This current home garage build-in-progress involves what most would consider to be a sacrilegious engine swap, but before casting any judgement on the project it should be noted that the owner of this 2007 Porsche Cayman S, Joshua Murray, bought the car with a blown engine. A new 6.2 liter GM LS3 crate engine is in the process of being fitted to the standard factory Porsche transmission with use of a Kennedy LS adapter mount and a lot of custom fabrication. Future plans include a Quaife sequential transmission for full throttle clutchless up shifts, as well as the installation of a dry sump oil system. With what started last November is left most currently updated just last week with a post test fitting the rear swaybar and undertray support, while the engine is already in the process of being made to fit. It will be interesting to see this monster hybrid when it is completed, but in the mean time check out the following page for build pictures and a short time lapse video of the impressive project so far.
“After test fitting the LS3 a dozen times I decided the ‘normal’ install position that most folks use is just not that great.”
The CV’s “were pushed back about 4 (inches) from stock, you have to run an electric water pump and options for dry sumps are limited. Also, the front of the motor sits a couple inches low(er).”
Below, the seats are all of the way back to show how far forward the Chevy engine now sits in it’s new Porsche housing.
Hopefully we will be seeing some attention given to suspension modifications next to help compensate for the additional horsepower and torque, which we normally like to see done as the first step of a project. Porsche brakes are notorious for being top notch, so probably not much will be needed to upgrade them other than proper fluid, pad, lines and cooling. Keep an eye on updates in Joshua’s “CaymanRSR” blog HERE.