4.5-litre TVR Speed Six Conversion

Owners of TVR Speed Six powered machines will have a new option in the quest for engine longevity at the end of this year - a 4.5-litre, 455bhp(est) conversion from TVR Power.

The new Supersports 4.5-litre package will not be cheap at £8,500 plus VAT, but TVR Power say they have a roster of happy customers with their 4.3-litre, 430bhp conversion. That version is still available at £6,500 plus VAT, if you want to join the ranks of the 57 cars they've converted in the last eight months. The extra cost of the 4.5 conversion covers the need for cylinder liners and a lot of additional machining that's required, all of which is carried out in house.

The package includes:

Steel billet knife-edge crank shaft assembly
H section billet connecting rods
Interlock steel top hat liners
Bored and honed (original) aluminium cylinder block
Bespoke pistons
Lightened flywheel
Ported cylinder head
CC Combustion chambers
Performance camshafts
High flow injectors
Bespoke map (on all applications) MBE only

"After the success of our 4.3-litre engine we have taken the power, torque and reliability to the next level. We have the confidence in this engine to extend the 5 year unlimited mileage warranty to our customers who choose to upgrade.

"This package will be available from December 2010 after it has been through vigorous road and track tests including the Nurburgring and all over Europe in TVR Power's own Sagaris," the company says.

Plenty of time to start saving then...

Comments (287) Join the discussion on the forum

  • soad 24 Feb 2010

    Looks good to me, thought Melling offered something similar in the past.

  • OatSy 24 Feb 2010

    I think this might be on my Christmas list :-). Nothing wrong with my engine though so should I do it? scratchchin

  • JR 24 Feb 2010

    It's almost as if Haymarket deleted a topic to create a news article.

    Well done Dom.

  • Oddball RS 24 Feb 2010

    I know very little about these 'kits' 'upgrades' whatever you want to call them and i know you have to cover development costs, AND that a lot of work is done on them by reading the published list, but they do seem a little expensive? especially the difference between the 4.3l and the 4.5l? Just a casual engine related comment.

  • mgv8 24 Feb 2010

    Now would that fit an an MGC GT?

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