Alvis Speed 20
Alvis Speed 20 — 4-door sports saloon; 4-seater drop head coupé; sports 4-seater; chassis for bespoke body, Straight-6. Explore engine specifications, fuel economy, dimensions, tire sizes, seating, maintenance and tire-pressure guidance.
About the Alvis Speed 20
Alvis Speed 20 is a 4-door sports saloon; 4-seater drop head coupé; sports 4-seater; chassis for bespoke body in the mid-size class. The available vehicle data lists SA & SB 2511 cc; 3½-litre 3571 cc Straight-6 as an engine configuration, paired with 4-speed manual transmission and a Front-engine, rear-wheel-drive layout. Public source material describes the model in the context of its design, market positioning and vehicle history.
This Alvis Speed 20 guide focuses on the details drivers commonly want to know, including engine information for SA & SB 2511 cc; 3½-litre 3571 cc Straight-6 and 4-speed manual transmission transmission information. Exact specifications should be matched to the relevant model year and market.
Alvis Speed 20 specifications at a glance
Use this table for the model-level essentials. Exact figures may vary by year, trim, engine and market.
| Make | Alvis |
|---|---|
| Model | Speed 20 |
| Model years | Not specified |
| Body style | 4-door sports saloon; 4-seater drop head coupé; sports 4-seater; chassis for bespoke body |
| Vehicle class | Mid-size |
| Manufacturer | Alvis |
| Production | 1932–36; 1165 made |
| Market / country | NL, NZ |
Engine, transmission and performance
Engine information for the Alvis Speed 20 includes SA & SB 2511 cc; 3½-litre 3571 cc Straight-6.. Published power figures include SB 95 bhp @ 4,000 rpm; 3½-litre 102 bhp @ 3,600 rpm; SA to SD 19.82 tax horsepower; 3½-litre 25.63 tax horsepower.. Transmission information includes 4-speed manual transmission.. The listed drivetrain/layout is Front-engine, rear-wheel-drive.
| Engine | SA & SB 2511 cc; 3½-litre 3571 cc Straight-6 |
|---|---|
| Fuel type | petrol |
| Transmission | 4-speed manual transmission |
| Drivetrain / layout | Front-engine, rear-wheel-drive |
| Power | SB 95 bhp @ 4,000 rpm; 3½-litre 102 bhp @ 3,600 rpm; SA to SD 19.82 tax horsepower; 3½-litre 25.63 tax horsepower |
Dimensions, weight and practicality
Dimensions and capacity figures are presented as published source data when available.
| Wheelbase | SA 123 in (3,124 mm); SA option 132 in (3,353 mm); SD option 130 in (3,302 mm); 3½-litre 127 in (3,226 mm) track 56 in (1,422 mm) |
|---|---|
| Width | 65 in (1,651 mm) SA 66.5 in (1,689 mm) SB-SD |
| Kerb / curb weight | 3528 lb (1,600 kg) (4-door sports saloon) |
Alvis Speed 20 performance and economy
| Power | SB 95 bhp @ 4,000 rpm; 3½-litre 102 bhp @ 3,600 rpm; SA to SD 19.82 tax horsepower; 3½-litre 25.63 tax horsepower |
|---|
Alvis Speed 20 other specifications
| Name | Alvis Speed 20 |
|---|---|
| Image | 1933 Alvis Speed 20 SA IMG 2773 – Flickr – nemor2.jpg |
| Caption | 1933 Speed 20 SA sports 4-seater by Vanden Plas |
| Sp | uk |
| Configuration | straight-six |
| Displacement | SA & SB 2511 cc; SC & SD 2762 cc; 3½-litre 3571 cc |
| Bore | SA to SD 73 mm (2.9 in); 3½-litre 83 mm (3.3 in) |
| Stroke | SA & SB 100 mm (3.9 in); SC & SD 110 mm (4.3 in) |
| Block | 4-bearing balanced crankshaft with torsional vibration damper |
| Head | alloy pistons |
| Valvetrain | pushrod overhead valves camshaft drive by duplex chain patented multiple valve springs |
| Fuelsystem | 3 SU carburettors supplied by double petrolift hotspot and dual ignition |
| Fueltype | petrol |
| Oilsystem | forced lubrication to main and big end bearings, rockers and pushrods |
| Coolingsystem | water, thermostatic radiator shutters, centrifugal pump |
Alvis Speed 20 generations and model years
Where a source covers multiple generations, CarCareTool selects the generation(s) that best match this catalog model instead of mixing unrelated variants.
| Generation / scope | Years | Engine | Transmission | Drivetrain |
|---|---|---|---|---|
| Alvis Speed 20 | 1932–36; 1165 made | SA & SB 2511 cc; 3½-litre 3571 cc Straight-6 | 4-speed manual transmission | Front-engine, rear-wheel-drive |
Recommended tire pressure for Alvis Speed 20
Check the vehicle placard or owner’s manual for the manufacturer’s cold inflation pressure. CarCareTool estimates are clearly labelled when an exact verified value is unavailable.
| Load condition | Front | Rear | Status |
|---|---|---|---|
| Normal | 34 PSI | 32 PSI | Estimate |
| Fully loaded | 36 PSI | 35 PSI | Estimate |
Frequently asked questions about Alvis Speed 20
These FAQs are generated automatically for this specific vehicle from the specifications, features and ownership data available in CarCareTool. Questions are selected by relevance so the page focuses on details that can actually be answered for this model.
What engine does the Alvis Speed 20 have?
What tire pressure should I use for the Alvis Speed 20?
What is the best engine oil for the Alvis Speed 20?
What body style is the Alvis Speed 20?
What fuel does the Alvis Speed 20 use?
How much horsepower does the Alvis Speed 20 have?
What are the dimensions of the Alvis Speed 20?
What transmission does the Alvis Speed 20 have?
Is the Alvis Speed 20 FWD, RWD or AWD?
Who makes the Alvis Speed 20?
When was the Alvis Speed 20 produced?
How much does the Alvis Speed 20 weigh?
What class of car is the Alvis Speed 20?
What platform does the Alvis Speed 20 use?
Which markets or countries sold the Alvis Speed 20?
What came after the Alvis Speed 20?
What replaced the Alvis Speed 20?
How often should I check the tire pressure on the Alvis Speed 20?
Should I use the tire sidewall pressure for the Alvis Speed 20?
Does the recommended tire pressure change when the Alvis Speed 20 is fully loaded?
Data sources and verification are available in the page editor; exact specifications can vary by year, market, trim and engine.
Alvis Speed 20 images
Vehicle images are shown from the stored source image records when available.
