock fiero which helps a bit. I think I will still be into custom axles tho.

My reasoning is that someday I MIGHT try to do a 'super' 3.4; maybe built up and turbo'd etc but that is a dream at the moment...
So the 284 should be able to handle ANY punishment you can throw at it, given the stock situation GM put it into (heavy car with higher output motor)
It is NOT a service item; you can't get parts for it (from GM) - it is listed as a 'replacement' unit - take the whole thing out and replace it.......!?!?!??

bottom line: you should have a REALLY good reason for wanting to do this vs just using a 282. Give it a lot of thought and be sure.
gp

well thanks for your input ..i dunno how long ago ..maybe a month now ..or well at least a few weeks ..i decided to look for a an 282 i think getrag from a fiero ..and now thinking of just getting one out of an older cav or barreta and getting the adapting brackets from rodney ..but thank you for your insight and i hope it all goes well with your swap ..i looked over your thread on the other forum ..and wow ..that is alot of work too ..and well i don't want to go shoulder high deep into that lol ..but ya ..and would like to see a video when it is all done and completed ..will work really well when its done ..good luck

matt

you should be able to goto w-body.com and trade the 284 for a 282 without any problems at all, im sure some of those guys will jump on that.

some getrag 282's had the same speedo sensor assembly as the 284, so if you use a manual trans wiring harness from a GP then you might not have to modify the harness for speedo, im not sure.

matthew

If anyone has a Getrag 284, but wants a 282, contact me. I'll buy the 284 or trade you a 282 for the 284.

Rick
rbeem@alltel.net
706.654.1016

a buddy of mine knows of one in a car in a junkyard ..but its like up here in canada ...so ya ..good luck with that ..and i was suprised to see my thread randomly pop back up lol