4g61t.org

If I wanted to swap out a 1989 C53a turbo KM210, would the direct replacement be a F5M33 ?

What year F5M33 would retain stock axle spline fitment ?
What spline count does the KM210 use ?

I've read about weak gear sets and shitty fibrous syncros on the 89 CSM /90 DSM FWD turbo transmissions, so I need to know what viable options there are. I'm tired of thinking about FWD 89-90 transmissions with the crop of parts that are now left out there. If I sprung for a better transmission, I don't want any more transmission issues period. It would cost too much to get here, to put in and out again, etc etc. So, I looked around at Jacks and TRE, and saw the weak points about transmissions from the early era, upgrades to 2nd gear syncros, EVO3 gearsets, and the list goes on. My max goal would be the 300-400 HP/FTlbs arena, so I don't need a welded differential nor would I drive one, EVER. I Quaiffe, KAAZ or some sort of a limited slip I would consider, seriously, if it came down to it.

What kind of a transmission would you build if you could, based on what is being offered these days?

Jacks offers some high end dog tooth re-work, TRE offers EVO3 gearsets. I like the idea of syncronizers in any gear possible (1st-5th), and would consider the idea. Would I go with a taller 5th, maybe but that would pay for shipping one way.

Jacks tastiest option on the table:
http://www.jackstransmissions.com/colle ... e-gs-t-fwd

I know some guys have had wish lists in their heads, so whether you bought a built FWD trans or made one yourself (or a buddy helped), what can I put into my little can?

I have a transmission for ya. 91 too.

I just put in a 91' F5M33 as per the s/n number but I'm pretty sure it came out of a 90' car plus the shift levers looked to be 90' as well, I think the spline count changed to larger* sometime around 93*, we need smaller* spline.

Edit: it's 25 and 27 on counts there is a awesome graph in this thread that shows that info for fwd and awd, I was thinking awd.

http://www.4g61t.org/forum/viewtopic.ph ... nt#p294168

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89 Mirage Billet 20g 63t 12.4@120 417whp 400wtq @ English Racing.
89 Colt GT E316g
06 Silverado SS
07 ZX6R

93 is when they went to the bigger axles.

Will the transmission frame mount/(trans side also) need to be changed from the KM210 mount, to install an F5M33 FWD trans?

Off to the side:
Link to previous thread with information concerning Colt turbo axles fitting a Quaiffe LSD in a KM210.
http://www.4g61t.org/forum/viewtopic.ph ... line+count

same link I posted, I think lol

As for the tranny mount I think I'm running all CSM in that area, when I swapped to the DSM tranny I didn't change anything as far as mounts go.

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89 Mirage Billet 20g 63t 12.4@120 417whp 400wtq @ English Racing.
89 Colt GT E316g
06 Silverado SS
07 ZX6R

Same here, F5M33 (25 splines diff) with CSM original mounts. No problems what so ever

Well looking into a FWD DSM transmission with this code:

KF5M33 2SPZV NS6222

Jack's says I need this diff for the above transmission, when upgrading to a Quaife:

Looking into how many splines the welded diff, truly has. Update soon.

The last 6 on my K5M are KT3422.

I am real curious if there is a final drive difference on the later trans after the conversation Nocturnal and I had today on DSMtuners.

VFAQ says 4.153
4G61t says 3.941

If the 3.941 exists and it just happens to be in the later model version with the larger axles then that is what I want.

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'89 Plymouth Colt GT (my D/D)
'04 IS300 GTE/R154 swap, Small Single, AEM V1, 460whp on 91