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88 5 speed Getrag quad 4 to V6 by 88FIERO58
Started on: 04-15-2015 11:48 AM
Replies: 12 (690 views)
Last post by: Raydar on 04-19-2015 10:03 PM
88FIERO58
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Report this Post04-15-2015 11:48 AM Click Here to See the Profile for 88FIERO58Click Here to Email 88FIERO58Send a Private Message to 88FIERO58Edit/Delete MessageReply w/QuoteDirect Link to This Post
I was going through some postings on Trannies and this question came to mind.
Will I need an adapter to attach a stock 86 V6 to my 88 Getrag Transmission that had a quad 4 on it?
My thinking is yes, and where would I get one?
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Report this Post04-15-2015 12:11 PM Click Here to See the Profile for Gall757Send a Private Message to Gall757Edit/Delete MessageReply w/QuoteDirect Link to This Post
The 86 V6 and the 88 V6 were the same bolt pattern. All 282 Getrags will fit both. You may need to check Rodney's site for adapters if you have a Quad 4 Getrag.

[This message has been edited by Gall757 (edited 04-15-2015).]

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fierosound
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Report this Post04-15-2015 12:52 PM Click Here to See the Profile for fierosoundClick Here to visit fierosound's HomePageClick Here to Email fierosoundSend a Private Message to fierosoundEdit/Delete MessageReply w/QuoteDirect Link to This Post
Your post is a bit hard to follow....

Get a transmission shop to change the bellhousing half of the Quad-4 Getrag transmisson.
You'll need the bellhousing from a V6 Getrag (but then you'd already have a V6 tranny anyway?)
(these are circa 1992 Getrag trannys)



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[This message has been edited by fierosound (edited 04-15-2015).]

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88FIERO58
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Report this Post04-16-2015 08:46 AM Click Here to See the Profile for 88FIERO58Click Here to Email 88FIERO58Send a Private Message to 88FIERO58Edit/Delete MessageReply w/QuoteDirect Link to This Post
To clear things up, I have two cars an 86 SE V6 automatic and the 88 Quad 4, 5 speed.
I am doing a total restoration on the 88 and plan on using the V6 engine.
So what I understand, is that I can use the bell housing off the automatic tranny and swap it out to the 5 speed tranny.
Will I also need to get an ECM with a Manuel transmission chip?

Thanks for all the replies, this is a great site with a lot of information.
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Gall757
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Report this Post04-16-2015 08:52 AM Click Here to See the Profile for Gall757Send a Private Message to Gall757Edit/Delete MessageReply w/QuoteDirect Link to This Post
No.

The automatic bellhousing will do you no good..
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88FIERO58
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Report this Post04-16-2015 11:05 AM Click Here to See the Profile for 88FIERO58Click Here to Email 88FIERO58Send a Private Message to 88FIERO58Edit/Delete MessageReply w/QuoteDirect Link to This Post
Well, it looks like I am going to have to rethink this a little more.
Maybe just rebuild my Quad 4 with a few high performance parts. ??
Thanks again to all.
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fierosound
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Report this Post04-16-2015 11:33 AM Click Here to See the Profile for fierosoundClick Here to visit fierosound's HomePageClick Here to Email fierosoundSend a Private Message to fierosoundEdit/Delete MessageReply w/QuoteDirect Link to This Post
Got it. You want to use the V6 in your 88.

You'll either need to get another Getrag 5-speed transmission that fits the V6 or
get a V6 Getrag bellhousing to swap onto your Quad-4 Getrag transmission.

[This message has been edited by fierosound (edited 04-16-2015).]

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dobey
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Report this Post04-16-2015 12:22 PM Click Here to See the Profile for dobeySend a Private Message to dobeyEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by 88FIERO58:

Well, it looks like I am going to have to rethink this a little more.
Maybe just rebuild my Quad 4 with a few high performance parts. ??
Thanks again to all.


Which Q4 do you actually have? The Q4 makes more power than the 2.8 V6, so if you have a running swap, I'd stick with it, and if you want more power, perhaps see about adding a turbo or something.
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88FIERO58
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Report this Post04-16-2015 03:01 PM Click Here to See the Profile for 88FIERO58Click Here to Email 88FIERO58Send a Private Message to 88FIERO58Edit/Delete MessageReply w/QuoteDirect Link to This Post
I have the original stock 88 4 cylinder 90 hp...
Just went to a local salvage yard at noon, looked at a LD9 2.4L Twin cam in a 2001 Grand Am.
It was still in the car with all the harness.
I have a lot to do before I am ready to install an engine, so I have the time to explore my options.

Thanks
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fierosound
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Report this Post04-16-2015 03:11 PM Click Here to See the Profile for fierosoundClick Here to visit fierosound's HomePageClick Here to Email fierosoundSend a Private Message to fierosoundEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by 88FIERO58:

I have the original stock 88 4 cylinder 90 hp...


Then you don't have a Quad-4!

You have a 4-cylinder Iron Duke with Isuzu 5-speed (and the Fiero 2.8L V6 will bolt up to that).

The junkyard engine you looked at will require a lot more work to install - and possibly a different transmission too.

[This message has been edited by fierosound (edited 04-16-2015).]

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Steven Snyder
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Report this Post04-17-2015 12:13 PM Click Here to See the Profile for Steven SnyderClick Here to visit Steven Snyder's HomePageClick Here to Email Steven SnyderSend a Private Message to Steven SnyderEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by 88FIERO58:
I have the original stock 88 4 cylinder 90 hp...


Sounds like you don't have a Quad 4 and you don't have a Getrag.

Fiero 4-cyl = 2.5L "Iron Duke"
Fiero 4-cylinder manual transmission = Isuzu 5-speed
Fiero 6-cyl = 2.8L 60-degree V6

You can bolt an Isuzu 5-speed to a 2.8 but it's not the best for longevity. Here are some discussions to check out. There are many more in the archives.. do a search.
http://www.fiero.nl/forum/A...040710-2-048296.html
http://www.fiero.nl/forum/A...110502-2-107267.html

[This message has been edited by Steven Snyder (edited 04-17-2015).]

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88FIERO58
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Report this Post04-19-2015 06:39 PM Click Here to See the Profile for 88FIERO58Click Here to Email 88FIERO58Send a Private Message to 88FIERO58Edit/Delete MessageReply w/QuoteDirect Link to This Post
Thanks to all.
It looks like I am in a better position with the Isuzu Tranny. It only has 76000 miles on it.
But the V6 has 100000 on it.
It's a place to start.

Thanks to the links to other discussions.
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Raydar
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Report this Post04-19-2015 10:03 PM Click Here to See the Profile for RaydarClick Here to Email RaydarSend a Private Message to RaydarEdit/Delete MessageReply w/QuoteDirect Link to This Post
I bolted an 88 Isuzu (from a 4 cylinder) to a 3.4. (Nearly identical block to your 2.8.)
It worked fine, but I didn't shock load it. (No clutch drops or speed shifting.)

You will need an 85-87 V6 flywheel, due to the way your 86 V6 is balanced.

Buy an 87-88 V6 clutch, but use the Isuzu release bearing. (I specified 87-88 because they are both 5 speeds. I had an 88 5 speed clutch. I know that at least that one will work. I've heard of at least one person having difficulties using the 4 speed clutch with an Isuzu. YMMV.)

Your 4 cylinder clutch will also work, but it is probably smaller in diameter than the V6 clutch, and will likely wear out more quickly.

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