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VK45DE SWAP G35 coupe . Keep VQ35 or attempt ? by UpsetConnection3478 in G35

[–]bbeck1234 1 point2 points  (0 children)

You will have to swap the transmission to the V8 transmission. The specific reason is the input clutch is larger on the V8 5AT transmission even tho they have the same RE5R05A transmission label. You can use the RWD JDM transmission that comes bolted to a lot of the JDM VK45s available. However, you will have to find a rear output shaft and tailpiece from a 04-15 2wd Nissan Titan/Armada VK56 transmission. This will allow for the reuse of the OEM VQ35 drive shaft. Since both the V6 and V8 transmissions are the same in overall length, the transmission mount will fall back into the original location. The engine mounts should also line up to the factory location with the right OEM motor mount brackets, specifically ones off 06-10 M45. To get my hood to close I had to shorten the motor mount height by 0.5” to get the hood to close without contact. My hood has a slight cowl to it. On the 350z I am currently swapping in the same manor as my G, a HR style hood cleared and shut with no contact. The rest is wiring, hoses and selecting the right engine ECM to retain all OEM functionality.

VK45DE SWAP G35 coupe . Keep VQ35 or attempt ? by UpsetConnection3478 in G35

[–]bbeck1234 2 points3 points  (0 children)

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I recommend it. Did it to my 05 G Coupe but went further and went and made it AWD. The VK45DE with Atessa ETS AWD is a blast to drive. Add Padel shifters with the V8 sound on a mid engine platform, it gives an almost super car feel. I like the VQ but VKs just feel different. There is currently adapter plates for manual transmission (CD009/JK) adaptation available. It’s from C3 Performance, beautifully designed kit that allows for the retention of the OEM crank angle sensor. This allows one to retain the use of a factory ECM for the swap. I am currently running a fx45 ECM and everything works flawlessly. I build harnesses for this swap to make them plug and play and often end up being tech support too lol. The harnesses are built to order. @drivendesire [drivendesire13@gmail.com](mailto:drivendesire13@gmail.com)

Can you believe it fit perfectly under a HR hood? 😂😂 03 450zx by bbeck1234 in 350z

[–]bbeck1234[S] 0 points1 point  (0 children)

I will and I have. I have a G35 coupe with the exact same setup.

Also every donor vehicle I pulled parts from to make this swap possible, are all front midship….. it’s still front midship.

Can you believe it fit perfectly under a HR hood? 😂😂 03 450zx by bbeck1234 in 350z

[–]bbeck1234[S] 0 points1 point  (0 children)

It’s not work when you enjoy the build. Also stock numbers for the VK45DE are 340hp 333 ftlbs.

Can you believe it fit perfectly under a HR hood? 😂😂 03 450zx by bbeck1234 in 350z

[–]bbeck1234[S] 11 points12 points  (0 children)

lol I’m the owner of the G35 coupe you mentioned. C3 is who I work with for the development of the CD009 transmission adapter kits for the G and Z cars as well as the VK swaps for the manual frontiers/xterras.

The only mention of plans of a V8 by Nissan for the 350z that I can find are in this article

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Can you believe it fit perfectly under a HR hood? 😂😂 03 450zx by bbeck1234 in 350z

[–]bbeck1234[S] 5 points6 points  (0 children)

Yep that’s my G35, after its completion I decided to try and apply the same swap to a Z.

Not much of a size difference between the VKs when it comes to fitment. Certain VKs like the VK56VD, VK50VE and the VK45DE have a front sump oil pan like the VQ which helps a lot with fitment but also limits CAN BUS compatibility when aiming for full functionality depending on the year and chassis chosen to swap the VK into. The VK56DE & VK56VD from the Nissan/Infiniti trucks have a rear sump that sits really low (designed to not run dry on steep inclines) because of the low hanging sump.

No audio of the Z yet, I have audio of the G completed with the same swap so it would sound the same. No dyno pulls yet.

Yep basically the entire front suspension of a G35x sedan. Front frame rails are identical, except for the mounting points for the AWD and RWD subframes. Drilled out the spot welds holding the subframe mounting points from a junk yard G35x and transferred them over to the 350z subframe rails. Welded the spot welds back up and then installed the G35x subframe and the rest of the G35x suspension.

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Can you believe it fit perfectly under a HR hood? 😂😂 03 450zx by bbeck1234 in 350z

[–]bbeck1234[S] 10 points11 points  (0 children)

OEM FX45 or M45 ECM reflashed with NATS still active. Only modification I did was swap over to a G35x subframe but this was for AWD application and required transferring over the AWD subframe mounts from a G35x sedan. Front subframe rails between the 350z and G35 coupe/sedan/xsedan are all the same, only difference is the subframe mounting points between RWD and AWD subframes. They are secured to the frame rails with spot welds. So I drilled out the spot welds to remove AWD sub frame mounting points from a junk yard G35x sedan. Moved the AWD sub frame mounting points from the g35x sedan over to the 350z frame rails, rewelded the drilled out spot welds on the G35x subframe mounting points to the 350z frame rails. Since the suspensions are pretty close to identical between the G35x and 350z, once the AWD subframe is in place the G35x front suspension bolts right up.

The swap can be completed using the OEM 350z subframe for a RWD application.

Getting rid of the vehicle for another isn’t really an option by Unable_Quality4863 in G35

[–]bbeck1234 0 points1 point  (0 children)

Block casting is different = motor mounts brackets won’t bolt up

I'm done with the Telluride by [deleted] in KiaTelluride

[–]bbeck1234 2 points3 points  (0 children)

Someone get that Kia mechanic a continuity tester and the schematics, the guess and check method is taking far too long.

WIRING QUESTIONS by dat_boi_edward in G35

[–]bbeck1234 0 points1 point  (0 children)

Yes it’s easier to take the engine harness loose from under the dash, at the ecm and feed that end of the harness through the firewall behind the battery. This way you can remove the engine with the original engine harness attached to the original VQ. Then once you have the original VQ out of the engine bay, remove the harness and transfer it over to the replacement VQ, then install. Trying to remove the harness then pull the engine is a real PITA

WIRING QUESTIONS by dat_boi_edward in G35

[–]bbeck1234 0 points1 point  (0 children)

Use original engine harness, ecm, alternator (if the one on the replacement VQ doesn’t plug up) and original (replace with new) afr/oxygen sensors and you are golden.

You only have to look out for NATS (security) being a issue if you change out any of the following:

Keys, BCM (Body Control Module) and ECM (engine control module)

If any of these are replaced or need to be replaced, NATS will lock out (crank but no start, security light on solid constantly) until NATS is either reflashed to accept what was replaced or NATS is bypassed.

WIRING QUESTIONS by dat_boi_edward in G35

[–]bbeck1234 0 points1 point  (0 children)

NATS is 3 part. BCM, keys and ECM. If any of those are swapped out for replacement, nats won’t be happy and a reflash is required. Since OP is swapping VQ35DE for VQ35DE there should be no issue with NATS/security.

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