Tag Archives: Torqueflight

30% More Power – Bristol 411

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The first blog I did on a Series 3 411 has been lost in the mists of Rowdy but a couple of photo’s remain.

Today’s model is a first series Bristol 411 built from 1969 to 1971 the first Bristol model to feature a big block B series 335 hp 6,277 cc / 383 cui motor with 30 % more horsepower than the previous model that gave this car a 140 + mph capability.

The original series 411 models featured slightly enlarged windscreens than the 410 an almost imperceptible difference that can be seen in this photo of a 411 in the foreground and 410 to the left of the photograph.

Sir George White one of the three Directors in Bristol Cars in 1969 suffered serious head injuries in a road accident in September 1969 so it was left to his partner Tony Crook to take over the reins at Bristol in Sir George’s absence a process that ended with Tony buying his partner out in 1973.

To help feed all that power to the road the rear axle was fitted with a limited slip differential (LSD) that allows some difference in angular velocity of the output shafts as long as there is some traction available on at least one of the wheels.

With thanks to the PistonHead who kindly brought this car to the recent Sunday Service at the BMW Plant at Cowley and to Cristopher Balfour who’s book ‘Bristol Cars a very British story‘ provided many of the insights in today’s blog.

Hope you have enjoyed today’s TV detective edition of ‘Gettin’ a lil’ psycho on tyres’ and that you will join me again tomorrow. Don’t forget to come back now !

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Lynley mystery – Bristol 410

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The Bristol 410 was the fourth Bristol model to use the chassis architecture laid out for the 407 model.

Using the A block Chrysler engine now with a swept volume of 5211 cc / 318 cui for the last time before switching to the larger Chrysler B block for subsequent models the 410 marked a return to a floor mounted shift for the Torqueflight gearbox after US legislation had outlawed the previous push button system.

A Bristol 410 has two chrome strips running the length of the vehicle a feature unique to this Bristol model.

Fitted with ZF power steering as standard the 410 had a lower centre of gravity than the yet to be blogged 409 thanks to smaller 15″ diameter wheels down from 16″ on the previous model.

The 410 was the first Bristol fitted with separate front and rear brake circuits the servo’s. The servo’s were housed in a compartment between the front of the drivers door and the rear of the front wheel arch, the top hinge of which can just be distinguished below the badge in the photo above.

Some of you may recognise this as the model that Inspector Lynley drives in some episodes of the television series The Inspector Lynley Mysteries, mysteriously in the novels by Elizabeth George on which some of the episodes are based Lynley is actually described as driving a Bentley.

As ever exclusivity is the watch word for this manufacturer with just 79 Bristol 410’s being built between 1968 and 1969.

With thanks to the PistonHead who kindly brought this car to the recent Sunday Service at the BMW Plant at Cowley and to Cristopher Balfour who’s book ‘Bristol Cars a very British story‘ provided many of the insights in today’s blog.

Hope you have enjoyed today’s TV detective edition of ‘Gettin’ a lil’ psycho on tyres’ and that you will join me again for Ferrari Friday tomorrow. Don’t forget to come back now !

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Going it alone – Bristol 407

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Just 88 Bristol 407’s were built between 1961 and 1963.

The 407 was the first Bristol model launched after ownership of the Bristol Car Company had been taken over by the Bristol Aeroplane Company founders grandson Sir George White 3rd Bt in partnership with Bristol’s preeminent retailer Tony Crook in September 1960.

The exterior of the Bristol 407 is distinguished from its predecessor the 406, which I have yet to write a blog about, by a horizontal bar across the radiator grill at the front and twin exhaust pipes at the rear.

Underneath the car could not be more different, the 407 is powered by a Canadian built 5130 cc / 313 cui Chrysler V8 connected to a push button operated Torqueflight transmission, a combination which first came to the attention of of Sir Reginald Verdon Smith the Bristol Aeroplane Company director in the 1950’s on a private visit to Canada.

Bristol attempted to develop it’s own aluminium block V8 in the 1950’s but, insufficient experience casting aluminium and lack of capital thanks to the spiralling cost of aircraft development elsewhere in the Bristol group of companies meant that the V8 never got beyond an underdeveloped prototype stage at which crankshaft main bearing housing distortion presented an obstacle to production.

Changing to the Canadian V8 from the hitherto BMW inspired straight 6 necessitated replacing the former transverse leaf front suspension with a pair of coil springs and replacing the highly praised rack and pinion steering with Marles worm driven steering.

The chassis was fitted with Dunlop disc brakes all round and the aluminium body production was moved from Jones Brothers to Park Royal Vehicles in London.

The 407 chassis set out the basic architectural features for all Bristol’s with many incremental modifications right through to the introduction of the Bristol Fighter in 2004.

This particular model photographed at a Loton Park VSCC meeting is registered in Sweden, notice that it is a Right Hand Drive model, Sweden switched to Left Hand Drive in September 1967 to bring it into line with it’s Scandinavian neighbours.

My thanks to Christopher Balfour who’s book ‘Bristol Cars a very British story‘ provided many of the insights in today’s blog.

Hope you have enjoyed today’s Marles worm driven steering edition of ‘Getting a lil’ psycho on tyres and that you’ll join me again tomorrow for a look at the even rarer Bristol 410. Don’t forget to come back now !

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