Stock Block VHR limit.

Originally Posted by derek_370z

For all my F.I. folks, I plan on getting my 370z boosted this summer. I've been seeing a lot of videos on YouTube in which some 370z's are touching between 600-700whp on the stock block. My main concern is how reliable my block will be running the numbers I have planned short-term before building the motor down the road. My mods for this build are as follows:

BP Turbo kit (COMP 6467 Turbo)
CJM S1.SE Fuel Return System
IDX 1300CC injectors
AEM 340 lph Fuel Pump
Tomei Catback Exhaust
Zspeed Stage 3 clutch w/ lightweight flywheel

I intend to run 10.5 psi off wastegate spring and E85. My goal is to be in the 500-550whp and 450-520tq. range. I'm sure this will be easily obtainable with the help of my tuner. I feel this is a conservative power goal. The kicker is my engine is at 138k miles (mainly highway) and will slightly increase as I recently just bought a new daily. I have not done a compression test, although, I do feel the motor is still fairly healthy. I need opinions and feedback on if my motor will be fairly reliable for the time being until I do an engine rebuild down the road. Any feedback is welcomed, negative or positive. Thanks!