Limit Of Stock 19# Injectors With Tune????
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From: Northeast CT
Car: '89 IROC-Z
Engine: LSx
Transmission: T-56
Axle/Gears: 3.42
Limit Of Stock 19# Injectors With Tune????
Hey guys, I'm swapping my 305 for a 355, I just got the motor and I'm short on cash right now, I'm swapping over the TPI from the 305. I already have a custom tuned chip that is reflashable. If I have it tuned for the 355 and bigger cam (its something like 480/500 with the 1.6's), how much can I get out of them? As soon as I find a good deal on some used 24# injectors I will swap. But until then I have to use what I got. Any input is appreciated. Thanks.
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From: MA
Car: '87 IROC/'68 SS
Engine: 5.7L/350
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Re: Limit Of Stock 19# Injectors With Tune????
Until a log show 100% duty cycle at WOT. You can always bump the fuel pressure a bit if you have an adjustable regulator.
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Re: Limit Of Stock 19# Injectors With Tune????
Hey guys, I'm swapping my 305 for a 355, I just got the motor and I'm short on cash right now, I'm swapping over the TPI from the 305. I already have a custom tuned chip that is reflashable. If I have it tuned for the 355 and bigger cam (its something like 480/500 with the 1.6's), how much can I get out of them? As soon as I find a good deal on some used 24# injectors I will swap. But until then I have to use what I got. Any input is appreciated. Thanks.
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From: Hurst, Texas
Car: 1983 G20 Chevy
Engine: 305 TPI
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Axle/Gears: 14 bolt with 3.07 gears
Re: Limit Of Stock 19# Injectors With Tune????
100% duty cycle is pretty excessive. Go more along the lines of 85% to keep from destroying things. At 85% duty cycle, stock fuel pressure, and a .5 BSFC, you can feed 260 HP. At 100% duty cycle it is capable of about 305 HP.
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