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!

Originally Posted by Netguru3278

Everything you have listed except for the fuel pump and the Exhaust is almost exactly just like my build except I have FI Exhaust and a twin pump CJM Assembly and a new 2020Z mine made 565@11psi Tuned @Dynosty Daily Driver for me pump gas only for now.

Originally Posted by cgr406

How was your experience @ Dynosty? I'm considering having them tune my TopGunZ Rotrex kit once I get it installed. I'm stock block, 93 octane. Similar to your build, other than the boost source.

Originally Posted by Spooler

Dynosty is good.

Originally Posted by cgr406

Thanks Spooler. I know you've had a good bit of work done @ MA. I'm in Pittsburgh & MA is actually a bit closer to me. I'm trying to decide between those two, and possibly also R/T Tuning in Philly.

Originally Posted by cgr406

Thanks Spooler. I know you've had a good bit of work done @ MA. I'm in Pittsburgh & MA is actually a bit closer to me. I'm trying to decide between those two, and possibly also R/T Tuning in Philly.

Originally Posted by JVerge5363

I had my TopgunZ kit installed and tuned by Vince at RT Tuning which produced 543whp and 426tq. RT Tuning also did my clutch upgrade, fuel return system and custom gauges in the original pods. I will be upgrading to the new Rotrex kit, installing an oil cooler and RT Tuning will be doing the installs and tune again.

Originally Posted by cgr406

Nice. Was that on 93 octane?

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