The Nissan 370Z / G37 (VQ37VHR) is rated 332 hp (SAE net (secondary listing) · US market) at 7,000 rpm and weighs 3,232 lb (US base curb, MY2009 (secondary)), or 9.7 lb/hp. On enthusiast estimates its stock internals are taken to about ~520–750 hp, the fuel system to around ~390 hp, and its naturally aspirated setup is taken to about ~380 hp before forced induction. Below: the sourced spec sheet, the limit sheet carbuildcheck analyzes against, and the platform's community-documented weak points.
Units
01 Spec sheet sourced
EngineVQ37VHR · 3,696 cc · V6
Engine codeVQ37VHR
Bore × stroke95.5 × 86 mm
Compression11:1
Inductionnaturally aspirated (VVEL)
Fuel systemport
Rated power332 hp · SAE net (secondary listing) · US market @ 7,000 rpm
Torque270 lb-ft @ 5,200 rpm
Redline7,500 rpm
Transmission6MT · 7AT
DrivetrainRWD
Curb weight3,232 lb · US base curb, MY2009 (secondary) · 9.7 lb/hp
GenerationZ34 (2009–2020); NISMO rated 350 hp · 2009–2020 (332 hp throughout; base curb 3,232 lb in 2009, 3,333 lb by 2020)
rotating assembly ceiling · fails first: rotating assembly past ~650 whp (t1) · 93 AKI · source: Drifted, VQ37VHR engine guide · 650 whp (t1) is roughly 750 crank; the site plans on ~520 hp, conservative on a 7,500 rpm NA engine
Induction ceiling~380 hp
naturally aspirated ceiling (bolt-ons and cam) · fails first: NA ceiling: intakes, exhaust, tune · 93 AKI · no named source: site planning estimate · site planning figure ~380 hp
Fuel system~390 hp
stock fuel-system ceiling · fails first: fuel starvation in corners (Drifted recommends a surge tank), injectors on boost · 93 AKI · source: Drifted, VQ37VHR engine guide · site plans on ~390 hp
Clutch (manual)~360 hp
stock clutch torque capacity · fails first: stock clutch and the CSC slave cylinder · no named source: site planning estimate · site planning figure; no named source in this audit
Transmission (automatic)~420 hp
gearbox / driveline rating · fails first: 7AT at torque · no named source: site planning estimate · site planning figure; no named source in this audit
Cooling (sustained)~370 hp
thermal ceiling for sustained load · fails first: oil temperature derate on track · no named source: site planning estimate · site planning figure; no named source in this audit
Tuning limitsenthusiast estimates, crank hp on the stated fuel; sources: Drifted, VQ37VHR engine guide; method: the analyzer plans on the lower bound of each range
⚑The 370Z's oil-temp derate on track is community-famous; an oil cooler is the first mod, before anything that adds power.
⚑The clutch slave cylinder (CSC) is the known weak point (community consensus); upgrade to an external unit with any clutch job.
04 The typical path
Intake → headers → tune → cams or forced induction. NA gains are modest on most platforms; the big unlock is boost, and boost starts at the fuel system.
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