Thread: Injector sizing
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Old 11-21-2017, 09:28 AM   #1
PolarBear
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Injector sizing

I will be in need of some injectors for my LS1 I am working on building.
Will be stock displacement LS1, compression will be slightly higher than stock, maybe around 11:1? CNC ported 243 heads, valve job, BTR stage 3 cam (can get the specs), LS6 intake, 1-7/8" longtube headers, 3" dual exhaust. I am guessing I will be well under 500 horse at the crank, but this is really my first time building an engine, so I don't know what to expect and don't know where to spec the injectors. The one vendor I have talked to sells Bosch III's and thinks I will need about a 36lb injector at stock pressures. Does that sound like it's in the ballpark?
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