5300 GT Strada

Chevrolet power, Livorno chassis

Giotto Bizzarrini turned the Iso A3/C into his own road car, with a Corvette 327 behind the front axle. Factory history cites 133 across all 5300 GT versions; auction catalogues identify 86 alloy-bodied Stradas.

View details

Market value · road

$750K–$1.2M

Typical $950K · 4 sales · +13% vs ’21–’22

$638K$1.3M
Open Market & Price

Market value · road

$750K–$1.2M

Typical $950K · 4 sales · +13% vs ’21–’22

$638K$1.3M
’13’24
Market history · in the terminal
Open Market & Price
Top speed
249–275 km/h (factory brochure · final-drive dependent)
Power
350 SAE bhp (factory standard · 420 optional)
Engine
5'354 cc (Chevrolet 327 V8)
Transmission
4-speed (manual · rear-wheel drive)
Layout
Front-mid (engine behind front axle)
Alloy Stradas
86 (auction-catalogue count)

Market & Price

The price and the proof

A terminal for one car: the model curve over the documented record, the benchmarks it is measured against, and the instruments that read it.

Records: 1968 Strada — $1,010,800 · Keno Brothers Rolling Sculpture, New York · Nov 2015; 1968 Strada Alloy · IA3 0323 — $915,250 · RM Sotheby's Monterey · 18 Aug 2023. 7 documented road sales on file · 2013–2024.

HCN:5300GTSTLive model
$950'0005.9% · 12M
$1M$2M$3M20182020202220242026CovidRate shockS&P 500
Model curve · anchored to 7 documented salesnot investment advice
The readouts · model figures against the benchmarks7 documented anchors · last sale 26 mo ago

Compound annual growth

WindowThis car*S&P 500Gold
1Y+5.9%+18.8%+21.9%
5Y+5.7%+11.4%+17.6%
10Y+0.8%+13.3%+11.8%

*Modeled price CAGR · S&P is a price index, no dividends

Deepest drawdown · model window

This car*-49.3%Feb 2015 → Mar 2020 · not recovered
S&P 500-20.3%Dec 2021 → Oct 2022 · recovered Dec 2023
Gold-38.4%Oct 2012 → Dec 2015 · recovered Jul 2020

Forecast ladder · model quantiles

HorizonP10P50P90
+6M$876K$968K$1.1M
+12M$867K$987K$1.1M
+24M$857K$1.0M$1.2M

Median path with the 10th and 90th percentile · not investment advice

Transaction ledger · documented sales

7 of 7 recorded sales · shown in USD · recorded currency in each record

Public results rose from the low-$400'000s in 2009 to $1'010'800 in 2015, then settled between $775'000 and $915'250 in the two latest documented USD sales. The thin market makes individual history more important than a smooth trend line.

Price range · road · openConfidence · mediumSix documented USD auction sales from 2009 to 2023 anchor the band, with a 2024 RM Sotheby's sale at €736'250 as a cross-check rather than an FX-converted ledger entry. Alloy-body authenticity, chassis history, original specification and restoration quality can move an individual car outside it.

Floor

$750K

Typical

$950K

Ceiling

$1.2M

Estimate band for good road cars. 4 documented sales since 2019 plotted below.

$615K$750K$950K$1.2M$1.3M
Hover the spectrum to read a value, or a dot for the sale behind it.

Band and axis shown in USD. Sale positions use indicative fixed-rate conversion to USD; sale readouts retain recorded currencies. Indicative band for documented, alloy-bodied road cars. Iso A3/C racers, Corsa cars, Spyders, America variants, recreations and modern Revival cars are separate comparables.

Road record

$1,010,800

1968 Strada

Keno Brothers Rolling Sculpture, New York · Nov 2015

Road record

$915,250

1968 Strada Alloy · IA3 0323

RM Sotheby's Monterey · 18 Aug 2023

Instrument calibration for this file is in progress — the terminal above reads the documented record directly.

Amounts are reported sale prices in USD. No currency conversion is applied; buyer-premium semantics are stated only where the source states them.

Overview

Iso origins, then a name of its own.

Iso showed two Giugiaro-designed Grifos at Turin in 1963. The A3/L was the road car; Bizzarrini's Livorno consultancy built the lower A3/C for competition, placing Chevrolet's 327 V8 behind the front axle in a fabricated platform chassis.

Bizzarrini and Iso separated in 1965. The engineer continued the A3/C idea under his own name as the 5300 GT Strada for the road and Corsa for competition. Current Bizzarrini material credits Giorgetto Giugiaro with the form and Piero Drogo with refinements.

Production ended with the company's collapse in 1968. The surviving record is untidy: Bizzarrini currently cites some 133 cars across Strada, America and Corsa, FIA research cites 124 at closure, and auction houses commonly identify 86 alloy Stradas. Unfinished chassis, later assembly and reconstructed cars make expert inspection part of the asset.

Power
350 SAE bhp
5300 GT production
133 across all versions
Alloy Stradas
86
Designer
Giorgetto Giugiaro
Built in
Livorno

Reference

Technical specifications

Powertrain

Engine
Chevrolet Corvette 327 V85'354 cc in the factory brochure, cast-iron, naturally aspirated OHV
Factory output
350 SAE bhp at 5'400 rpmstandard brochure tune; four Weber carburettors raised the claim to 420 SAE bhp
Carburation
Single four-barrel Holley or four Weber 45 DCOE 12standard and optional factory specifications; surviving cars vary
Transmission
4-speed manualBorg-Warner T10 and Muncie units are documented
Drive
Rear-wheel drive

Chassis

Structure
Fabricated steel platform, semi-monocoque bodyalloy skins riveted to the frame on early cars
Front suspension
Independent unequal wishbonescoil springs, telescopic dampers, anti-roll bar
Rear suspension
De Dion axlesome related 5300 GT variants used independent rear suspension
Brakes
Four-wheel solid discsDunlop or Campagnolo hardware depending on chassis
Wheelbase
2'450 mm
Body
Aluminium on the documented Strada setglassfibre appears on related America and IRS cars

Performance and production

Top speed
249–275 km/hfactory brochure claim, dependent on final-drive ratio; RM catalogues cite up to 290 km/h, while a period Quattroruote test recorded 259 km/h on chassis 0234
Weight
1'250 kgfactory DIN unladen figure; competition specifications vary
5300 GT total
Some 133current Bizzarrini history, covering Strada, America and Corsa
Alloy-bodied Stradas
86figure used by Gooding and RM Sotheby's
Count caveat
No single accepted totalFIA research says 124 cars at the September 1968 closure; older auction research ranges from 100 to 149 when Iso A3/C and other 5300 GT variants are included

HICON BID

Buying interest, silently.

A HICON Bid is a confidential expression of buying interest on the Bizzarrini 5300 GT Strada file — never public, never shown to other members. It is not a binding purchase, and HICONIUM holds no funds.

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HICON Bids are a member instrument. Sign in to place one.

The vault

Open a file on yours.

You keep one? The record starts in your garage — identity, papers, photography, and the market evidence this file already carries, bound to your chassis.

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The variants

One badge, 2 executions

The register separates the 5300 GT Strada into its documented executions. One reference silhouette per execution — each opens as its own file as the archive fills.

Bizzarrini 5300 GT Strada Strada — reference silhouetteStrada01
Reference in preparationCorsa02

2 executions on file · references drawn to the house standard

The cars

The 5300 GT Strada register

Documented individual cars — chassis, colour, ownership and sale history. Open one for its full provenance. Public records only; members see the complete registry.

03 documented · public records

The hands

The people behind the car

The people whose work shaped the Bizzarrini 5300 GT Strada.

Giotto Bizzarrini

Founder and chief engineer

Developed the Iso Grifo A3/C, carried its front-mid-engine layout into the 5300 GT and built the car in Livorno under his own name after the split from Iso.

Giorgetto Giugiaro

Body designer

Drew the low Grifo A3/C form that became the 5300 GT while working at Bertone.

No free period portrait on record

Piero Drogo

Body development

Refined the A3/C-derived body and built early riveted aluminium shells in Modena.