6speed 6T45 FWD Trans Conversion? 
6speed 6T45 FWD Trans Conversion?
Thread Starter
Launching!
Joined: Jan 2005
Posts: 272
Likes: 1
From: Northern NJ
DAMN 2minutes flat!! lol Provided the W-platform is as wide in the engine compartment of the Malibu, I'm fairly confident it can be done...I'm just doing a bit of market research as I was leaning towards doing the 6L80 in a GTO, but figured...hmmm...maybe the LS4 guys could use a 6 speed auto more than the GTO crowd. Plus I the conversion would be cheaper.
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I think you mean the 6T75. Our engines would murder the 6T45.
There are a lot of issues to overcome with this swap. There's the bellhousing pattern, transmission-mounted starter issue, and ECM/PCM and TCM issues just to name a few.
The 6 speed auto for the GTO would be cheaper since the C6 corvette with the LS2 comes with one (6L80).
Thread Starter
Launching!
Joined: Jan 2005
Posts: 272
Likes: 1
From: Northern NJ
Thread Starter
Launching!
Joined: Jan 2005
Posts: 272
Likes: 1
From: Northern NJ
That would be the F40 6 speed manual.
I think you mean the 6T75. Our engines would murder the 6T45.
There are a lot of issues to overcome with this swap. There's the bellhousing pattern, transmission-mounted starter issue, and ECM/PCM and TCM issues just to name a few.
The 6 speed auto for the GTO would be cheaper since the C6 corvette with the LS2 comes with one (6L80).
I think you mean the 6T75. Our engines would murder the 6T45.
There are a lot of issues to overcome with this swap. There's the bellhousing pattern, transmission-mounted starter issue, and ECM/PCM and TCM issues just to name a few.
The 6 speed auto for the GTO would be cheaper since the C6 corvette with the LS2 comes with one (6L80).
LS4s have a 60* V6 FWD bellhousing pattern, so wouldn't it bolt up fine to the other trans? Or are they not on that pattern?
I'm still worried about the starter.
I'm still worried about the starter.
Last edited by Patrick G; Jun 7, 2010 at 09:36 PM. Reason: Keeping things on a positive note.
Thread Starter
Launching!
Joined: Jan 2005
Posts: 272
Likes: 1
From: Northern NJ
But I assure you I have no intent of pushing anything on this thread because besides not owning a W-Body vehicle and respecting the Vendor policy, well...I don't have anything to sell. lol Once we complete our Traiblazer conversion, we will get sponsorship ASAP. Hopefully that will happen Friday. That said, the next expansion of what we're working is what I'm just looking to get a feel for.
To answer/address the starter issue, from my preliminary research a few months, the unique issue that befalls you LS4 guys is that GM put that starter up at the 10 o'clock (I believe) position. The starter body facing/setting towards the transmission.
It should not present an issue as I believe that is the same position as the 6T75 (thank you for pointing that numeric error out GXP25)
The worst case that I can foresee is that a custom adapter has to be made to revolve the starter a bit to fit the cavity available on the transmissions' main case (seen at 12 to 1 o'clock position) and a more compact starter will need to be employed.
Last edited by Patrick G; Jun 7, 2010 at 09:37 PM. Reason: Keeping the thread on a positive note
Thread Starter
Launching!
Joined: Jan 2005
Posts: 272
Likes: 1
From: Northern NJ
Very nice thread link. Love seeing guys everywhere with different vehicles tackling 'the impossible'!!
But, I'm not familiar with this F40 trans and how its shape compares to the 6T. Or for that matter what type of interferences the W-body has compared to the Fiero's engine compartment.
But, I'm not familiar with this F40 trans and how its shape compares to the 6T. Or for that matter what type of interferences the W-body has compared to the Fiero's engine compartment.
Appreciated! But I assure you I have no intent of pushing anything on this thread because besides not owning a W-Body vehicle and respecting the Vendor policy, well...I don't have anything to sell. lol Once we complete our Traiblazer conversion, we will get sponsorship ASAP. Hopefully that will happen Friday.
That said, the next expansion of what we're working is what I'm just looking to get a feel for.
To answer/address the starter issue, from my preliminary research a few months, the unique issue that befalls you LS4 guys is that GM put that starter up at the 10 o'clock (I believe) position. The starter body facing/setting towards the transmission.
It should not present an issue as I believe that is the same position as the 6T75 (thank you for pointing that numeric error out GXP25)
The worst case that I can foresee is that a custom adapter has to be made to revolve the starter a bit to fit the cavity available on the transmissions' main case (seen at 12 to 1 o'clock position) and a more compact starter will need to be employed.
But I assure you I have no intent of pushing anything on this thread because besides not owning a W-Body vehicle and respecting the Vendor policy, well...I don't have anything to sell. lol Once we complete our Traiblazer conversion, we will get sponsorship ASAP. Hopefully that will happen Friday. That said, the next expansion of what we're working is what I'm just looking to get a feel for.
To answer/address the starter issue, from my preliminary research a few months, the unique issue that befalls you LS4 guys is that GM put that starter up at the 10 o'clock (I believe) position. The starter body facing/setting towards the transmission.
It should not present an issue as I believe that is the same position as the 6T75 (thank you for pointing that numeric error out GXP25)
The worst case that I can foresee is that a custom adapter has to be made to revolve the starter a bit to fit the cavity available on the transmissions' main case (seen at 12 to 1 o'clock position) and a more compact starter will need to be employed.
I'd be very interested in knowing how you've overcome the ECM/PCM and TCM "issues." Via PM please.
Last edited by RPM WS6; Jun 7, 2010 at 03:58 PM. Reason: Thread cleaning.