Manual trans options
Race Director
Joined: Jun 2000
Posts: 10,036
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From: FL
Nissan 350Z transmission. G-Force has an adapter to put it behind an LS. https://www.crossmembers.com/ls-swap...-transmission/
Looks like shifter position will be an issue and gear ratios would probably require a swap to a 3.08 rear.
Not sure how it would be adapted to fit behind a SBC/BBC. I used a Quicktime bellhousing to swap a T-56 Magnum behind my big block.
Looks like shifter position will be an issue and gear ratios would probably require a swap to a 3.08 rear.
Not sure how it would be adapted to fit behind a SBC/BBC. I used a Quicktime bellhousing to swap a T-56 Magnum behind my big block.
Thread Starter
Drifting
Joined: Jun 2012
Posts: 1,990
Likes: 183
From: Port St. Lucie Fl
There's an adapter for sbc also, the 350z runs a 3.54 gear and it's stronger than a ,t56 stock vs stock shifter location was a concern and why I asked.
Last edited by Kacyc3; Dec 3, 2020 at 09:54 PM.
Race Director
Joined: Jun 2000
Posts: 10,036
Likes: 668
From: FL
I would not want to run that 3.54 gear with anything but a 3.08 rear. I had a Tremec 3550 with 3.27 first and 3.36 rear and first gear was almost unusable. I now have a 2.64 first (T56 Magnum) and 3.73 rear and it is almost perfect.
4th Gear
Joined: Feb 2020
Posts: 4
Likes: 2
going to make it work. I have the g force adapter and a 6.0 crate that will be going into a 69 conv. But that will be another nine months down the road. doing a frame off and just started bolting parts back on to the frame yesterday. running a 3.55 rear gear same as the 350z.
Old Pro Solo Guy
Joined: Dec 2017
Posts: 8,004
Likes: 4,361
From: Marlton NJ
Interesting and inexpensive 6spd trans. Seems to have some TQ capability. But a 3.78 1st gear!! WOW! With a 3:55 rear that gives you over 13:1 in first!!. I do not think you will like that in a V8. It's designed as a granny gear to get a heavy car going with a low TQ V6. I have 2 stick cars with 1st gear ratios like that and they are thru 1st so quick they take some getting used to. In normal driving the 1st/2nd gear change happens in the middle of the intersection under the stoplight. But they need it as they have little engines in heavy cars.
If I were you I would play with the gear ratios and reconsider the rear gear. A 3.08 rear gear will still give you a quick 1st gear, and a 2000 rpm at 70 cruise.
In all my stick cars I find the 5th/6th gear change mph point the most annoying or satisfying.
Play with this spreadsheet if you like:
If I were you I would play with the gear ratios and reconsider the rear gear. A 3.08 rear gear will still give you a quick 1st gear, and a 2000 rpm at 70 cruise.
In all my stick cars I find the 5th/6th gear change mph point the most annoying or satisfying.
Play with this spreadsheet if you like:
Old Pro Solo Guy
Joined: Dec 2017
Posts: 8,004
Likes: 4,361
From: Marlton NJ
Agreed?
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Race Director
Joined: Jun 2000
Posts: 10,036
Likes: 668
From: FL
Steve was that in your big block? I am having the same dilemna trying to decide between the WR or CR TKX.(Seems like you have tried both.) Starting to feel the 2.87/3.36 combo is plenty of 1st gear with a BB. And the 3.27/3.36 combo doesn't add anything useful, since the car will already be traction limited.
Agreed?
Agreed?
I think the 2.87/3.36 combo will work well. That is basically the same as my combo (2.66/3.73). Sometimes I wish for a deeper first (2.97 wide ratio T-56) just because I have a 25# flywheel which can make easing off the line in traffic tricky.
Last edited by SteveG75; Dec 21, 2020 at 04:42 PM.
Old Pro Solo Guy
Joined: Dec 2017
Posts: 8,004
Likes: 4,361
From: Marlton NJ
Good. Glad it helped. I have 7.3 to one in first now in my factory CR 3.36 BB and it is a dog. 1st runs thru 65mph!
I also have 14:1 and 17:1 in two street cars. At 14:1 if I use full throttle (V6) 1st gear is over about as fast as I can get the clutch out , too much.
That's the reason I think I am not going to go with 11:1 with my BB (3.27/3.23) it just won't be very useful. It'll be over as soon as I get the clutch out and just be a smoke show anyway. So why have a gear I can't really use?
So pretty sure I want the CR trans with 2.891st/3.23 rear. 9.6 overall. 1st will be all done at 50mph (vs 44mph for the WR box).I'll still have 5,280 ftlbs in 1st gear so It will still "go" and traction will still be a problem LOL 1st will be like an old school CR with 430s or 456s in the back! That should be "enough" for me! And a 2000 rpm cruise from 60 up.
I also have 14:1 and 17:1 in two street cars. At 14:1 if I use full throttle (V6) 1st gear is over about as fast as I can get the clutch out , too much.
That's the reason I think I am not going to go with 11:1 with my BB (3.27/3.23) it just won't be very useful. It'll be over as soon as I get the clutch out and just be a smoke show anyway. So why have a gear I can't really use?
So pretty sure I want the CR trans with 2.891st/3.23 rear. 9.6 overall. 1st will be all done at 50mph (vs 44mph for the WR box).I'll still have 5,280 ftlbs in 1st gear so It will still "go" and traction will still be a problem LOL 1st will be like an old school CR with 430s or 456s in the back! That should be "enough" for me! And a 2000 rpm cruise from 60 up.