2009 Base Cayman 2.9L/Cayman S Transmission
03-07-2015, 09:29 PM
#16
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The 3.4 transmission is a direct bolt-in, but the the flanges for the half-shafts are different.
You must either use the "S" half-shafts or change the output flanges on the tranny. Whether or not the hub flanges need to be changed if using the "S" half-shafts wasn't made clear.
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Vinby77 (06-21-2022)
03-09-2015, 10:01 PM
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03-09-2015, 10:03 PM
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I am a corner worker and will be working 14 at Sebring next week. I will be there every sanctioned day, starting on Wed.
Unfortunately, I can't bring my Cayman to Sebring 'cause it won't pull a travel trailer.
03-09-2015, 10:05 PM
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Thanks coryf/gtgears for your replies.
I was just checking the grand-am ST rule book and they never mantioned about which tranny to use, it only said OEM (I assume stock base model cayman.) But, WC rulebook shows that Cayman S tranny is allow. What is the disadvantage of keeping my base cayman tranny vs cayman S?
I was just checking the grand-am ST rule book and they never mantioned about which tranny to use, it only said OEM (I assume stock base model cayman.) But, WC rulebook shows that Cayman S tranny is allow. What is the disadvantage of keeping my base cayman tranny vs cayman S?
In PWC, the GTS Cayman is the S model.
03-09-2015, 10:09 PM
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Don't want to know the results as I will be watching on Saturday on CBSSN.
03-10-2015, 09:07 AM
#22
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Autometrics. Car 24 and 04 in ST. We aren't planning on going to Sebring. Shifted our focus to WC this year. We ran Daytona this year in ST though. The TC spec is slightly different but we are using the same cars. The numbers are 03 and 04 in WC.
03-20-2015, 10:27 AM
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Half of us are on this board...just ask away!
03-30-2015, 12:11 AM
#27
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We're running the S trans in our #00 2.9 base Cayman in TC with the base axles and flanges and the case is the same part number as the case on our base trans that came out. The GT diff we have in the car now is the same as the diff in the #83 Next level European ST Cayman in IMSA built by BGB that I also work on.
11-29-2021, 10:44 AM
#28
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2.9 transmission on a 3.4 S cayman
Just double checking. Is possible to install a 2.9 transmission on a 3.4 engine both are non-locking. My transmission broke and the 2.9 is more accessible. Any disadvantages of doing this?
06-21-2022, 08:12 AM
#29
@adpaz had you chance gearbox to 2.9 if so how did it go ? Mine also is needed for replacement . My gears between 1 and 2 gear will jump out if Im not have full throttle. Or do you know how to fix?
best regards
Vinby77
best regards
Vinby77
06-22-2022, 11:59 AM
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hi Vinby. No I my cayman still not running. I bought a transmission from ebay, received it and it was all rusted inside, looked nice outside though. It was a pita to get my money back but I finally got and now still in a search for another one. Is hard to find. Good luck
