Guest TurboSedan Posted December 11, 2004 Report Share Posted December 11, 2004 apparantly the '88-'89 W-bodies with the 2.8/5-speed combo recieved a 9 & 1/8" clutch disc while the '90 3.1/5-speed recieved a larger 9 & 11/16" clutch disc. now, i have a '90 flywheel and the larger clutch kit (i have Luk clutch kit part # 04-116), but is the flywheel and/or pressure plate different (size wise i guess) between the years? or is the clutch disc size itself the only difference? IOW if i bought a used flywheel from say an '88 Grand Prix from a local salvage yard would it work with my 9 & 11/16" clutch kit? Quote Link to comment Share on other sites More sharing options...
5speedz34 Posted December 12, 2004 Report Share Posted December 12, 2004 I would figure the flywheels are the same size, but thats just a guess. Quote Link to comment Share on other sites More sharing options...
Guest TurboSedan Posted December 13, 2004 Report Share Posted December 13, 2004 the 2.8 flywheel is smaller and has diffrent bolt patern than the bigger 3.1 flywheel..... made that mistake when i ordered my SPEC Flywheel and Clutch.. :oops: dang...guess that means the 3.1 flywheel is rather hard to come by since it is '90 only :? hopefully mine can be resurfaced again... Quote Link to comment Share on other sites More sharing options...
5speedz34 Posted December 14, 2004 Report Share Posted December 14, 2004 the 2.8 flywheel is smaller and has diffrent bolt patern than the bigger 3.1 flywheel..... made that mistake when i ordered my SPEC Flywheel and Clutch.. It has a different bolt pattern that's odd. Usually GM tries to keep with everything the same. Quote Link to comment Share on other sites More sharing options...
Guest TurboSedan Posted December 14, 2004 Report Share Posted December 14, 2004 the 2.8 flywheel is smaller and has diffrent bolt patern than the bigger 3.1 flywheel..... made that mistake when i ordered my SPEC Flywheel and Clutch.. It has a different bolt pattern that's odd. Usually GM tries to keep with everything the same. yeah that is wierd. which bolt pattern is different...the flywheel-to-crank or the pressure plate-to-flywheel? i'd imagine it's the pressure plate mounting bolts.... Quote Link to comment Share on other sites More sharing options...
Guest TurboSedan Posted December 14, 2004 Report Share Posted December 14, 2004 Bolt Up Flywheel to Crank differs from 2.8 to 3.1 wow.... so 2.8 crank users are stuck with the smaller clutch. thanks for the info 8) Quote Link to comment Share on other sites More sharing options...
Baddflash Posted December 27, 2004 Report Share Posted December 27, 2004 You can get your flywheel from early 90's cavi's with 3.1L thats where mine came from. I'm pretty sure they got the same trans as w-bodys did too . Quote Link to comment Share on other sites More sharing options...
stockgp Posted December 27, 2004 Report Share Posted December 27, 2004 You can get your flywheel from early 90's cavi's with 3.1L thats where mine came from. I'm pretty sure they got the same trans as w-bodys did too . i think that's been discussed before. something about different gearing and i think intermediate shaft lengths... Quote Link to comment Share on other sites More sharing options...
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