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300ZX LS swap
The big decision in a 300ZX LS swap is where the engine sits: CX Racing and LOJ both sell bolt-in 300ZX kits, and the CX T56 kit is drawn around its own pan and headers.
Last updated
Nissan · 1990–1996Swap kits verifiedZ321 parts list
LS Gen III/IV swap — moderate
Bolt-in kits put an LS in a 1990-1996 300ZX, and the oil pan, tunnel and fuel pump are what change between a naturally aspirated car, a twin-turbo and the transmission you keep.
Recommended engine: LS3, or a cable-throttle LS1 when the hood is tight. — compare LS engines & donors
Parts and steps for the 300ZX
Every part option we know for each stage of the swap. Open a step, start with our pick, and check all the options. Plan your exact combination →
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Before you buy
Parts we know for this vehicle: 19 options across 10 of 10 categories. Thinnest: oil pan, driveshaft, accessory drive, cooling.
What it costs: budget build about $1,680 (parts, not labor, prices as of 2026-10-22).
The $1,680 is the CX Racing T56 kit (mounts, transmission mount, oil pan and headers). It does not include the engine, transmission, harness, fuel pump or driveshaft.
Tags: Verified on our parts list or confirmed on the maker's page for this vehicle · Listed the vendor's catalog names this vehicle · Community from owners' builds and small sellers.
Beta We're still fixing fitment as owners report it. Double-check parts before you buy. See what's new →
2Mounts, crossmember & oil panSet where the engine sits, then pick a pan that clears · 4 parts
Mounts & swap kits
2 options · $1,499.95–$1,680Why you need it: The mounts set where the engine sits, and that decides oil pan, header and driveline fit. CX Racing and LOJ both sell bolt-in 300ZX kits, and the CX T56 kit is drawn around its own pan and headers. Both kits are left-hand drive, and the hood latch may touch the throttle body. The LOJ kit includes the mounts, the transmission mount and a baffled pan. The tunnel needs hammering, and the dash stays. More: engine mounts and swap kits.
Our pick and alternatives2 options
Compare 2 mount & swap kit options
| Maker / product | Part # | Price | Fits / notes | Where | Status |
|---|---|---|---|---|---|
| CX Racing 300ZX LS1 T56 swap kit (engine mounts, T56 transmission mount, oil pan, long-tube headers) Listed Our pick | ESK-HD-OP-LS1-300ZX | $1,680.00 2026-10-22 | Fits a 1989-2000 Nissan 300ZX (Z32), left-hand drive, with an LS1 or LSx and a T56. Engine mounts are 7-gauge stainless with poly bushings and slotted holes. The pan is baffled with a 1/2 in aluminum flange, AN8 oil ports and an AN6 level port. Headers are 1.65 in stainless primaries with 3 in V-band ends. The hood latch may touch the throttle body, and a small trim may be needed. Right-hand drive is not covered. | Buy | In production |
| LOJ Conversions 300ZX LSx T56 basic swap kit (engine mounts, T56 transmission mount, oil pan) Listed | — | $1,499.95 2026-10-22 | 1990-1996 300ZX, naturally aspirated and twin-turbo, Gen III or Gen IV LS, GM T56. Includes the mounts, the T56 transmission mount and a baffled pan of about 6.5 qt with a dipstick and pickup. A GTO shift linkage puts the shifter in the stock location. A CTS-V linkage sits behind that spot and an F-body linkage sits ahead of it. The tunnel needs hammering where it meets the bellhousing. No fabrication, and the dash stays. | Check price & fitment | In production |
Oil pan
1 option so far · $499Why you need it: The pan has to clear the crossmember, the ground and, on a 4x4, the front differential. The rear sump clears the steering rack. A baffled pan with a 1/2 in flange is the shape these mounts were drawn around, and the same pan is sold on its own. More: oil pan guide.
Our pick1 option
Only 1 option found so far for the 300ZX. Know another? Tell us →
Steering
1 option so farWhy you need it: The engine and headers have to clear the steering shaft and box, and some swaps need a new shaft or box to make room. The rack stays. Match the pump pressure to the Nissan rack. The bolt-in mount kit is left-hand drive because of the steering shaft, and the pan has to clear the rack. More: steering shaft and box clearance.
Options1 option
We have not confirmed this part on this vehicle yet. If you installed it, tell us what you used and why.
Compare 1 steering option
| Maker / product | Part # | Price | Fits / notes | Where | Status |
|---|---|---|---|---|---|
| 300ZX power steering pump and rack Community | — | The rack stays. Match the pump pressure to the Nissan rack. The oil pan has to clear the rack. The bolt-in mount kit is left-hand drive because of the steering shaft. Unconfirmed Confirm this We have not confirmed this part on this vehicle yet. If you installed it, tell us what you used and why. |
Only 1 option found so far for the 300ZX. Know another? Tell us →
Brakes & booster
1 option so farWhy you need it: A big cam can leave too little vacuum for the booster, and some swaps leave no room for one. The stock booster stays and takes vacuum from the LS. The factory clutch master is 5/8 in and will not fully disengage a T56 slave, so the clutch hydraulics are a transmission part. More: vacuum booster or hydroboost?
Options1 option
We have not confirmed this part on this vehicle yet. If you installed it, tell us what you used and why.
Compare 1 brake & booster option
| Maker / product | Part # | Price | Fits / notes | Where | Status |
|---|---|---|---|---|---|
| 300ZX brake booster Community | — | The stock booster stays and takes vacuum from the LS. Unconfirmed Confirm this We have not confirmed this part on this vehicle yet. If you installed it, tell us what you used and why. |
Only 1 option found so far for the 300ZX. Know another? Tell us →
Ready for the next step when you've picked where the engine sits and an oil pan that clears it.
Next: transmission & driveline →3Transmission & drivelinePick the transmission and how it shifts, then the parts behind it · 3 parts
Transmission adapter & clutch
4 optionsWhy you need it: An LS needs its own bellhousing or adapter and the right flexplate or flywheel, and an electronic transmission needs a computer to shift it. A T56 bolts to the LS bellhousing. A GTO shift linkage puts the shifter in the stock location. The tunnel needs hammering where it meets the bellhousing, and the dash stays. A 4L60E bolts to the LS and needs its own transmission mount. A 4L80E means cutting the tunnel and removing the factory crossmember mounting points. The factory 5-speed and a CD009 each need an adapter plate and a flywheel. A naturally aspirated 5-speed also needs a starter spacer. Some 2+2 cars need less than 1/2 in more room above the bellhousing. The stock-transmission adapter path moves the transmission rearward about 75 mm. More: transmission guide.
Our pick and alternativespick + 2 of 4
We have not confirmed this part on this vehicle yet. If you installed it, tell us what you used and why.
We have not confirmed this part on this vehicle yet. If you installed it, tell us what you used and why.
Compare 4 transmission adapter & clutch options
| Maker / product | Part # | Price | Fits / notes | Where | Status |
|---|---|---|---|---|---|
| Tremec T56 for the 300ZX Listed Our pick | — | The T56 bellhousing bolts to the LS with no adapter plate. A GTO shift linkage puts the shifter in the stock location. A CTS-V linkage sits behind that spot and an F-body linkage sits ahead of it. The tunnel needs hammering where it meets the bellhousing and where the bellhousing meets the firewall. No fabrication, and the dash stays. | Direct from Tremec | ||
| 300ZX 4L80E tunnel fit Community | — | The LS-bell case bolts to the LS. The case is longer and wider, and fitting it means cutting the tunnel and removing the factory crossmember mounting points. There is no production kit for that job. Unconfirmed Confirm this We have not confirmed this part on this vehicle yet. If you installed it, tell us what you used and why. | |||
| 300ZX 5-speed flywheel and adapter Community | — | Keeps the factory manual transmission. It needs an adapter plate and a flywheel. A naturally aspirated case also needs a starter spacer and a little bellhousing work. Flywheels use the twin-turbo ring gear. A single-disc clutch from a 300ZX, 350Z, 370Z or G35 fits that flywheel. Unconfirmed Confirm this We have not confirmed this part on this vehicle yet. If you installed it, tell us what you used and why. | |||
| CD009 adapter plate for a 300ZX Community | — | Keeps a CD009. It needs an adapter plate, a flywheel and a clutch. Whether that plate is the 350Z kit or a different plate is not settled, so measure the tunnel before you buy one. Unconfirmed Confirm this We have not confirmed this part on this vehicle yet. If you installed it, tell us what you used and why. |
Crossmember
2 optionsWhy you need it: The transmission mount usually moves, and the crossmember sets the driveline angle. A T56 kit includes the transmission mount. Any other transmission needs a mount measured after the engine is in. A 4L80E means the factory crossmember mounting points come out. More: getting driveline angles right.
Options2 options
We have not confirmed this part on this vehicle yet. If you installed it, tell us what you used and why.
We have not confirmed this part on this vehicle yet. If you installed it, tell us what you used and why.
Compare 2 crossmember options
| Maker / product | Part # | Price | Fits / notes | Where | Status |
|---|---|---|---|---|---|
| 300ZX 4L60E transmission mount Community | — | The 4L60E bellhousing bolts to the LS. This mount is the piece that has to match that case. The price and the kit that includes it are not pinned down yet. Unconfirmed Confirm this We have not confirmed this part on this vehicle yet. If you installed it, tell us what you used and why. | |||
| 300ZX transmission mount Community | — | A mount kit that includes the transmission mount covers this. Any other transmission needs a mount measured after the engine is in. Unconfirmed Confirm this We have not confirmed this part on this vehicle yet. If you installed it, tell us what you used and why. |
Driveshaft
1 option so farWhy you need it: A different transmission is almost always a different length, so plan on a custom-length driveshaft. The 2-seat wheelbase is 96.5 in and the 2+2 is 100.4 in, so the 2+2 shaft is longer. Measure at ride height. The pinion flange can differ between cars. The stock-transmission adapter moves the transmission back about 75 mm, which changes the length. More: driveshaft length and angles.
Options1 option
We have not confirmed this part on this vehicle yet. If you installed it, tell us what you used and why.
Compare 1 driveshaft option
| Maker / product | Part # | Price | Fits / notes | Where | Status |
|---|---|---|---|---|---|
| 300ZX driveshaft at your measured length Community | — | The 2-seat wheelbase is 96.5 in and the 2+2 is 100.4 in, so the 2+2 shaft is longer. Measure at ride height after the transmission is in. A different transmission changes the length. The pinion flange can differ between cars, so match the flange on yours. Steel, aluminum and carbon are all built the same way: to the length you measure. Unconfirmed Confirm this We have not confirmed this part on this vehicle yet. If you installed it, tell us what you used and why. |
Only 1 option found so far for the 300ZX. Know another? Tell us →
Ready for the next step when you've picked the transmission and how it's controlled, and know the crossmember, driveshaft and flexplate or bellhousing it needs.
Next: accessories & cooling →4Accessories & coolingOne accessory spacing, then cooling and A/C · 3 parts
Accessory drive
1 option so farWhy you need it: The balancer, water pump, brackets and pulleys must all be one spacing, or the belt won't line up. Brackets, balancer and water pump have to be one spacing. A tall truck alternator is tight under the hood. More: accessory drive guide.
Options1 option
We have not confirmed this part on this vehicle yet. If you installed it, tell us what you used and why.
Compare 1 accessory drive option
| Maker / product | Part # | Price | Fits / notes | Where | Status |
|---|---|---|---|---|---|
| 300ZX LS accessory drive Community | — | Brackets, balancer and water pump have to be one spacing. A tall truck alternator is tight under the hood. The exact bracket for a Corvette-offset crank and a low water pump is not settled yet. Unconfirmed Confirm this We have not confirmed this part on this vehicle yet. If you installed it, tell us what you used and why. |
Only 1 option found so far for the 300ZX. Know another? Tell us →
Cooling
1 option so farWhy you need it: LS water pumps put both hoses on the passenger side and the engine needs a steam line, so the radiator needs LS-style ports or an adapter. Both radiator hoses leave the passenger side of an LS, and the steam port has to be plumbed. No radiator is confirmed for this chassis yet. More: radiator, fans and steam line.
Options1 option
We have not confirmed this part on this vehicle yet. If you installed it, tell us what you used and why.
Compare 1 cooling option
| Maker / product | Part # | Price | Fits / notes | Where | Status |
|---|---|---|---|---|---|
| 300ZX radiator for an LS swap Community | — | Both radiator hoses leave the passenger side of an LS, and the steam port has to be plumbed. A direct-fit radiator for this chassis is not settled yet. Unconfirmed Confirm this We have not confirmed this part on this vehicle yet. If you installed it, tell us what you used and why. |
Only 1 option found so far for the 300ZX. Know another? Tell us →
A/C
1 option so farWhy you need it: Where the compressor mounts (high or low) can decide frame, fender and header clearance, so pick it before you buy brackets. The stock Nissan compressor can stay in its original spot, or a GM compressor can be used. The lines for that choice are not confirmed. More: accessory drive guide.
Options1 option
We have not confirmed this part on this vehicle yet. If you installed it, tell us what you used and why.
Compare 1 A/C option
| Maker / product | Part # | Price | Fits / notes | Where | Status |
|---|---|---|---|---|---|
| 300ZX A/C compressor bracket Community | — | The stock Nissan compressor can stay in its original spot, or a GM compressor can be used. The lines and the bracket for that choice are not settled yet. Unconfirmed Confirm this We have not confirmed this part on this vehicle yet. If you installed it, tell us what you used and why. |
Only 1 option found so far for the 300ZX. Know another? Tell us →
More: Accessory drive guide · Cooling guide
Ready for the next step when you've picked one accessory spacing, with the balancer, water pump and brackets to match.
Next: exhaust →5ExhaustHeaders or manifolds that clear where the engine sits · 1 part
Headers & exhaust
1 option so farWhy you need it: Headers are shaped around one chassis's frame, steering and floor, so they have to be made for your vehicle and engine position. 1.65 in primaries and 3 in V-band collectors, drawn for the bolt-in mount position. Headers need no cutting on the car or the engine. Right-hand drive is not covered. More: headers and exhaust by chassis.
Options1 option
We have not confirmed this part on this vehicle yet. If you installed it, tell us what you used and why.
Compare 1 header & exhaust option
| Maker / product | Part # | Price | Fits / notes | Where | Status |
|---|---|---|---|---|---|
| 300ZX long-tube headers Community | — | 1.65 in primaries and 3 in V-band collectors, drawn for the bolt-in mount position. Left-hand drive. Headers need no cutting on the car or the engine. Unconfirmed Confirm this We have not confirmed this part on this vehicle yet. If you installed it, tell us what you used and why. |
Only 1 option found so far for the 300ZX. Know another? Tell us →
More: Headers & exhaust guide
Ready for the next step when you've picked headers or manifolds that clear where your mounts put the engine.
Next: fuel system →6Fuel systemPump, lines and pressure for the LS · 1 part
Fuel system
1 option so farWhy you need it: An LS runs about 58 psi of fuel pressure; a carbureted system runs 5–7 psi. An LS wants about 58 psi with no vacuum reference. The twin-turbo pump is rated for that. The naturally aspirated pump is not. The factory pump controller can stay and runs full speed once the factory computer is gone. More: fuel system & E85 guide.
Options1 option
We have not confirmed this part on this vehicle yet. If you installed it, tell us what you used and why.
Compare 1 fuel system option
| Maker / product | Part # | Price | Fits / notes | Where | Status |
|---|---|---|---|---|---|
| 300ZX fuel pump for LS rail pressure Community | — | An LS wants about 58 psi with no vacuum reference. The twin-turbo pump is rated for that pressure. The naturally aspirated pump is not. The factory pump controller can stay and runs full speed once the factory computer is gone. Unconfirmed Confirm this We have not confirmed this part on this vehicle yet. If you installed it, tell us what you used and why. |
Only 1 option found so far for the 300ZX. Know another? Tell us →
More: Fuel & E85 guide
Ready for the next step when you've decided return or returnless, and sized the pump and injectors for your power and fuel.
Next: wiring, computer & tune →7Wiring, computer & tuneHarness, computer and tune matched to the engine · 1 part
Harness & computer
2 options · $999Why you need it: The computer and harness have to match the engine's crank signal (24x or 58x) and throttle (cable or drive-by-wire), and the tune has to turn VATS off. The stock GM computer is the path, with a harness matched to cable throttle or drive-by-wire. The factory tachometer and alternator light work with the startup tune. The speedometer needs a Dakota Digital SGI-5. Cable-throttle gauge adapters use S13 or S14 1-wire oil and coolant sensors. Drive-by-wire adapters use 300ZX 1-wire sensors. The drive-by-wire chassis line stops at 1995, so a 1996 car is outside that line. Order the harness for the transmission in the car. The factory EFI harness is replaced. The second harness behind the passenger headlight is transferred, and only the single in-car connector between the two can be kept. A 6L80 has a controller wiring option, and the mechanical fit in this tunnel is not confirmed. More: 24x vs 58x, and which harness.
Options2 options
Compare 2 harness & computer options
| Maker / product | Part # | Price | Fits / notes | Where | Status |
|---|---|---|---|---|---|
| Wiring Specialties 300ZX cable-throttle wiring harness Listed | WRS-PROLSxG4-Z32 | $999.00 2026-10-22 | Drive-by-cable harness for a 300ZX using an LS1 cable throttle body, TPS, alternator and LS1 PCM. It covers a 24x crank wheel, and a 58x crank wheel with a crank-signal adapter. The page lists the chassis as 1989-2002, including ABS and convertibles, and the year menu lists 1989-1998. The factory tachometer and alternator light work. The speedometer needs a Dakota Digital SGI-5. Gauge adapters on this harness use 1-wire oil-pressure and coolant sensors of the S13 or S14 type. Order the harness for the transmission in the car. Built to order. | Buy | Small batch |
| Wiring Specialties 300ZX LS3 58x drive-by-wire wiring harness Listed | WRS-PROLS3-Z32 | $999.00 2026-10-22 | Drive-by-wire harness for a 58x Gen IV engine. The chassis line is a US left-hand-drive 300ZX from 1990-1995, or a right-hand-drive Fairlady Z from 1990-1995. A 1996 car is outside that chassis line. The factory tachometer and alternator light work. The speedometer needs a Dakota Digital SGI-5. Gauge adapters on this harness use 300ZX 1-wire oil and coolant sensors. Order the harness for the transmission in the car. Built to order. for 1990–1995 only | Buy | Small batch |
New Already have a tune in it? Send us the file for a free Tune Report: what to fix first, in plain English, within 1 business day. See what you get →
More: ECU comparison · Tuning
That's the last step. Put your picks together in the planner.
Plan your exact combination →Swap kits sold for this vehicle
Why it matters: the kit's mounts decide where the engine sits, and that decides oil pan, header and crossmember clearance. Confirm the kit lists your exact years. More: engine mounts and swap kits.
- 300ZX LSx T56 basic swap kit — LOJ Conversions
Every LS swap also needs
An oil pan that clears
Compare GM LS pans by sump position and depth.
Accessory drive spacing
F-body, car, truck and Corvette offsets.
Fuel system sizing
Injector and pump sizing for your power goal.
A harness, computer and tune
VATS delete, 24x vs 58x, drive-by-wire, harness makers.
A transmission
4L60E to 8HP70 behind an LS.