didnt they say they were going to make a 6spd impala though?!?! maybe its not that transmission but i could have sworn they said there was going to be a 6spd?
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07:06 PM
CTFieroGT87 Member
Posts: 2520 From: Royal Oak, MI Registered: Oct 2002
6 speed autos will debut in 2007 cars. And not to slight that GM PR guy, but most everyone I interact with at GM is convinced there are going to be manual V8 FWDs on account of the Zeta RWDs being delayed so long.
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07:08 PM
Oct 20th, 2005
Madess Member
Posts: 2040 From: Cincinnati, OH Registered: Feb 2004
What about using the stock G6 6 speed's axles? Perhaps the axle splines are compatible with something already on the market? I'm optimistically hoping some combination of off the shelf parts will solve all problems. Something to think about. Do we have any details on the spline's tooth count and diameter's for both the axle and input shaft? Sure would help us out! Ever think about Corvette axle parts? Maybe there is something compatible in that direction.
What about using the stock G6 6 speed's axles? Perhaps the axle splines are compatible with something already on the market? I'm optimistically hoping some combination of off the shelf parts will solve all problems. Something to think about. Do we have any details on the spline's tooth count and diameter's for both the axle and input shaft? Sure would help us out! Ever think about Corvette axle parts? Maybe there is something compatible in that direction.
can get an axle builder to make a custom center shaft to join the G6 innercv with the fiero outter cv.. not a huge deal just some $$$ get spec to put a g6 splined hub in the fiero clutch disk and thats set.. then you just need the custom mounts and shifter cable brackets..
shouldn't take too long to mate it up to a v6 fiero.. If i had the money and a garage I'd be working on it already - but I'm about to start building the garage so it'll have to wait
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08:49 AM
Oct 26th, 2005
88swap Member
Posts: 26 From: Louisville, KY, USA Registered: Jul 2005
I can't wait. Archie, will you be able to supply the transmission as well?
Yes, or we will be able to tell you the GM part number, so you can order it from the local Pontiac dealer.
quote
Originally posted by Joe Carburetor:
Archie.... are you going to use the stock 6-speed dual friction clutch?.... or are you going custom.
Anyway.... looking forward to seeing your 6-speed kit come out.
The original 3.9 used a Dual MASS Flywheel. We will not be using that on the Fiero 6 speed conversion. The clutch is not a dual friction. We can't use the G6 clutch because it is designed to work with the Daul Mass F/W.
Hope that helps
Archie
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05:14 PM
Nov 30th, 2005
BERKELUSA Member
Posts: 262 From: Manchester, New Hampshire USA Registered: Apr 2005
I got a lead on one in a junkyard I was thinking of trying it in my car. I'm going tomorrow to check it out. I was thinking though if it has a lower final gear than my five speed Isuzu and the load is not much better why bother I was hopping the six speed would get better mileage.
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12:44 AM
Fierobsessed Member
Posts: 4782 From: Las Vegas, NV Registered: Dec 2001
Yeah i was thinking the gear ratios would be different, Does anyone know the gear ratios of the saab 6 speed? The only info I have on it is that it is called the F40/6 with the rpo code of MU9, whereas the G6 is an F40 with rpo code MT2. On a side note,I drove a 9-3 today with the 6 speed and the 1-2 gear shift can be made at 6500 rpm and you end up at about 4000 rpm. at 73 mph engine rpm is around 2300 rpm. it was definately a quick car with the 2.8 turbo. I would imagine the transmission is a little stronger since the engine is "conservitively" rated at 250 hp and 258 lb. ft. of torque.
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01:31 AM
cooguyfish Member
Posts: 2658 From: Hamilton, OH, USA Registered: Mar 2002
Yeah i was thinking the gear ratios would be different, Does anyone know the gear ratios of the saab 6 speed? The only info I have on it is that it is called the F40/6 with the rpo code of MU9, whereas the G6 is an F40 with rpo code MT2. On a side note,I drove a 9-3 today with the 6 speed and the 1-2 gear shift can be made at 6500 rpm and you end up at about 4000 rpm. at 73 mph engine rpm is around 2300 rpm. it was definately a quick car with the 2.8 turbo. I would imagine the transmission is a little stronger since the engine is "conservitively" rated at 250 hp and 258 lb. ft. of torque.
Don't hold me to it, but I believe the FD is the only difference, and i think they went from 3.55 (g6) to 3.91 on the saab's. I could be wrong though
Yes, I've had quite a bit of progress. I've been posting most of my work on this project over on the last few pages of my What's up at Archie's thread. https://www.fiero.nl/forum/Forum1/HTML/024804.html
A couple of very positive things have happened already this week so I'll be updating that thread later this week.
Archie
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11:17 PM
lou_dias Member
Posts: 5348 From: Warwick, RI Registered: Jun 2000
Not to rude or anything but after talking to someone about the g6 transmission. Why mess with a tranny that hasn't been proven nor does it have a lsd from factory or the aviablity for one? Maybe it would be worth it if the converstion kit w/o tranny would be 500 bucks tops. I would think the F35 would be a better option since it can be had with a LSD. I started looking for one now. I found quite a few with G85 option (aka LSD) from a saturn redline and cobalt SS for under 1500 bucks (45 miles) and as cheap as 1100 bucks(9000 miles). This just makes a lot more since to me then wasting your time on a tranny that will hold the power but not send to both wheels. No one likes 1 tire burners.
Maybe someone on here can set me straight on something. I thought limited-slip was the "open differential" one-tire burner. I thought GM's Posi-Traction and Ford's Trak-Loc were the types of devices that would light up both wheels. I know that spools keep both axles locked together. I had two stock '86 4-speed Fiero GTs, and they would light up both tires. Would one of you smart guys clear this up for me? Thanks!
Edit: bump...
------------------ 86 Fiero GT -Stage eleventy billion...(pieces, that is!)
There are different kinds of limited slip, but the overall definition is trying to be posi, but not quite posi. In both cars I have, which have LSDs, they spin both tires in a straight line and are one-leggers when turning. So locked when straight and open when turning. A lot of cars can light up both tires with open differentials, but that doesn't necessarily mean much, they just happened to lose grip at the same time.
------------------ Christian Thomas 87 Pontiac Fiero GT Burgandy/Silver 5.7L ZZ4 5spd 301rwhp/345rwtq Next Mod: 88 suspension 06 Cobalt SS/SC w/ LSD
