Makes › Iso › IR 300 (IR 340) · Rare production
Iso
IR 300 (IR 340)
Iso Rivolta IR 300 grand tourer with American V8; reportedly 167 IR 340 cars.
Still being researched: why it matters, identification guide, full specifications. Everything shown is checked against the cited sources. Know more? Send us a source.
Photo: Lebubu93 · CC BY-SA 3.0
Contents
01Overview
At a glance
- Built
- Not yet verified
- Years
- Not yet verified
- Engine
- V8 · 5,300 cc / 5.3 LFactory: 5.3 L
- Power
- 224 kW / 304 PSFactory: 300 hp · converted
- Top speed
- Not yet verified
- Body
- Not yet verified
- Designer
- Not yet verified
- In this archive
- Not yet verified
- Surviving
- Not yet verified
Sources and any conflicting figures are in the sections below.
Why it matters
Not yet documented. Have a source? Contribute it.
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.
Iso IR 300 (IR 340) (Wikimedia Commons search)
Photo: Lebubu93 · CC BY-SA 3.0
Iso IR 300 (IR 340) (Wikimedia Commons search)
Photo: Jagvar at English Wikipedia · Public domain
Iso IR 300 (IR 340) (Wikimedia Commons search)
Photo: Thesupermat · CC BY-SA 4.0
02Production & history
Production
Every figure says what it counts.
No production figures recorded yet.
History
Iso grew out of Isothermos, a company that made refrigerators before the war, and moved into scooters and motorcycles after 1948. The Rivolta was the first car in Iso's post-war grand tourer range.
The article's production figure is 799 cars built between 1963 and 1970, for the Rivolta family as a whole (the article does not separate IR 300 from IR 340).
Variants
How each version differs from the standard IR 300 (IR 340).
No variants documented yet. Have a source? Contribute it.
03Specifications
Technical specifications
Engine
| Engine family | Chevrolet small-block V81 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry. |
|---|---|
| Engine code | Not yet verified |
| Layout | V81 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry. |
| Displacement | 5,300 cc / 5.3 LFactory: 5.3 L1 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry. |
| Bore | Not yet verified |
| Stroke | Not yet verified |
| Compression ratio | Not yet verified |
| Fuel system | Not yet verified |
| Power | 224 kW / 304 PSFactory: 300 hp · converted1 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry. Rating standard not stated. |
| Power at | Not yet verified |
| Torque | Not yet verified |
Transmission & drivetrain
| Gearbox | Four-speed BorgWarner manual1 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry. The article does not state manual; the gearbox is described as four-speed. |
|---|---|
| Gears | 41 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry. |
| Driven wheels | Not yet verified |
Chassis, body & dimensions
| Chassis | Lightweight, rigid box-section chassis (designed with Bizzarrini and Raggi)1 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry. The article describes the family's chassis, not necessarily the IR 300 alone. |
|---|---|
| Front suspension | Coil springs with anti-roll bar1 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry. |
| Rear suspension | De Dion axle with coil springs1 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry. |
| Brakes | Four-wheel disc brakes (standard)1 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry. |
| Steering | Not yet verified |
| Body construction | Not yet verified |
| 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.
Not yet documented. Have a source? Contribute it.
Sources
Each number links to the exact facts it supports.
-
1
Escaping Budapest With The Italian Style And American Horsepower Of An ISO Rivolta IR300 Level D Petrolicious
- the developers chose a Chevy small-block
- The combination of the 300hp V8
- a less sophisticated 5.3-liter Corvette V8
- mated it to a proven four-speed BorgWarner transmission
- a lightweight, rigid box-section-type chassis
- coil-spring suspension setup with an anti-roll bar in the front
- a DeDion rear axle with coil springs in the back
- four-wheel disc brakes came standard
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