A C Roney Sports Cars         07968 624949


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A C Roney Sports Cars © 2009

Exterior Features

Interior Features

Mechanical Features

Date Registered    April 1988

Registration          TVR 420S

Chassis                    SA9DH....

Engine                     NCK075

Mileage                   58,944

Exterior Colour     Graphite Gray

Aramid Composite body

Whale tail/duck pond

Metalic paint

Interior Colour      Light grey leather

English leather upholsty

Power steering

Hi Fidelity sound system

NCK modified, gas flowed and balanced Rover V8 4228cc

Engine Output     300 b.h.p.

Top Speed          over 165 m.p.h.

0 - 60 m.p.h. in under 5 secs

5 Speed Manual

Stainless steel exhaust

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Telephone +44 (0)7968 624949

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TVR 420 SEAC 1988


Full Leather Interior Light Grey with Black Piped Edging

Power Steering

Engine and Transmission

Model History


Body and Chassis

SEACs are two inches wider and seven inches shorter than a 390SE

The early cars were 200lbs lighter than the GRP equivalent, for example a 390 body is twice as thick.

Kevlar proved to be very difficult to cut and work with and TVR were struggling to make any profit even at the initial price of £29,500 as it was. The labour involved in laying up was much higher and the finish tended to be ripplely which resulted in cars being re bodied.

The first 3 had 350 style dashes (and 2 part rear bodywork) changing to a new style with four gauges in top centre with no bulky box of switches arid radio etc. Later 450's had the dash with five gauges in top centre and turned slightly towards the driver. I believe that there are 1 maybe 2 stainless chassis cars about, one probably was Peter Wheeler's own SEAC.

Chris Schirle confirmed the latter saying that of the Stainless chassis built for the racer 1 or 2 disappeared into road cars. He also added that on several chassis CDS (Cold drawn seamless) tubing rather than Electric resistance welding tube was used.


Chris Schirle:

Peter Wheeler always wanted to build an engine shop within the factory but it was too complex - we didn't have the room or the budget for all the machinery.

So he then set the task to find an engine builder - John Eales initially (3.9's) then Graham Nash at NCK who built the SEAC engines.

The SEAC specification included:

Bore: 93.5mm and stroke 77mm (420) or 80mm (450)
Cosworth forged pistons No.PM0209
Forged rods
Tufrided crank, I think with standard bearings
Heads were fully ported (in fact over-ported for road use)
TVR Stainless Steel big valves (as Griffith 500 etc) 42.8mm inlet & 36.8mm exhaust
TVR grind or H234 Kent cam with hydraulic lifters and standard rocker gear. A few had solid lifters
Lightened and balanced

Jaguar AFM and injectors
Weber adjustable FPR set to 45psi

Standard trumpets on a partially ported manifold
Throttle was normally 70mm

Car History

This is a very rare TVR with a great history.  One of the last 19 to be built in 1988, one of a total of only 37 cars produced between 1986-1988.

Verified low mileage with every MoT Certificate, full service history (just serviced by TVR Power) with a fully stamped original service book and documentation.

Full body restoration and respray by Surface & Design.  New hood and carpets by D & C Trim, both at the Old TVR Factory, Bristol Avenue, Blackpool.  All three companies have their roots home grown at TVR.

The Chassis is in very good condition, Shutz wax-oiled by TVR Power to preserve it for many more years to come.  The front suspension is rose-jointed and also has a Stainless Steel exhaust system.

This car represents a true investment, an appreciating piece of TVR history.