les Posted February 11, 2007 Share Posted February 11, 2007 Question on V160 trans swap into an old school 300zx I have a friend that wants to put a V160 Supra tranny into his 1988 Nissan 300z turbo. The car is running 285/40/18's in the rear and has a Nismo 2.8 liter V-6 racing engine that revs easily to 9500 rpm. His car presently has a 5spd with the following ratio's: ***5 Speed Nissan 1st = 2nd = 3rd = 4th = 5th = Diff/Final Drive = 3.7 Anyone knowledgable about gearing that can estimate how the car would perform through the gears compared to stock in the two scenarios below: OPTION 1 ***6 Speed (V160) 1st = 3.827 2nd = 2.360 3rd = 1.685 4th = 1.312 5th = 1.000 6th = 0.793 Diff/Final Drive = 3.133 (UK/US/Euro TT) OPTION 2 ***6 Speed (V160) 1st = 3.827 2nd = 2.360 3rd = 1.685 4th = 1.312 5th = 1.000 6th = 0.793 Diff/Final Drive = 3.7 Thanks Les Quote Link to comment Share on other sites More sharing options...
datsunlover Posted February 11, 2007 Share Posted February 11, 2007 Hey, toronto eh? heh heh.. Good to see another canuck on here! I think I'd go with the 3.133 rear end, as it's a turbo car.. although, I've never heard of that ratio.. that's a nissan rear end? And you say it's a 2.8? Now.. I HAVE seen this once (a race prepared car..) Stock 3.0L removed in favor of a built 2.8 L6 motor... anyway, I think the consensus here is that it sounds silly, but a lower (numerical) gear is better for a turbo, giving it more spool/boost.. otherwise, you go throught the gears too fast and don't get as much 'time' in a gear to make boost. Quote Link to comment Share on other sites More sharing options...
les Posted February 11, 2007 Author Share Posted February 11, 2007 Thanks for the reply The engine is a vg30 V6 not L6. nI didn't put the stock tranny's gears ratio's....its the FS5R30A (1987) below. FS5W71CFS5R90AFS5R30A 1987FS5R30A 1988-894N71B 1st3.3213.3503.3243.3242.458 2nd1.9022.0562.0772.0771.458 3rd1.3081.3761.3601.3601.000 4th1.0001.0001.0001.0000.686 5th0.7590.7520.7510.711----- Rev3.6363.1533.3823.3822.400 Quote Link to comment Share on other sites More sharing options...
les Posted February 11, 2007 Author Share Posted February 11, 2007 I guess I could not post the chart Forgot to put the original tranny gear ratio's 5spd NISSAN 1st=3.324 2nd=2.077 3rd=1.360 4th=1.00 5th=0.751 Diff/Final Drive = 3.7 Quote Link to comment Share on other sites More sharing options...
Doug71zt Posted February 11, 2007 Share Posted February 11, 2007 I would stick with the 3.133 supra pot, it will go through the lower gears too fast with the 3.70. PM or email me if your buddy is wanting to sell the Nissan trans. I'm local to you guys. Cheers Doug Quote Link to comment Share on other sites More sharing options...
datsunlover Posted February 12, 2007 Share Posted February 12, 2007 Hey Doug.. you're gona clutter up that shop even more! Quote Link to comment Share on other sites More sharing options...
Doug71zt Posted February 12, 2007 Share Posted February 12, 2007 Hi Matt Nope - This one will be a machine and install job on someone else's Lseries turbo engine. Cheers Doug Quote Link to comment Share on other sites More sharing options...
datsunlover Posted February 14, 2007 Share Posted February 14, 2007 Hey Doug.. did you get my PM? (sorry to hijack here.. ) Quote Link to comment Share on other sites More sharing options...
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