Injector limits
05-03-2010, 07:16 PM
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Car: 87 GTA t-top
Engine: L98 350 w/RMT
Transmission: 700R4
Axle/Gears: 9 bolt BW 3.45
Injector limits
Anyone know what peak HP injectors are around the 80% duty cycle on 22 24 26 lb injectors?
05-04-2010, 11:50 AM
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Car: 87 GTA t-top
Engine: L98 350 w/RMT
Transmission: 700R4
Axle/Gears: 9 bolt BW 3.45
Re: Injector limits
Would 26lb injectors run too rich on a stock 350?
Bottom line is Im thinkning of adding a turbo at 4 psi.
Im reading about other setups running on 24lb injectors upto 6psi claiming to get 400 rwhp.
Im not expecting to reach 400hp but around the 330 would be nice.
I have to add, your bird looks amazing, lots of work lots of love. The gauges man, I love it.
Bottom line is Im thinkning of adding a turbo at 4 psi.
Im reading about other setups running on 24lb injectors upto 6psi claiming to get 400 rwhp.
Im not expecting to reach 400hp but around the 330 would be nice.
I have to add, your bird looks amazing, lots of work lots of love. The gauges man, I love it.
Last edited by transamice; 05-04-2010 at 11:58 AM.
05-04-2010, 02:15 PM
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Car: 1991 Trans Am GTA, 2003 Grand Am GT
Engine: 350 Tune Port
Transmission: 700R4
Re: Injector limits
They will be fine but you will have to get a custom chip burned.
05-04-2010, 09:56 PM
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Car: 85 vette
Engine: 427 SHP block,AFR 210,MiniRam
Transmission: TKO 600
Axle/Gears: 3:07
Re: Injector limits
When you run the injector calculator program you will notice that you have to change the brake specific fuel consumption from .5 to .6 for a turbo engine, thus requiring a larger injector.
The 80 % number is for helping select an initial injector size by giving you a little leeway, not a hard number you must hit for proper operation. Guys making 400 wheel horsepower on 24 lb injectors are probably running near a 100 % duty cycle,at a higher than 43 psi base fuel pressure.
If you can make a fairly accurate prediction of your crankshaft horsepower the calculator will get you close enough and tuning will get you the rest of the way.
The 80 % number is for helping select an initial injector size by giving you a little leeway, not a hard number you must hit for proper operation. Guys making 400 wheel horsepower on 24 lb injectors are probably running near a 100 % duty cycle,at a higher than 43 psi base fuel pressure.
If you can make a fairly accurate prediction of your crankshaft horsepower the calculator will get you close enough and tuning will get you the rest of the way.
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