Subject	I also swapped an early 90's Q45 diff into an NA subframe.
Posted by	Gordo LSZ Daytona on August 11, 2020 at 6:47 PM
	This message has been viewed 341 times.
In Reply To	i swapped in a q45 diff into my tt converted slicktop posted by slayer fan on August 11, 2020 at 05:38 PM
Message	it was a straight drop in replacement. For those contemplating doing this, be certain you familiarize yourself with R200 vs R230; and long and short nose diff configurations; five vs six bolt axles and different spline counts. There are also some aftermarket components which allow using later Z differentials using specialized offset diff to subframe bushings. But the Q45 unit is by far the easiest. We changed over to 5 bolt axle stubs so I could keep the NA axles and subframe driveline components. Also added an NA pinion flange. Mine's a 3.54, although with all the LS torque, I should have gone down to a 3.32. What'd ratio did you select? _________________________________________________
Follow Ups	i swapped in a q45 diff into my tt converted slicktop - slayer fan 17:38:28 08/11/20 Nice, I'm planning on doing the same. - itsa300zx 18:18:46 08/11/20 yes i did switch out speed sensors. you can use a - slayer fan 18:23:33 08/11/20 Will this work for the auto transmission cars? - TTkeeper 12:15:40 08/14/20 I also swapped an early 90's Q45 diff into an NA subframe. - Gordo LSZ Daytona 18:47:58 08/11/20 i used a 99 q45 diff, which has a 3.69 ratio. - slayer fan 22:53:55 08/11/20 I did the same with my 2+2TT, 3.69 is a better ratio for TT (n/m) - Doug71zt(CAN) 23:02:22 08/11/20 Got a complete TT subrame for mine - ConVerTT 23:20:29 08/11/20 Funny. I have been thinking about swapping the differential - Mike (NoVA) 08:19:36 08/12/20 R-200 Variants: - Gordo LSZ Daytona 09:35:18 08/12/20 Handy info. VTF. (n/m) - CameronSF 15:32:36 08/13/20 Gordo is our part spec guru - vorpalZed 16:49:46 08/13/20 Keep in mind this data is compiled using the internet... - Gordo LSZ Daytona 06:47:11 08/14/20 I did the same a few years ago! - Keaner 21:45:16 08/12/20 Guys with the Q45 diff swap - RobZ32 18:24:01 08/13/20 Re: Guys with the Q45 diff swap - cc 20:00:33 08/13/20 Is the z33 6th gear same ratio as the z32 5th? (n/m) - itsa300zx 22:44:30 08/13/20 it's real close. so it won't really help to lower rpms - slayer fan 23:50:04 08/13/20 Like this? - MixManMash 08:09:21 08/14/20 that would be nice. but it's a little more than i'm - slayer fan 17:13:31 08/14/20 The issue with the CD009 (Z33) trans is the... - Gordo LSZ Daytona 12:59:53 08/14/20 2400 to 2500 i believe for mine. with the 3.69 - slayer fan 23:59:25 08/13/20 The best solution to highway cruising is to keep the set up - Gordo LSZ Daytona 13:14:15 08/14/20 Yep. - MixManMash 20:28:34 08/14/20 Speaking of... Insights/reviews anyone would like to share?! (n/m) - KevinsFairlady 15:55:08 08/16/20 meh, love the NA rear end - Adam (NoVA) 17:41:24 08/15/20 True (n/m) - Ghoztt (MD) 10:14:29 08/17/20
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