Makes › Lamborghini › 400 › 400 GT Monza (Neri and Bonacini) · Coachbuilt · 1966
Lamborghini
400 GT Monza (Neri and Bonacini)
One-off two-seater berlinetta on a 400 GT Interim chassis with unique bodywork by Neri and Bonacini.
Still being researched: full specifications. Everything shown is checked against the cited sources. Know more? Send us a source.
Photo: Brian Snelson · CC BY 2.0
Contents
01Overview
At a glance
- Built
- Not yet verified
- Years
- 1966
- Engine
- V12, four-cam · 3,929 cc / 3.9 LFactory: 3,929 cc
- Power
- 239 kW / 324 PSFactory: 320 hp · converted
- Top speed
- Not yet verified
- Body
- Neri & Bonacini
- Designer
- Neri & Bonacini (Modena coachbuilder)
- In this archive
- Not yet verified
- Surviving
- 1 (independently researched)
Sources and any conflicting figures are in the sections below.
Why it matters
This is a one-off coachbuilt special by Neri & Bonacini of Modena, built on a 350 GT-based chassis with the engine of a 400 GT 2+2. Its styling echoes the Miura, and the car was never a series model.
How rare is it?
Six separate kinds of rarity – never combined into one number.
Each kind of rarity is rated separately and never combined.
Photos
Exterior, interior and detail photos with their licences.
Lamborghini 400 GT Monza (Neri and Bonacini) (Wikimedia Commons search)
Photo: Brian Snelson · CC BY 2.0
Lamborghini 400 GT Monza (Neri and Bonacini) (Wikimedia Commons search)
Photo: Brian Snelson from Hockley, Essex, England · CC BY 2.0
02Production & history
Production
Every figure says what it counts.
| What is counted | Figure | Basis | Status |
|---|---|---|---|
| Total model productionone-off; the single example built | 11 | Surviving examples | Independently researched |
Independent counts (e.g. engine and colour) are never combined into a calculated figure. Surviving examples are never presented as original production.
History
The 400GT Monza was a prototype first shown in 1966 and then hidden from public view for 35 years before it emerged from its owner's garage. Octane notes that just three Lamborghini 350/400GT chassis received special coachwork, one of which had been missing since the 1960s.
Variants
How each version differs from the standard 400 GT Monza (Neri and Bonacini).
No variants documented yet. Have a source? Contribute it.
03Specifications
Technical specifications
Engine
| Engine family | Not yet verified |
|---|---|
| Engine code | Not yet verified |
| Layout | V12, four-cam1 Independently researched |
| Displacement | 3,929 cc / 3.9 LFactory: 3,929 cc2 Independently researched |
| Bore | Not yet verified |
| Stroke | Not yet verified |
| Compression ratio | Not yet verified |
| Fuel system | Not yet verified |
| Induction | Sidedraught Weber carburettors2 Independently researched |
| Power | 239 kW / 324 PSFactory: 320 hp · converted2 Independently researchedOctane says the 1960s Italian SAE figure is probably understated; that estimate is not used here. |
| Power at | Not yet verified |
| Torque | Not yet verified |
Transmission & drivetrain
| Gearbox | Lamborghini gearbox and differential2 Independently researched |
|---|---|
| Gears | Not yet verified |
| Driven wheels | Not yet verified |
Chassis, body & dimensions
| Chassis | Modified 350 GT chassis2 Independently researched |
|---|---|
| Front suspension | Not yet verified |
| Rear suspension | Not yet verified |
| Brakes | Not yet verified |
| Steering | Not yet verified |
| Body construction | Aluminium panels laid over a wire birdcage former1 Independently researched |
| Wheelbase | Not yet verified |
| Length | Not yet verified |
| Width | Not yet verified |
| Height | Not yet verified |
| Front track | Not yet verified |
| Rear track | Not yet verified |
| Kerb weight | Not yet verified |
| Dry weight | Not yet verified |
Performance
| Maximum speed | Not yet verified |
|---|---|
| 0–100 km/h | Not yet verified |
| Fuel tank | Not yet verified |
“Not yet verified” means no source has been checked for that value yet. Nothing is estimated to fill a gap.
04Colours & options
Factory colours & interiors
Original paint and trim, with the number of cars in each where a source gives it.
Not yet documented. Have a source? Contribute it.
Factory options & codes
Codes are shown exactly as written by the manufacturer.
Not yet documented. Have a source? Contribute it.
05Individual cars
Chassis register
Every documented car, with its colours, history and where it is now. Open a row for the full record. Known chassis are not automatically authenticated originals.
Not yet documented. Have a source? Contribute it.
Competition history
Every race result of the individual cars, in date order. Click a chassis number to open its full record in the register.
Not yet documented. Have a source? Contribute it.
Auction & sale history
Documented public sales of the individual cars. Click a chassis number to open its full record in the register.
Not yet documented. Have a source? Contribute it.
See one in person
Museums where an example of this car can be seen.
No example is documented on public display yet. Have a source? Contribute it.
06Reference
Identification guide
How to tell an original from a replica or later conversion.
Being verified against factory or registry sources before it is published. Have a source? Contribute it.
Sources
Each number links to the exact facts it supports.
-
1
Feature: Lamborghini Monza (Discovered after 35 years) Level C Malcolm McKay · Octane magazine
- this was always intended to be a one-off
- with its fourcam V12
- We built up the shape with a birdcage of stiff wires
-
2
Octane: Lamborghini 400GT Monza (Back in the Limelight) Level C Keith Adams · Octane magazine
- It's a 3929cc version of the V12
- sidedraught Weber carburettors used in the 350GT
- Power is 320bhp through the sidedraught Weber carburettors
- Lamborghini gearbox and differential
- sits on a modified 350GT chassis
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