Alfa Romeo · The Classic Era

The dossiers

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  1750 GTV and 2000 GTV (105 series) — the 105-series coupé in its definitive collector form; Autodelta preparation for the ETCC, the twin-cam at 1,779cc and 1,962cc, and why the 2000 manual is the correct specification to buy

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  Spider Series 1 — Duetto (1966–1969): the Pininfarina round-tail; ~6,325 built; the rare 1600 and the definitive 1750 specification; the round-tail premium and why US-market cars are structurally different from European equivalents

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  Spider Series 2 — Kamm-tail (1970–1982): the Kamm-tail resolves the aerodynamic criticism; 1750 to 2000cc transition; the 2000 Veloce is the specification the market prices — the standard Berlina Spider at a widening discount

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  Spider Series 3 (1983–1989): injection replaces twin carburettors; Bosch L-Jetronic on US cars, Spica on late European; why the Series 3 is the entry point and not the collector peak

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  Spider Series 4 (1990–1993): revised nose and tail, Series 3 mechanicals; the last Pininfarina Alfa; lowest production of the four series; the value gap to Series 1 is wider than the engineering warrants

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  Alfetta GTV6 — the Busso V6 in the definitive GTV body; 158bhp, 2.5-litre 60° V6, five-speed transaxle; the premium over the four-cylinder GTV is justified by the driving experience and unjustified by the market

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  75 Turbo Evoluzione — ~500 produced for ETCC homologation; 155bhp Group A, 240bhp competition; rear-wheel drive via de Dion axle; the most concentrated performance Alfa Romeo of the decade and the most demanding to authenticate

The era

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  Orazio Satta Puliga and the Giulia platform: the engineering brief that produced the 105-series, the twin-cam's evolution from 1290cc to 1962cc, and why the platform outlasted its commercial context by fifteen years

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  Autodelta and the ETCC decade: Carlo Chiti's engineering team, the GTA homologation (1750 examples required, ~500 built), and the competition results that created the halo premiums the 105-series market prices today

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  IRI ownership and the near-collapse: the 1980s production crisis, the Fiat acquisition in 1986, and how the transition from independent manufacturer to Fiat subsidiary affected build quality — and what it means for the collector hierarchy between pre- and post-1986 cars

Buying & ownership

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  Twin-cam inspection protocol: the DOHC chain-and-tensioner condition, valve clearances (the one non-negotiable pre-purchase check), and the specific head gasket failure mode that ends otherwise sound engines

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  Coachwork rust survey: the 105-series sill and seatbox corrosion pattern, inner-arch condition behind the rear wheels, and the repair scope that separates a driver from a restoration — the single biggest variable in market price

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  Autodelta provenance: the chassis-number confirmation process, the factory racing records at Arese, and what a genuine GTA homologation car requires in documentation before it can be sold as such

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  Ownership costs by model: the annual maintenance budget for a Series 2 Spider versus a GTV6, the specialist network in the UK and Italy, and the parts availability contrast between pre-1980 and post-1980 cars