Tranny question

pkt1213 · 03-04-2006, 07:26 PM

I was looking around trying to find information about doing a tranny swap and can't find exactly what I am looking for. If i swap a LSD 944s tranny into my 85 N/A how would that effect how hard my engine is working. I read that it has the same first 4 gears as a turbo, shorter, and a taller 5th that equals the N/As. I just want to be sure before buying. I don't really want my highway mileage to go way down. Also it'll be mainly for autoX that I am doing this.

fast924S · fast924S's Garage

Im not sure aout the ratios, try looking up tranny spec for the 944S and then post the numbers and compare the 2, Also you could always have it regeared

NKN84944 · 03-05-2006, 11:55 AM

I did this swap a few months ago. The 5th gear is actually shorter than the 5th gear you currently have. The first four gears are just a little taller. Here are the ratios, with your 944 N/A transaxel on the left and the 944S transaxel on the right. Note that the 5th gear you currently have is .7297 and not .8286! I did not realize this until after I dropped the transaxel in the car and took it for a spin

I have to say I want my old 5th gear back... but I can actually accelerate nicely in 5th now. I am sure this transaxel would be nicer on the track once I get get everything done with her, but it is running much higher rpms on the freeway now (3500 instead of 3100 at 80mph with my speedo being a little fast).

pkt1213 · 03-05-2006, 01:26 PM

Hmm. I might just take the LS off the S tranny and put it on mine.