Transmissions and Drivetrain Need help with your trans? Problems with your axle?

will a turbo 350 trans fit into a 88iroc

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Old 09-25-2010, 04:33 AM
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will a turbo 350 trans fit into a 88iroc

theres two turbo 350 trannys. from a 78 and 79 camaro for 100$ 1 needs to be rebuilt
wondering if i could get this turbo 350 tranny into a 88 iroc-z with a 5.0 it has the 4speed overdrive transmission in it but is shot i want ot know if it will support the endine cause im going to be getting a tranny from a 82 berelinetta 5.0 and they said it wouldent support the iroc_z
Old 09-25-2010, 07:07 AM
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Re: will a turbo 350 trans fit into a 88iroc

The TH350s and TH400s are shorter then the 200r4 and 700r4 by about 6 inches if I remember correctly. Which means the crossmember will need to be modified as well as the driveshaft. As for supporting the engine it will sure do that.
Old 09-25-2010, 07:47 AM
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Re: will a turbo 350 trans fit into a 88iroc

Yep, get a TH350 trans adapter(Has a mounting point for the torque arm and a trans mount adapter) if one of the transmissions has a 9in tail shaft get that one. Most have the 6in tail shaft so you will need a longer drive shaft(82 Camaros and Firebirds with the auto work great). Good luck.

Mark.
Old 09-25-2010, 09:47 AM
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Re: will a turbo 350 trans fit into a 88iroc

Using the driveshaft,torque arm,and other parts from
that '82 berlinetta parts car,installing the th350 will
be a virtual bolt in using a torque arm adaptor.
The '88 might not have all the holes in the frame rails
to mount the '82 crossmember.
I still say it would be easier to repair the 700r4 in the
'88 or get another 700r4,but the th350 does have a
nicer 1-2 ratio spread I had an'80 z28 th350 in my
'82 for years
Old 09-25-2010, 11:36 AM
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Transmission: 5 spd in two stock auto in other tw
Axle/Gears: stock
Re: will a turbo 350 trans fit into a 88iroc

so all i wou;d need to get is a TH350 TRANS ADAPTER
AND USING PARTS FROM the berlinnetta should be easy
Old 09-25-2010, 12:37 PM
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Car: 89RS-5.0/88IROC-Z-5.0/92-5.7 z28/v6
Engine: 5.0/5.7/2.8
Transmission: 5 spd in two stock auto in other tw
Axle/Gears: stock
Re: will a turbo 350 trans fit into a 88iroc

and what kind of tranny would be recommended for a 88 iroc the 700r4
and how do i know if the tranny i bought works or not
Old 09-25-2010, 01:04 PM
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Re: will a turbo 350 trans fit into a 88iroc

Yep,that berlinetta should provide most of the needed
parts one thing that could be a problem though is
the th 350's kickdown cable as it will not be long
enough to reach the TPI's throttle body
(on my '69 camaro,the cable was damaged so i just left
it disconnected-other than no automatic downshift it
worked fine)
I got my th350,as is,for $100 out of a rolled '80z28
-it ended up being good(had it in from '93-95,swapped
to a 700r4 when i reactivated the a/c and wanted the
compressor turning at a lower cruise rpm)
I bought the 700r4 for $150 as is in 1995 from an'85
caprice(just about any v8 2WD,'82-93,will work if
you swap over the f-bod tail housing)
That 2nd tranny also ended up good and other than
the aftermarket converter i put in blowing it's thrust
bearing earlier this year,has been problem free for
over 15yrs-very possible to get a good used tranny
Old 09-25-2010, 04:23 PM
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Re: will a turbo 350 trans fit into a 88iroc

I wouldnt recommoned leaving the kickdown cable off, thats what raises transmission pressure. Your more likely to blow the trans faster.
Old 09-26-2010, 04:11 AM
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Re: will a turbo 350 trans fit into a 88iroc

is there anyway 2 tell if a trans mission works when its out of the car
Old 09-26-2010, 06:33 AM
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Re: will a turbo 350 trans fit into a 88iroc

Originally Posted by hasty88-and-89
is there anyway 2 tell if a trans mission works when its out of the car
Not without building an elaborate test rig.


You should be able to find another 700R4 for your car fairly easy, the TH350 is a great trans but i guarantee you'll miss the 4th gear.
Old 09-26-2010, 12:37 PM
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Re: will a turbo 350 trans fit into a 88iroc

700r4 is the tranny i need for tan 88 iroc with overdrive\
i get the th400 and 700r4 mixed up i dont remember
Old 09-26-2010, 12:41 PM
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Re: will a turbo 350 trans fit into a 88iroc

i dont think imm gonna try to use a tranny i would have to ghetto fab.
im gonna look for a 700r4 or a th400
Old 09-26-2010, 12:44 PM
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Re: will a turbo 350 trans fit into a 88iroc

AND HOW BOUT A
1990 CHEVY K/5 BLAZER 700R4 TRANSMISSION


FOR 200 ON CRAIGSLIST
Old 09-26-2010, 12:53 PM
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Re: will a turbo 350 trans fit into a 88iroc

ALSO HOW MUCH WOULD TO BROKEN TH350's be worth in scrapmetal
ALSO TO REBUILD DO THEY SELL TRANNY REBUILD KITS ?
Old 09-26-2010, 01:58 PM
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Re: will a turbo 350 trans fit into a 88iroc

the TH400 takes just as much work as the TH350 to fit.


a 700R4 from a F-body is the only auto that's a direct bolt in for your car.
Old 09-26-2010, 02:46 PM
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Re: will a turbo 350 trans fit into a 88iroc

if you get one out of a Blazer or truck make sure its not 4wd, that trans will not work with out changing the output shaft and thats just not worth it.
Old 10-19-2010, 09:11 PM
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Re: will a turbo 350 trans fit into a 88iroc

yes it will and its a easy swap. u can buy the cross member and torque kit it just bolts right in and its pretty chep. im about to put a th350 in my 89 irco-z. the th350 is the way to go if u wanna good fast shift and tough transmission. put a good converter and shift kit and have some good rear end gears and shes gonna move.
Old 05-13-2011, 07:45 PM
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Re: will a turbo 350 trans fit into a 88iroc

Where can I find a th350 trans adapter?
Old 05-14-2011, 02:38 AM
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Re: will a turbo 350 trans fit into a 88iroc

Originally Posted by 1984ZEEE
Where can I find a th350 trans adapter?
http://www.advanceadapters.com/products/pn-7q-35a/

http://www.transmissionpartsusa.com/...7Q35B&CartID=1

Those are to run a TH350 with a 9" tail output shaft (or 700-R4 output shaft) with a spacer and a 6" tailhousing (from th350 or 700-R4)

There is also B&M kit (much easier to find than the above "switch kit") to allow the torque arm to bolt up to a 6" tailhousing TH350 but the driveshaft is still too short.
Old 05-14-2011, 05:39 AM
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Re: will a turbo 350 trans fit into a 88iroc

You are awesome, Thank you.
The b&m kit seems the best way to go so I am going to order that.
The adapters say it requires cutting 1 3/8' off of the output drive carrier.
That just sounds crazy to me. I don't own a machine shop either though.
Thanks.
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