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Listen to a modified Cayman GT4 scream to 8000rpm and 500bhp

25w ago

4.4K

Last gen Cayman GT4 is a special kind of car it's the most hardcore and focused car for well under 6-figures, (not taking into account Caterham or Ariels which you need a matching pair of WW2 pilots googles). It's the biggest issue perhaps was just how few were build, the production is counted in mere hundreds of which about 50 made it to the UK.

It came with a 385hp from a 3.8 litre naturally aspirated flat-6 with a 6-speed manual as the only transmission option, could it be any better?

How about moving the rev-limiter to a 911 rivalling 8,000 rpm (8,500rpm with optional titanium internals) and a power output of 488 horsepower at the wheels which means somwhere around 550bhp at the crank? Oh and some seriously sweet noise.

The upgrade kit comes courtesy of New York based DeMan Motorsport who are quite experienced in making go-even-faster Porsches.

Their 4.25 litre Street/Race pack gets intake straight from the 911GT3RS and increased bore and stroke, giving you more displacement (they are American after all ;) ), redline is raised to 8000rpm thanks to strengthening conrods. The same engine is also available in the Street/Track set-up, there you get a little less power at 445 horses but a bit more torque, it's also more flexible described as an engine that pulls strong from '2500 to 6000rpm' and doesn't leave you wanting to 're-gear' the transmission.

The pack costs a rather steep $28,500 or about as much as a brand new 3 series, and that's before adding the free-flowing exhaust and Cobb access port which are needed for the raised power output. There is demand for it however, the brands previous 4.0-litre kit clearly sealed well enough to prompted to go a step above, Rick DeMan, told Road and Track "it was demand for more power from customers that drove him to create this engine".

Below is a graph showing the difference between the street/race pack GT4 and a the 911GT3RS, it seems like the GT4 in this tune is quite capable of embarrassing it's a bigger brother on the track.

There are 5 engines build and ready, however if you will want to upgrade your own engine you are looking at a wait time of about 6-weeks.

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