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Zac88GT
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SEP 21, 03:13 AM
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Well i didn't want to start this thread until i was finished but i guess i will just post the work as it gets done. The big question was can a northstar be mated to an G6 6 speed and it can. The first step i went through is getting the trans to bolt up to the engine. The right side of the northstar block must be notched and an adapter made to relocate the lower rear bell housing bolt. This also has to be done when using a getrag.
The lower rear water passage of the water manifold interferes with the bell housing. So the bell housing must be clearanced and the area around the bolt hole on the water manifold can also be ground slightly.
Just like the getrag the inside of the bell houseing must also be ground to make room for the top mounted starter.
The shift mechanism clears the water manifold without a problem. The shift counterweight is the closest to the water manifold when the transmission is in reverse. I'm not sure if you can tell or not but there is about 1mm clearance between the weight and the manifold when in this position.
Those are all the modifcations necessary to get the g6 trans to bolt up to a northstar. Hopefully tommorrow i'll be able to tackle the new mounts.
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Team Race-Tech
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SEP 21, 09:13 AM
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Are you going to have a flywheel made or you going to modify an excisting one?
http://www.fiero.nl/forum/F...4/HTML/034727-6.html
I had some one ask my early this year if the G6 will mate up to the northstar... Was it you?
Joe------------------
Street Legal Tuning.
Specializing in Fiero performance:
3800 swaps, custom Aluminum flywheels, Brakes, Engine's, Aftermarket Bolt on performance parts, used Fiero parts,
www.iactech.com e-mail: joetrentadue@hotmail.com
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Zac88GT
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SEP 21, 10:16 AM
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Yeah it was probably me but I think there were a few others that were interested in it. I'll be reusing my aluminum spec flywheel and am going to CNC an adapter. This is the design i'm thinking of using.
The design isn't final but let my know what you think and what i can improve on it. With this design the adapter weight will be 5 lbs.
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ryan.hess
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SEP 21, 12:16 PM
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Incredible.
You're not a talker, you're a doer!
Keep up the good work!
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Will
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SEP 21, 12:44 PM
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Yeah, good stuff.
Let us know how it drives and how you like that monstrous 1-2 RPM drop.
What FD will you be running? G6 or Saab?
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darkhorizon
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SEP 21, 03:06 PM
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why not cut off the shift counter weight?
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befarrer
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SEP 21, 03:15 PM
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Sorta related question. I see you have a hydraulic release bearing, I guess all 6 speeds have this, but what do you do for a clutch master? Does the Fiero master work ok with the release bearing? Reason I am asking is because I am looking for a getrac, but most of the ones I am looking for used the hydraulic release bearing. ------------------
84 Fiero Sport Coupe #1192 :: 86 Fiero Base Coupe Quad 4 HO :: 1998 Dodge Neon EX 2Dr 2.0L DOHC Auto
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Formula88
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SEP 21, 05:52 PM
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Northstar, 6-speed, on an 88 cradle. 
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Team Race-Tech
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SEP 21, 09:05 PM
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Zac88GT
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SEP 22, 12:09 AM
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First to answer a few questions:
I'll be using the stock g6 final drive ratio
I'm not going to cut off the counter weight because it doesn't interfere with anything
Team race tech how much would it cost for a one piece flywheel? I'm definatly interested but i should probably follow through with my own plans since i have already bought the $130 (ouch!) piece of aluminum to make my adapter from.
Today i got the mounts finished. All the mounts are made from 1/4" plate and the mounts themselves are energy suspension poly GM transmission mounts. I started with making the rear transmission mount.
Then i made the frame mount part of it, added a few gussets and a large piece of scrap i had lying around to sort of box up where the old mount used to be.
Then i started working on the front tranny mount.
And the frame part of the mount.
The last few pictures are crappy because it was getting dark. Next step will be to make the intermediate shaft bearing support.
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