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Northstar + 4T80e, What axles??? by Jncomutt
Started on: 08-17-2009 12:47 AM
Replies: 11
Last post by: Jncomutt on 09-07-2009 01:11 PM
Jncomutt
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Report this Post08-17-2009 12:47 AM Click Here to See the Profile for JncomuttSend a Private Message to JncomuttDirect Link to This Post
I see a lot of guys runnin the 5 speed with the northstar, but I know there are plenty running the auto as well. Maybe Madcurl may be able to help me out here?? Now that I've finished my sister's 3800 NA swap, I'm looking for something to play around with in my spare time.

I need to know what everyone is using for axles with this engine/trans combo.

Edit 4/19/2010
Quote from Fiero STS and confirmed in posts below..
"First disassemble the caddy axles. Take the shaft to your machinist buddy and have him move the snap ring grooves as close to the center as the splines will allow. About 3/8 inch. Do this to both ends, all four snap ring grooves. Then cut off that much from the ends. This shortens the axles 3/4 inch. Next disassemble the outer joints, removing the balls and cage, save the center portion the part that fits the axle. Next disassemble Fiero manual transmission axle outer joints. Auto axles will not work, they are too small. Save the outer part with the axle stub that goes through the bearings and drives the wheels. Now put the part you saved from the Deville outer in the Fiero outer, using the balls and cage from the Fiero outer. Now you have an outer joint that fits your Fiero and fits on the Deville shaft. Now reassemble complete shaft. You should end up with a shaft that is 3/4 inch shorter with caddy tripod on inside and fiero c/v on the outside. "

[This message has been edited by Jncomutt (edited 04-19-2010).]

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darkhorizon
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Report this Post08-17-2009 08:20 AM Click Here to See the Profile for darkhorizonSend a Private Message to darkhorizonDirect Link to This Post
May want to cruise over to CGP for an idea.. I know some guy with the name like "400turbo" or something did a conversion to a 80.
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carbon
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Report this Post08-17-2009 09:11 AM Click Here to See the Profile for carbonSend a Private Message to carbonDirect Link to This Post
FieroSTS on here has done more than one N* swap...
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Jncomutt
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Report this Post08-19-2009 07:24 PM Click Here to See the Profile for JncomuttSend a Private Message to JncomuttDirect Link to This Post
bump, STS, you around???
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Ratfink
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Report this Post08-19-2009 07:39 PM Click Here to See the Profile for RatfinkSend a Private Message to RatfinkDirect Link to This Post
 
quote
Originally posted by darkhorizon:

May want to cruise over to CGP for an idea.. I know some guy with the name like "400turbo" or something did a conversion to a 80.


Pardon My ignorance ,,Whats CGP? PM me if You want to! Thanks
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Jncomutt
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Report this Post08-19-2009 07:53 PM Click Here to See the Profile for JncomuttSend a Private Message to JncomuttDirect Link to This Post
Club Grand Prix

www.clubgp.com
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ryan.hess
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Report this Post08-19-2009 09:19 PM Click Here to See the Profile for ryan.hessSend a Private Message to ryan.hessDirect Link to This Post
You want to remove 3/8" off the end of each axle, and cut new snap ring grooves 3/8" inwards (each end). The axle will be 3/4" shorter in total. Use the fiero manual outer and 4t80e inner.
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Jncomutt
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Report this Post08-19-2009 11:16 PM Click Here to See the Profile for JncomuttSend a Private Message to JncomuttDirect Link to This Post
Thanks, what shafts?
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Jncomutt
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Report this Post08-21-2009 04:29 PM Click Here to See the Profile for JncomuttSend a Private Message to JncomuttDirect Link to This Post
4t80 caddy axles??
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Jncomutt
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Report this Post09-07-2009 06:03 AM Click Here to See the Profile for JncomuttSend a Private Message to JncomuttDirect Link to This Post
bump...
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FastFieros
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Report this Post09-07-2009 10:32 AM Click Here to See the Profile for FastFierosClick Here to visit FastFieros's HomePageSend a Private Message to FastFierosDirect Link to This Post
 
quote
Originally posted by Jncomutt:

4t80 caddy axles??


Yes, its the 80e axles you modify. Putting the manual Fiero CV on the end of the axle will either require the ball and CV cage to be used, or just the outer as a whole.

I use a lathe to turn the axle, but I have to use a grinder to cut the groove. I just mount my air grinder on my cross slide.

http://www.fastfieros.com

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Jncomutt
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Report this Post09-07-2009 01:11 PM Click Here to See the Profile for JncomuttSend a Private Message to JncomuttDirect Link to This Post
Thanks loyde, I'll pick up some 80 shafts and see how they fit. The 80 came in a few different models, hopefully the axle length didn't change between them.

I think I'll put the axle in the lathe and turn down the end and use a parting type tool to cut the c-clip groove.
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