Many Austin Healey cars were fitted with an overdrive, an electro-mechanical extra gear which can be engaged at the flick of a switch to aid lower rev cruising or to provide 'additional' ratios on 3rd and 4th gear in competiton environments.

We offer a range of overdrive components and also complete overdrive units available for outright sale, no exhange required.

Overdrive

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COMPLETE OVERDRIVES

Fully reconditioned and available for outright sale in two specifications.

Race 22% which is up-rated and has no speedo drive, or Road 28% which is fast road / standard with a 15 tooth speedo drive. Requires adaptor plate to suit gearbox.

Overdrive
Code: OVD210A
Sku: OVD210A
Availability: In Stock
OVD210A
£1,495.00
Qty
Code: COVD211A
Sku: COVD211A
Availability: In Stock
COVD211A
£1,595.00
Qty

Operating Pistons

Reproduction of the later original O ring type which will not wear the case.

 

Overdrive
Code: OVD150
Sku: OVD150
Availability: In Stock
OVD150
£17.50
Qty

Competition Operating Valves

This valve allows the overdrive to disengage faster - essential for drivers who want an instant response when the switch is flicked out - road or race.

 

Overdrive
Code: OVD159
Sku: OVD159
Availability: In Stock
OVD159
£0.60
Qty
Code: OVD160
Sku: OVD160
Availability: In Stock
OVD160
£9.50
Qty
Code: COVD155
Sku: COVD155
Availability: In Stock
COVD155
£19.50
Qty

Solenoid Brackets

Reproduction of the original open and closed type, machined in house.

Overdrive
Code: OVD195
Sku: OVD195
Availability: In Stock
OVD195
£10.95
Qty
Code: OVD197
Sku: OVD197
Availability: In Stock
OVD197
£59.95
Qty
Code: OVD196
Sku: OVD196
Availability: In Stock
OVD196
£58.50
Qty

OVERDRIVE PROPSHAFT FLANGE

Reproduction of the original

Overdrive
Code: OVD235
Sku: OVD235
Availability: In Stock
OVD235
£78.50
Qty

OVERDRIVE DRAIN PLUG

This Overdrive Drain Plug is designed and manufactured in-house. It is made from Brass as the original, suitable for the Austin-Healey BN1 to BJ8 Models or any A type overdrive.

Overdrive
Code: OVD173
Sku: OVD173
Availability: In Stock
OVD173
£1.53
Qty
Code: OVD174
Sku: OVD174
Availability: In Stock
OVD174
£38.50
Qty

OVERDRIVE DRAIN PLUG SOCKET

Our CAD Design Team have developed a Drain Plug Socket to aid the fitting and removal of the Overdrive Drain Plug. CNC machined from steel and zinc plated silver with a ¾ hexagonal drive so it can be operated with a socket and bar or even a torque wrench.

Overdrive
Code: OVD174T
Sku: OVD174T
Availability: In Stock
OVD174T
£42.50
Qty

OVERDRIVE DRAIN PLUG SPANNER

Drain Plug Spanner manufactured from steel and plated black which can be assisted with a hammer.

Overdrive
Code: OVD174S
Sku: OVD174S
Availability: In Stock
OVD174S
£22.50
Qty

Overdrive Filter

Strong stainless steel reproduction of the original type.

 

Overdrive
Code: OVD175
Sku: OVD175
Availability: In Stock
OVD175
£16.15
Qty

OVERDRIVE ADAPTOR PLATES

Cast to the original design using higher grade aluminium and heat-treated we have manufactured these as now in short supply.

Overdrive
Code: OVD146
Sku: OVD146
Availability: In Stock
OVD146
£195.00
Qty
Code: OVD147
Sku: OVD147
Availability: In Stock
OVD147
£195.00
Qty

A Little About Us...

Company Info

Welcome to the Denis Welch Motorsport website for Performance Parts. We cater for every aspect of work on your classic car be it road, race or rally, using our unrivalled success in many aspects of Motorsport to make your car as successful and reliable as possible.

 

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Safe Delivery

UPS Delivery

If purchasing online the UPS carriage calculator will automatically calculate the postage cost. Please be assured that our Parts Team will always double check all postage charges to ensure the most cost effective method of postage is given on the final dispatch.

Secure Payment

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Secure Payment

HSBC Secured System

If purchasing online the UPS carriage calculator will automatically calculate the postage cost. Please be assured that our Parts Team will always double check all postage charges to ensure the most cost effective method of postage is given on the final dispatch.

Get in Touch

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Get in Touch

Contact Details

Parts Hotline +44(0)1543 472244
Office +44(0)1543 472214
Fax +44(0)1543 472339
E-Mail sales@bighealey.co.uk

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