Fuel Injector Sizing Calculator

Calculate required injector flow rate for your engine.

HP
80% is recommended for reliable operation

Common Injector Sizes

Size (lb/hr)Size (cc/min)Typical Use
19 lb/hr200 ccStock NA 4-cyl
24 lb/hr250 ccStock V6
36 lb/hr380 ccStock V8
42 lb/hr440 ccMild build
60 lb/hr630 ccModerate turbo
80 lb/hr840 ccHigh power
120 lb/hr1260 ccRace/E85