Quote Originally Posted by Warsteiner View Post
I'm seriously debating pulling out my 6.0 single turbo and dropping in a toyota 2jz stroker engine with twin 67's. For those of you who don't know what that is... its a twin turbo toyota supra engine at 3.4L. At 30 psi it should make about 850hp with torque to boot being a straight six. Is this absurd? Or downright cool as hell. I can't decide. The reason i ask is a friend has this engine and was swapping it into an RX7. Now he wants turbo LSx power. And a Z71 ecsb on 33's with a 10,000 rpm straight six blowing out the 4" exhaust just tickles me. I've never been brand specific anyway, i like variety. I love old flathead V8's as well as triple rotor mazda engines and forced induction anything... I love big v-twin harley engines and i have appreciation for the 2.5L v-10's and v-12's that dominate Formula One . So before you flame me for WTF... i have a bachelors in mechanical engineering and an associtates degree in electrical engineering... i'm not worried about making it happen. All i wanna know is your opinion on it???
Now that everyone has gotten their awesome jokes out of the way, i will answer seriously from a more reasonable perspective. You want to drop a straight 6 twin turbo into a 4500lb+ vehicle that will rev to 10000rpm because it has the capability of putting down 850hp to the crank. At a 20% drivetrain loss, that would net you +-680. Your streetability is going to be trash. Overall performance will be mediocre. Dont expect the best track times. On top of this, you may have reached the limit of performance with 30 psi. As for cost, you will not only need to get the engine, but the transmission, transfercase and a compatible driveshaft. Who is gonna do all the computer work? What happens if a part breaks, are you gonna run to autozone and pick one up? What if your transmission needs to be rebuilt, are there local ppl dedicated to these motors and transmissions?

On to what you have in your truck. Its a 6.0L single turbo. If you can dyno tune it for a few hours with a respectable tuner, you can achieve 30 psi and around 700hp to the wheels without affecting street manners and close to the same amount of torque. What does a few hours doing a dyno tune cost, about a 100 an hour give or take?

As a mechanical engineer, you should have already considered these factors. Feel free to do the swap. At least you'll go on record as being the first .