Product Summary

Throttle Body Injection Style, 625 CFM CFM

  • Matte black sheet metal intake manifold provides modern aggressive styling and optimized port fuel distribution for small block Chevy engines
  • Self-tuning ECU with remote mounting automatically optimizes fuel maps, ignition timing, and power adder supportno laptop required
  • Go Fuel returnless in-tank 340 LPH fuel pump module with integrated 58 PSI regulator delivers consistent high-pressure fuel and universal fit for most EFI-ready tanks
  • Supports up to 650 horsepower with smooth idle, sharp acceleration, improved fuel efficiency, and compatibility for forced induction setups
  • Complete master kit includes ECM, high-flow injectors, throttle body, sensors, pre-terminated harness, fuel components, hardware, and all parts for straightforward bolt-on SBC conversions
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Key Specs

MFG. Part #36331
Injection StyleThrottle Body
Injector Size4-80 lb/hr
Max Horsepower Rating600
ECM IncludedYes
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FiTech 36331 Details

The FiTech 36331 Ultra Ram 650 HP Chevy Small Block EFI System is a premium master kit built for converting carbureted small block Chevy engines to modern self-learning EFI. It features a sleek matte black sheet metal intake manifold, remote-mounted ECU, and a Go Fuel returnless in-tank fuel pump module (340 LPH, adjustable 7-16 inch depth, built-in 58 PSI / 4-bar regulator)offering effortless plug-and-play installation, automatic fuel and timing optimization, on-the-fly air/fuel and ignition adjustments, crisp throttle response, smooth idle, enhanced drivability, and reliable performance up to 650 horsepower for street, performance, boosted, or custom SBC applications.

  • Matte black sheet metal intake manifold provides modern aggressive styling and optimized port fuel distribution for small block Chevy engines
  • Self-tuning ECU with remote mounting automatically optimizes fuel maps, ignition timing, and power adder supportno laptop required
  • Go Fuel returnless in-tank 340 LPH fuel pump module with integrated 58 PSI regulator delivers consistent high-pressure fuel and universal fit for most EFI-ready tanks
  • Supports up to 650 horsepower with smooth idle, sharp acceleration, improved fuel efficiency, and compatibility for forced induction setups
  • Complete master kit includes ECM, high-flow injectors, throttle body, sensors, pre-terminated harness, fuel components, hardware, and all parts for straightforward bolt-on SBC conversions

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

FiTech 36331 Specifications

KEY SPECS
MFG. Part #36331
BrandFiTech
Injection StyleThrottle Body
Injector Size4-80 lb/hr
Max Horsepower Rating600
ECM IncludedYes
GENERAL
Fuel Injection System TypeThrottle Body Injection (TBI)
CFM625 CFM
Injectors IncludedYes
Intake Manifold IncludedNo
Fuel Rails IncludedYes
Wiring Harness IncludedYes
MAP Sensor IncludedYes
Sold in QuantityKit

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